/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:59:48,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:59:48,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:59:48,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:59:48,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:59:48,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:59:48,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:59:48,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:59:48,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:59:48,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:59:48,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:59:48,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:59:48,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:59:48,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:59:48,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:59:48,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:59:48,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:59:48,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:59:48,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:59:48,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:59:48,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:59:48,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:59:48,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:59:48,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:59:48,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:59:48,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:59:48,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:59:48,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:59:48,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:59:48,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:59:48,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:59:48,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:59:48,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:59:48,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:59:48,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:59:48,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:59:48,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:59:48,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:59:48,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:59:48,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:59:48,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:59:48,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:59:48,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:59:48,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:59:48,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:59:48,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:59:48,925 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:59:48,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:59:48,925 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:59:48,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:59:48,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:59:48,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:59:48,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:59:48,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:59:48,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:59:48,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:59:48,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:59:48,927 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:59:48,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:59:48,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:59:48,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:59:48,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:59:48,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:59:48,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:59:48,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:59:48,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:59:48,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:59:48,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:59:48,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:59:48,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:59:48,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:59:48,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:59:49,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:59:49,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:59:49,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:59:49,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:59:49,222 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:59:49,223 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_11.cil.c [2020-10-12 20:59:49,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a8ea7fdc/eacea04072ab4da6a2c587f1ed186b60/FLAGac4ffcdc2 [2020-10-12 20:59:49,778 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:59:49,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_11.cil.c [2020-10-12 20:59:49,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a8ea7fdc/eacea04072ab4da6a2c587f1ed186b60/FLAGac4ffcdc2 [2020-10-12 20:59:50,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a8ea7fdc/eacea04072ab4da6a2c587f1ed186b60 [2020-10-12 20:59:50,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:59:50,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:59:50,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:59:50,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:59:50,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:59:50,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:59:50" (1/1) ... [2020-10-12 20:59:50,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e93eba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50, skipping insertion in model container [2020-10-12 20:59:50,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:59:50" (1/1) ... [2020-10-12 20:59:50,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:59:50,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:59:50,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:59:50,521 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:59:50,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:59:50,694 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:59:50,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50 WrapperNode [2020-10-12 20:59:50,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:59:50,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:59:50,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:59:50,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:59:50,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50" (1/1) ... [2020-10-12 20:59:50,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50" (1/1) ... [2020-10-12 20:59:50,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50" (1/1) ... [2020-10-12 20:59:50,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50" (1/1) ... [2020-10-12 20:59:50,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50" (1/1) ... [2020-10-12 20:59:50,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50" (1/1) ... [2020-10-12 20:59:50,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50" (1/1) ... [2020-10-12 20:59:50,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:59:50,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:59:50,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:59:50,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:59:50,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:59:50,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:59:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:59:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:59:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:59:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:59:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:59:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:59:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:59:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:59:51,035 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:59:51,604 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-12 20:59:51,605 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-12 20:59:51,617 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:59:51,617 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:59:51,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:59:51 BoogieIcfgContainer [2020-10-12 20:59:51,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:59:51,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:59:51,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:59:51,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:59:51,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:59:50" (1/3) ... [2020-10-12 20:59:51,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77292134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:59:51, skipping insertion in model container [2020-10-12 20:59:51,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:59:50" (2/3) ... [2020-10-12 20:59:51,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77292134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:59:51, skipping insertion in model container [2020-10-12 20:59:51,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:59:51" (3/3) ... [2020-10-12 20:59:51,633 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_11.cil.c [2020-10-12 20:59:51,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:59:51,653 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:59:51,669 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:59:51,697 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:59:51,697 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:59:51,698 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:59:51,698 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:59:51,698 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:59:51,698 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:59:51,699 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:59:51,699 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:59:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-12 20:59:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 20:59:51,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:51,734 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] [2020-10-12 20:59:51,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:51,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:51,741 INFO L82 PathProgramCache]: Analyzing trace with hash -904015367, now seen corresponding path program 1 times [2020-10-12 20:59:51,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:51,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931234199] [2020-10-12 20:59:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:52,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:52,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:53,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:53,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 20:59:53,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:53,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1410 [2020-10-12 20:59:53,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:59:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 20:59:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:59:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:59:53,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:53,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:53,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 20:59:53,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:53,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:59:53,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931234199] [2020-10-12 20:59:53,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:53,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:59:53,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906935366] [2020-10-12 20:59:53,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:59:53,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:53,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:59:53,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:59:53,444 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 6 states. [2020-10-12 20:59:53,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:53,784 INFO L93 Difference]: Finished difference Result 356 states and 603 transitions. [2020-10-12 20:59:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:59:53,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-12 20:59:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:53,800 INFO L225 Difference]: With dead ends: 356 [2020-10-12 20:59:53,801 INFO L226 Difference]: Without dead ends: 181 [2020-10-12 20:59:53,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:59:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-12 20:59:53,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 172. [2020-10-12 20:59:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-12 20:59:53,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 260 transitions. [2020-10-12 20:59:53,902 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 260 transitions. Word has length 31 [2020-10-12 20:59:53,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:53,904 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 260 transitions. [2020-10-12 20:59:53,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:59:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 260 transitions. [2020-10-12 20:59:53,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 20:59:53,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:53,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:53,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:59:53,908 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:53,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:53,909 INFO L82 PathProgramCache]: Analyzing trace with hash 182741697, now seen corresponding path program 1 times [2020-10-12 20:59:53,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:53,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627368172] [2020-10-12 20:59:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:53,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:53,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:54,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:54,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:54,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:54,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 20:59:54,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:54,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-12 20:59:54,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:54,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:54,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 20:59:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:59:54,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:54,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:54,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 20:59:54,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:54,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:54,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:59:54,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627368172] [2020-10-12 20:59:54,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:54,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-12 20:59:54,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957338114] [2020-10-12 20:59:54,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:59:54,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:54,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:59:54,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:54,547 INFO L87 Difference]: Start difference. First operand 172 states and 260 transitions. Second operand 4 states. [2020-10-12 20:59:54,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:54,813 INFO L93 Difference]: Finished difference Result 468 states and 718 transitions. [2020-10-12 20:59:54,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:54,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-12 20:59:54,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:54,817 INFO L225 Difference]: With dead ends: 468 [2020-10-12 20:59:54,817 INFO L226 Difference]: Without dead ends: 297 [2020-10-12 20:59:54,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-12 20:59:54,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 259. [2020-10-12 20:59:54,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-12 20:59:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 386 transitions. [2020-10-12 20:59:54,837 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 386 transitions. Word has length 48 [2020-10-12 20:59:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:54,838 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 386 transitions. [2020-10-12 20:59:54,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:59:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 386 transitions. [2020-10-12 20:59:54,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:59:54,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:54,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:54,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:59:54,843 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:54,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:54,843 INFO L82 PathProgramCache]: Analyzing trace with hash 640996698, now seen corresponding path program 1 times [2020-10-12 20:59:54,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:54,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238222044] [2020-10-12 20:59:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:55,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:55,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:59:55,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-12 20:59:55,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:59:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:59:55,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:55,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:55,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:55,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 20:59:55,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:55,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:55,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 20:59:55,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238222044] [2020-10-12 20:59:55,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:55,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:59:55,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149058045] [2020-10-12 20:59:55,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:59:55,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:55,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:59:55,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:55,730 INFO L87 Difference]: Start difference. First operand 259 states and 386 transitions. Second operand 4 states. [2020-10-12 20:59:55,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:55,931 INFO L93 Difference]: Finished difference Result 601 states and 901 transitions. [2020-10-12 20:59:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:55,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-12 20:59:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:55,935 INFO L225 Difference]: With dead ends: 601 [2020-10-12 20:59:55,935 INFO L226 Difference]: Without dead ends: 355 [2020-10-12 20:59:55,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:55,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-12 20:59:55,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 256. [2020-10-12 20:59:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-12 20:59:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 388 transitions. [2020-10-12 20:59:55,952 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 388 transitions. Word has length 79 [2020-10-12 20:59:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:55,953 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 388 transitions. [2020-10-12 20:59:55,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:59:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 388 transitions. [2020-10-12 20:59:55,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:59:55,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:55,957 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:59:55,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:59:55,958 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:55,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1074364742, now seen corresponding path program 1 times [2020-10-12 20:59:55,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:55,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462836026] [2020-10-12 20:59:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:56,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:59:56,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-12 20:59:56,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 20:59:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:59:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:56,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:56,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:56,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 20:59:56,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:56,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:56,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:56,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:56,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462836026] [2020-10-12 20:59:56,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:56,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-12 20:59:56,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251235795] [2020-10-12 20:59:56,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:59:56,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:56,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:59:56,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:56,462 INFO L87 Difference]: Start difference. First operand 256 states and 388 transitions. Second operand 4 states. [2020-10-12 20:59:56,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:56,706 INFO L93 Difference]: Finished difference Result 655 states and 996 transitions. [2020-10-12 20:59:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:56,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-12 20:59:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:56,709 INFO L225 Difference]: With dead ends: 655 [2020-10-12 20:59:56,709 INFO L226 Difference]: Without dead ends: 373 [2020-10-12 20:59:56,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:56,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-12 20:59:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 350. [2020-10-12 20:59:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-12 20:59:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 517 transitions. [2020-10-12 20:59:56,726 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 517 transitions. Word has length 79 [2020-10-12 20:59:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:56,727 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 517 transitions. [2020-10-12 20:59:56,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:59:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 517 transitions. [2020-10-12 20:59:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:59:56,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:56,731 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:59:56,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:59:56,731 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:56,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1169618556, now seen corresponding path program 1 times [2020-10-12 20:59:56,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:56,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957647222] [2020-10-12 20:59:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:56,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:59:57,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:59:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-12 20:59:57,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:59:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:59:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:57,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:57,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 20:59:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 20:59:57,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:57,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 20:59:57,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957647222] [2020-10-12 20:59:57,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:57,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:59:57,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440725232] [2020-10-12 20:59:57,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:59:57,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:57,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:59:57,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:57,068 INFO L87 Difference]: Start difference. First operand 350 states and 517 transitions. Second operand 4 states. [2020-10-12 20:59:57,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:57,262 INFO L93 Difference]: Finished difference Result 775 states and 1140 transitions. [2020-10-12 20:59:57,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:57,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-12 20:59:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:57,266 INFO L225 Difference]: With dead ends: 775 [2020-10-12 20:59:57,267 INFO L226 Difference]: Without dead ends: 438 [2020-10-12 20:59:57,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-12 20:59:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 347. [2020-10-12 20:59:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-12 20:59:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 512 transitions. [2020-10-12 20:59:57,285 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 512 transitions. Word has length 79 [2020-10-12 20:59:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:57,286 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 512 transitions. [2020-10-12 20:59:57,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:59:57,286 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 512 transitions. [2020-10-12 20:59:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:59:57,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:57,288 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:59:57,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:59:57,288 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:57,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:57,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1343821720, now seen corresponding path program 1 times [2020-10-12 20:59:57,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:57,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020885720] [2020-10-12 20:59:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:57,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:59:57,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:57,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-12 20:59:57,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:59:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:59:57,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:57,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:57,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:57,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 20:59:57,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:57,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:57,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:57,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:57,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:57,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:57,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 20:59:57,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020885720] [2020-10-12 20:59:57,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:57,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:59:57,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368778913] [2020-10-12 20:59:57,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:59:57,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:57,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:59:57,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:57,803 INFO L87 Difference]: Start difference. First operand 347 states and 512 transitions. Second operand 4 states. [2020-10-12 20:59:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:58,001 INFO L93 Difference]: Finished difference Result 752 states and 1101 transitions. [2020-10-12 20:59:58,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:58,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-12 20:59:58,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:58,005 INFO L225 Difference]: With dead ends: 752 [2020-10-12 20:59:58,005 INFO L226 Difference]: Without dead ends: 418 [2020-10-12 20:59:58,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:58,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-12 20:59:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 343. [2020-10-12 20:59:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-12 20:59:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 507 transitions. [2020-10-12 20:59:58,022 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 507 transitions. Word has length 80 [2020-10-12 20:59:58,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:58,023 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 507 transitions. [2020-10-12 20:59:58,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:59:58,023 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 507 transitions. [2020-10-12 20:59:58,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 20:59:58,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:58,025 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:59:58,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:59:58,025 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:58,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:58,026 INFO L82 PathProgramCache]: Analyzing trace with hash -537480486, now seen corresponding path program 1 times [2020-10-12 20:59:58,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:58,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792704575] [2020-10-12 20:59:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:58,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 20:59:58,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:59:58,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-12 20:59:58,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 20:59:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:59:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:59:58,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:58,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:58,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 20:59:58,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:58,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:58,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:58,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:58,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:58,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:58,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:59:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:58,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792704575] [2020-10-12 20:59:58,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:59:58,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-12 20:59:58,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370363031] [2020-10-12 20:59:58,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:59:58,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:58,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:59:58,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:58,530 INFO L87 Difference]: Start difference. First operand 343 states and 507 transitions. Second operand 4 states. [2020-10-12 20:59:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:58,770 INFO L93 Difference]: Finished difference Result 865 states and 1278 transitions. [2020-10-12 20:59:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:58,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-12 20:59:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:58,774 INFO L225 Difference]: With dead ends: 865 [2020-10-12 20:59:58,774 INFO L226 Difference]: Without dead ends: 485 [2020-10-12 20:59:58,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-10-12 20:59:58,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 399. [2020-10-12 20:59:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-12 20:59:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 594 transitions. [2020-10-12 20:59:58,791 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 594 transitions. Word has length 81 [2020-10-12 20:59:58,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:58,792 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 594 transitions. [2020-10-12 20:59:58,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:59:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 594 transitions. [2020-10-12 20:59:58,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:59:58,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:58,793 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:59:58,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:59:58,794 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1688403595, now seen corresponding path program 1 times [2020-10-12 20:59:58,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:58,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308511443] [2020-10-12 20:59:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:58,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:59:58,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:59:58,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 20:59:58,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:58,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:59:58,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 20:59:58,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:59:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:58,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:58,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:58,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 20:59:58,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:58,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 20:59:58,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:58,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:59:58,991 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:59:58,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308511443] [2020-10-12 20:59:58,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:58,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 20:59:58,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564745104] [2020-10-12 20:59:58,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 20:59:58,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:58,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 20:59:58,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 20:59:58,994 INFO L87 Difference]: Start difference. First operand 399 states and 594 transitions. Second operand 3 states. [2020-10-12 20:59:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:59,159 INFO L93 Difference]: Finished difference Result 842 states and 1245 transitions. [2020-10-12 20:59:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 20:59:59,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-10-12 20:59:59,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:59,162 INFO L225 Difference]: With dead ends: 842 [2020-10-12 20:59:59,163 INFO L226 Difference]: Without dead ends: 456 [2020-10-12 20:59:59,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 20:59:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-10-12 20:59:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 448. [2020-10-12 20:59:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-12 20:59:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 654 transitions. [2020-10-12 20:59:59,180 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 654 transitions. Word has length 88 [2020-10-12 20:59:59,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:59,181 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 654 transitions. [2020-10-12 20:59:59,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 20:59:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 654 transitions. [2020-10-12 20:59:59,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:59:59,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:59,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:59,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:59:59,183 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:59,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:59,184 INFO L82 PathProgramCache]: Analyzing trace with hash -464250284, now seen corresponding path program 1 times [2020-10-12 20:59:59,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:59,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134859290] [2020-10-12 20:59:59,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:59,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:59:59,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:59:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-12 20:59:59,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:59:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-12 20:59:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:59:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:59:59,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:59:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:59,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:59:59,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 20:59:59,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:59:59,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:59:59,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:59:59,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:59:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:59:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:59:59,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:59:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 20:59:59,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134859290] [2020-10-12 20:59:59,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:59:59,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:59:59,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72366313] [2020-10-12 20:59:59,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:59:59,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:59:59,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:59:59,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:59:59,653 INFO L87 Difference]: Start difference. First operand 448 states and 654 transitions. Second operand 4 states. [2020-10-12 20:59:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:59:59,851 INFO L93 Difference]: Finished difference Result 964 states and 1396 transitions. [2020-10-12 20:59:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:59:59,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-12 20:59:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:59:59,856 INFO L225 Difference]: With dead ends: 964 [2020-10-12 20:59:59,856 INFO L226 Difference]: Without dead ends: 529 [2020-10-12 20:59:59,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:59:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-12 20:59:59,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 456. [2020-10-12 20:59:59,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-12 20:59:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 667 transitions. [2020-10-12 20:59:59,881 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 667 transitions. Word has length 88 [2020-10-12 20:59:59,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:59:59,882 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 667 transitions. [2020-10-12 20:59:59,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:59:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 667 transitions. [2020-10-12 20:59:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:59:59,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:59:59,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:59:59,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:59:59,885 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:59:59,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:59:59,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1024429452, now seen corresponding path program 1 times [2020-10-12 20:59:59,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:59:59,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102172702] [2020-10-12 20:59:59,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:59:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:59:59,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:59:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:00,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 21:00:00,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:00:00,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-12 21:00:00,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:00,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:00,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-12 21:00:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 21:00:00,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:00:00,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:00,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:00,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:00,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:00,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:00:00,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 21:00:00,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102172702] [2020-10-12 21:00:00,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:00,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 21:00:00,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118204257] [2020-10-12 21:00:00,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 21:00:00,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:00,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 21:00:00,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 21:00:00,395 INFO L87 Difference]: Start difference. First operand 456 states and 667 transitions. Second operand 4 states. [2020-10-12 21:00:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:00,628 INFO L93 Difference]: Finished difference Result 978 states and 1420 transitions. [2020-10-12 21:00:00,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:00,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-12 21:00:00,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:00,632 INFO L225 Difference]: With dead ends: 978 [2020-10-12 21:00:00,632 INFO L226 Difference]: Without dead ends: 535 [2020-10-12 21:00:00,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-12 21:00:00,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 448. [2020-10-12 21:00:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-12 21:00:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 654 transitions. [2020-10-12 21:00:00,650 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 654 transitions. Word has length 89 [2020-10-12 21:00:00,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:00,651 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 654 transitions. [2020-10-12 21:00:00,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 21:00:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 654 transitions. [2020-10-12 21:00:00,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 21:00:00,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:00,653 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:00,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 21:00:00,653 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:00,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:00,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1228929597, now seen corresponding path program 1 times [2020-10-12 21:00:00,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:00,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071698463] [2020-10-12 21:00:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:00,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 21:00:00,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:00:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 21:00:00,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 21:00:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 21:00:00,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:00,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:00,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:00,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:00,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:00,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:00:00,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:00,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:00:00,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071698463] [2020-10-12 21:00:00,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:00,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:00,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396663121] [2020-10-12 21:00:00,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:00,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:00,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:00,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:00,815 INFO L87 Difference]: Start difference. First operand 448 states and 654 transitions. Second operand 3 states. [2020-10-12 21:00:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:01,006 INFO L93 Difference]: Finished difference Result 969 states and 1428 transitions. [2020-10-12 21:00:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:01,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-10-12 21:00:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:01,009 INFO L225 Difference]: With dead ends: 969 [2020-10-12 21:00:01,010 INFO L226 Difference]: Without dead ends: 503 [2020-10-12 21:00:01,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-10-12 21:00:01,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 491. [2020-10-12 21:00:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-12 21:00:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 709 transitions. [2020-10-12 21:00:01,028 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 709 transitions. Word has length 95 [2020-10-12 21:00:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:01,028 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 709 transitions. [2020-10-12 21:00:01,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 709 transitions. [2020-10-12 21:00:01,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 21:00:01,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:01,030 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:01,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 21:00:01,031 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:01,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1778500353, now seen corresponding path program 1 times [2020-10-12 21:00:01,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:01,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285935112] [2020-10-12 21:00:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:01,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 21:00:01,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:00:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 21:00:01,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 21:00:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:00:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:01,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:01,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:01,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:01,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:00:01,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:01,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 21:00:01,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285935112] [2020-10-12 21:00:01,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:01,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:01,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595638192] [2020-10-12 21:00:01,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:01,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:01,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:01,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:01,218 INFO L87 Difference]: Start difference. First operand 491 states and 709 transitions. Second operand 3 states. [2020-10-12 21:00:01,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:01,472 INFO L93 Difference]: Finished difference Result 1063 states and 1541 transitions. [2020-10-12 21:00:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:01,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-10-12 21:00:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:01,476 INFO L225 Difference]: With dead ends: 1063 [2020-10-12 21:00:01,477 INFO L226 Difference]: Without dead ends: 567 [2020-10-12 21:00:01,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-10-12 21:00:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 517. [2020-10-12 21:00:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-10-12 21:00:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 744 transitions. [2020-10-12 21:00:01,506 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 744 transitions. Word has length 110 [2020-10-12 21:00:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:01,507 INFO L479 AbstractCegarLoop]: Abstraction has 517 states and 744 transitions. [2020-10-12 21:00:01,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:01,507 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 744 transitions. [2020-10-12 21:00:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 21:00:01,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:01,511 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:01,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 21:00:01,511 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:01,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:01,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2128346520, now seen corresponding path program 1 times [2020-10-12 21:00:01,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:01,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340090861] [2020-10-12 21:00:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:01,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:01,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 21:00:01,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:01,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 21:00:01,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 21:00:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 21:00:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:01,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:01,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:01,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:01,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:00:01,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:01,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 21:00:01,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340090861] [2020-10-12 21:00:01,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:01,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:01,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567189113] [2020-10-12 21:00:01,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:01,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:01,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:01,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:01,682 INFO L87 Difference]: Start difference. First operand 517 states and 744 transitions. Second operand 3 states. [2020-10-12 21:00:01,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:01,738 INFO L93 Difference]: Finished difference Result 1023 states and 1472 transitions. [2020-10-12 21:00:01,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:01,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-10-12 21:00:01,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:01,745 INFO L225 Difference]: With dead ends: 1023 [2020-10-12 21:00:01,745 INFO L226 Difference]: Without dead ends: 1021 [2020-10-12 21:00:01,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:01,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-12 21:00:01,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1019. [2020-10-12 21:00:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-10-12 21:00:01,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1468 transitions. [2020-10-12 21:00:01,803 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1468 transitions. Word has length 129 [2020-10-12 21:00:01,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:01,803 INFO L479 AbstractCegarLoop]: Abstraction has 1019 states and 1468 transitions. [2020-10-12 21:00:01,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:01,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1468 transitions. [2020-10-12 21:00:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 21:00:01,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:01,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:01,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 21:00:01,807 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:01,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:01,808 INFO L82 PathProgramCache]: Analyzing trace with hash -435999788, now seen corresponding path program 1 times [2020-10-12 21:00:01,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:01,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638084768] [2020-10-12 21:00:01,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:01,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 21:00:01,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:00:01,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 21:00:01,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:01,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:01,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 21:00:01,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 21:00:01,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:01,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:01,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:01,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:01,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:01,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:01,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:00:01,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:00:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-12 21:00:01,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638084768] [2020-10-12 21:00:01,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:01,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:01,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351020044] [2020-10-12 21:00:01,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:01,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:01,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:01,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:01,954 INFO L87 Difference]: Start difference. First operand 1019 states and 1468 transitions. Second operand 3 states. [2020-10-12 21:00:02,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:02,038 INFO L93 Difference]: Finished difference Result 2529 states and 3644 transitions. [2020-10-12 21:00:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:02,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-10-12 21:00:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:02,048 INFO L225 Difference]: With dead ends: 2529 [2020-10-12 21:00:02,049 INFO L226 Difference]: Without dead ends: 1523 [2020-10-12 21:00:02,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:02,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2020-10-12 21:00:02,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1521. [2020-10-12 21:00:02,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2020-10-12 21:00:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2187 transitions. [2020-10-12 21:00:02,154 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2187 transitions. Word has length 130 [2020-10-12 21:00:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:02,155 INFO L479 AbstractCegarLoop]: Abstraction has 1521 states and 2187 transitions. [2020-10-12 21:00:02,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:02,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2187 transitions. [2020-10-12 21:00:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 21:00:02,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:02,161 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:02,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 21:00:02,161 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:02,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:02,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1346655618, now seen corresponding path program 1 times [2020-10-12 21:00:02,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:02,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848735283] [2020-10-12 21:00:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:02,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 21:00:02,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:02,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-12 21:00:02,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-12 21:00:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 21:00:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:02,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:02,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:02,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:02,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:02,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:00:02,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:02,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:02,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:02,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:00:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 21:00:02,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848735283] [2020-10-12 21:00:02,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:00:02,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-12 21:00:02,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173862811] [2020-10-12 21:00:02,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 21:00:02,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:02,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 21:00:02,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 21:00:02,529 INFO L87 Difference]: Start difference. First operand 1521 states and 2187 transitions. Second operand 4 states. [2020-10-12 21:00:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:02,823 INFO L93 Difference]: Finished difference Result 3706 states and 5320 transitions. [2020-10-12 21:00:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:02,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-12 21:00:02,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:02,833 INFO L225 Difference]: With dead ends: 3706 [2020-10-12 21:00:02,833 INFO L226 Difference]: Without dead ends: 2045 [2020-10-12 21:00:02,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-12 21:00:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1641. [2020-10-12 21:00:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2020-10-12 21:00:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2370 transitions. [2020-10-12 21:00:02,910 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2370 transitions. Word has length 138 [2020-10-12 21:00:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:02,910 INFO L479 AbstractCegarLoop]: Abstraction has 1641 states and 2370 transitions. [2020-10-12 21:00:02,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 21:00:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2370 transitions. [2020-10-12 21:00:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 21:00:02,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:02,917 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:02,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 21:00:02,917 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:02,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:02,918 INFO L82 PathProgramCache]: Analyzing trace with hash -2047410870, now seen corresponding path program 1 times [2020-10-12 21:00:02,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:02,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172536544] [2020-10-12 21:00:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:02,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:02,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:03,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 21:00:03,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:00:03,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-12 21:00:03,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:03,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:03,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 21:00:03,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:00:03,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:03,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:03,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:03,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:03,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:03,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:00:03,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:03,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 21:00:03,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172536544] [2020-10-12 21:00:03,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:03,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:03,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993202375] [2020-10-12 21:00:03,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:03,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:03,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:03,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:03,222 INFO L87 Difference]: Start difference. First operand 1641 states and 2370 transitions. Second operand 3 states. [2020-10-12 21:00:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:03,336 INFO L93 Difference]: Finished difference Result 4699 states and 6779 transitions. [2020-10-12 21:00:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:03,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2020-10-12 21:00:03,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:03,351 INFO L225 Difference]: With dead ends: 4699 [2020-10-12 21:00:03,351 INFO L226 Difference]: Without dead ends: 3071 [2020-10-12 21:00:03,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2020-10-12 21:00:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 3054. [2020-10-12 21:00:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3054 states. [2020-10-12 21:00:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3054 states to 3054 states and 4387 transitions. [2020-10-12 21:00:03,478 INFO L78 Accepts]: Start accepts. Automaton has 3054 states and 4387 transitions. Word has length 152 [2020-10-12 21:00:03,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:03,478 INFO L479 AbstractCegarLoop]: Abstraction has 3054 states and 4387 transitions. [2020-10-12 21:00:03,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states and 4387 transitions. [2020-10-12 21:00:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 21:00:03,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:03,488 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:03,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 21:00:03,488 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:03,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:03,489 INFO L82 PathProgramCache]: Analyzing trace with hash 270390224, now seen corresponding path program 1 times [2020-10-12 21:00:03,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:03,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941956004] [2020-10-12 21:00:03,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:03,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 21:00:03,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:00:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-12 21:00:03,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:00:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-12 21:00:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 21:00:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:00:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:03,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:03,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:03,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:03,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:00:03,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:03,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:00:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-12 21:00:04,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941956004] [2020-10-12 21:00:04,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:00:04,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-12 21:00:04,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278721046] [2020-10-12 21:00:04,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 21:00:04,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:04,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 21:00:04,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 21:00:04,023 INFO L87 Difference]: Start difference. First operand 3054 states and 4387 transitions. Second operand 4 states. [2020-10-12 21:00:04,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:04,542 INFO L93 Difference]: Finished difference Result 7234 states and 10406 transitions. [2020-10-12 21:00:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:04,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-12 21:00:04,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:04,570 INFO L225 Difference]: With dead ends: 7234 [2020-10-12 21:00:04,571 INFO L226 Difference]: Without dead ends: 4004 [2020-10-12 21:00:04,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:04,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2020-10-12 21:00:04,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3204. [2020-10-12 21:00:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3204 states. [2020-10-12 21:00:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 4585 transitions. [2020-10-12 21:00:04,800 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 4585 transitions. Word has length 162 [2020-10-12 21:00:04,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:04,801 INFO L479 AbstractCegarLoop]: Abstraction has 3204 states and 4585 transitions. [2020-10-12 21:00:04,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 21:00:04,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 4585 transitions. [2020-10-12 21:00:04,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 21:00:04,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:04,811 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:04,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 21:00:04,812 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:04,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:04,812 INFO L82 PathProgramCache]: Analyzing trace with hash 191900591, now seen corresponding path program 1 times [2020-10-12 21:00:04,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:04,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862771900] [2020-10-12 21:00:04,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:04,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:04,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:05,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 21:00:05,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:00:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-10-12 21:00:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-12 21:00:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 21:00:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:05,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:05,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:05,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:05,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:05,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:00:05,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-12 21:00:05,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862771900] [2020-10-12 21:00:05,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:05,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:05,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111706347] [2020-10-12 21:00:05,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:05,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:05,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:05,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:05,654 INFO L87 Difference]: Start difference. First operand 3204 states and 4585 transitions. Second operand 3 states. [2020-10-12 21:00:05,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:05,736 INFO L93 Difference]: Finished difference Result 6055 states and 8668 transitions. [2020-10-12 21:00:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:05,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-10-12 21:00:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:05,755 INFO L225 Difference]: With dead ends: 6055 [2020-10-12 21:00:05,755 INFO L226 Difference]: Without dead ends: 2780 [2020-10-12 21:00:05,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2020-10-12 21:00:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2780. [2020-10-12 21:00:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2780 states. [2020-10-12 21:00:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3920 transitions. [2020-10-12 21:00:05,905 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3920 transitions. Word has length 173 [2020-10-12 21:00:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:05,906 INFO L479 AbstractCegarLoop]: Abstraction has 2780 states and 3920 transitions. [2020-10-12 21:00:05,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3920 transitions. [2020-10-12 21:00:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 21:00:05,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:05,913 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:05,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 21:00:05,913 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:05,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:05,913 INFO L82 PathProgramCache]: Analyzing trace with hash -589250252, now seen corresponding path program 1 times [2020-10-12 21:00:05,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:05,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789573901] [2020-10-12 21:00:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:05,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:06,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:06,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-12 21:00:06,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 21:00:06,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:00:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 21:00:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 21:00:06,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:06,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:06,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 21:00:06,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:06,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:00:06,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:06,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-12 21:00:06,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789573901] [2020-10-12 21:00:06,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:06,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 21:00:06,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620863668] [2020-10-12 21:00:06,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 21:00:06,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 21:00:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:06,295 INFO L87 Difference]: Start difference. First operand 2780 states and 3920 transitions. Second operand 3 states. [2020-10-12 21:00:06,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:06,443 INFO L93 Difference]: Finished difference Result 8265 states and 11642 transitions. [2020-10-12 21:00:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 21:00:06,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-10-12 21:00:06,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:06,473 INFO L225 Difference]: With dead ends: 8265 [2020-10-12 21:00:06,473 INFO L226 Difference]: Without dead ends: 5518 [2020-10-12 21:00:06,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 21:00:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2020-10-12 21:00:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5516. [2020-10-12 21:00:06,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5516 states. [2020-10-12 21:00:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 7757 transitions. [2020-10-12 21:00:06,736 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 7757 transitions. Word has length 196 [2020-10-12 21:00:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:06,736 INFO L479 AbstractCegarLoop]: Abstraction has 5516 states and 7757 transitions. [2020-10-12 21:00:06,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 21:00:06,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 7757 transitions. [2020-10-12 21:00:06,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-12 21:00:06,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:06,747 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:06,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 21:00:06,748 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:06,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:06,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2082079862, now seen corresponding path program 1 times [2020-10-12 21:00:06,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:06,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209938448] [2020-10-12 21:00:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 21:00:06,785 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 21:00:06,785 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 21:00:06,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 21:00:06,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:00:06 BoogieIcfgContainer [2020-10-12 21:00:06,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 21:00:06,827 INFO L168 Benchmark]: Toolchain (without parser) took 16667.04 ms. Allocated memory was 141.0 MB in the beginning and 551.6 MB in the end (delta: 410.5 MB). Free memory was 103.3 MB in the beginning and 322.7 MB in the end (delta: -219.4 MB). Peak memory consumption was 191.1 MB. Max. memory is 7.1 GB. [2020-10-12 21:00:06,828 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-12 21:00:06,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.79 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 179.0 MB in the end (delta: -76.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-10-12 21:00:06,829 INFO L168 Benchmark]: Boogie Preprocessor took 62.46 ms. Allocated memory is still 204.5 MB. Free memory was 179.0 MB in the beginning and 176.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-12 21:00:06,829 INFO L168 Benchmark]: RCFGBuilder took 864.37 ms. Allocated memory is still 204.5 MB. Free memory was 176.4 MB in the beginning and 123.5 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2020-10-12 21:00:06,830 INFO L168 Benchmark]: TraceAbstraction took 15199.63 ms. Allocated memory was 204.5 MB in the beginning and 551.6 MB in the end (delta: 347.1 MB). Free memory was 122.9 MB in the beginning and 322.7 MB in the end (delta: -199.8 MB). Peak memory consumption was 147.2 MB. Max. memory is 7.1 GB. [2020-10-12 21:00:06,833 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 535.79 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 179.0 MB in the end (delta: -76.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.46 ms. Allocated memory is still 204.5 MB. Free memory was 179.0 MB in the beginning and 176.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 864.37 ms. Allocated memory is still 204.5 MB. Free memory was 176.4 MB in the beginning and 123.5 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15199.63 ms. Allocated memory was 204.5 MB in the beginning and 551.6 MB in the end (delta: 347.1 MB). Free memory was 122.9 MB in the beginning and 322.7 MB in the end (delta: -199.8 MB). Peak memory consumption was 147.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L635] int s ; [L636] int tmp ; [L640] s = 8464 [L641] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int() ; [L21] int s__rwstate ; [L22] int s__init_buf___0 = 1; [L23] int s__debug = __VERIFIER_nondet_int() ; [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int() ; [L26] int s__options = __VERIFIER_nondet_int() ; [L27] int s__verify_mode = __VERIFIER_nondet_int() ; [L28] int s__session__peer = __VERIFIER_nondet_int() ; [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L30] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength ; [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 = __VERIFIER_nondet_long() ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 = __VERIFIER_nondet_int() ; [L60] long tmp___8 = __VERIFIER_nondet_long() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int tmp___10 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] unsigned long __cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 ; [L73] s__state = initial_state [L74] blastFlag = 0 [L75] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND TRUE s__info_callback != 0 [L82] cb = s__info_callback [L88] s__in_handshake ++ [L89] COND TRUE tmp___1 + 12288 [L90] COND TRUE tmp___2 + 16384 [L94] COND FALSE !(s__cert == 0) [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND TRUE s__state == 8464 [L271] s__shutdown = 0 [L272] ret = __VERIFIER_nondet_int() [L273] COND TRUE blastFlag == 0 [L274] blastFlag = 1 [L276] COND FALSE !(ret <= 0) [L279] got_new_session = 1 [L280] s__state = 8496 [L281] s__init_num = 0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND TRUE s__state == 8496 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 1 [L287] blastFlag = 2 [L293] COND FALSE !(ret <= 0) [L296] COND FALSE !(\read(s__hit)) [L299] s__state = 8512 [L301] s__init_num = 0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND TRUE s__state == 8512 [L306] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L307] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L308] COND TRUE __cil_tmp56 + 256UL [L309] skip = 1 [L317] s__state = 8528 [L318] s__init_num = 0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND TRUE s__state == 8528 [L322] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L323] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L325] __cil_tmp57 = (unsigned long )s__options [L326] COND TRUE __cil_tmp57 + 2097152UL [L327] s__s3__tmp__use_rsa_tmp = 1 [L332] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L359] ret = __VERIFIER_nondet_int() [L360] COND FALSE !(ret <= 0) [L377] s__state = 8544 [L378] s__init_num = 0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND TRUE s__state == 8544 [L382] COND TRUE s__verify_mode + 1 [L383] COND FALSE !(s__session__peer != 0) [L394] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L395] __cil_tmp61 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L396] COND FALSE !(__cil_tmp61 + 256UL) [L406] s__s3__tmp__cert_request = 1 [L407] ret = __VERIFIER_nondet_int() [L408] COND FALSE !(ret <= 0) [L411] s__state = 8448 [L412] s__s3__tmp__next_state___0 = 8576 [L413] s__init_num = 0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND TRUE s__state == 8448 [L434] COND FALSE !(num1 > 0L) [L443] s__state = s__s3__tmp__next_state___0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND TRUE s__state == 8576 [L447] ret = __VERIFIER_nondet_int() [L448] COND FALSE !(ret <= 0) [L451] COND FALSE !(ret == 2) [L454] ret = __VERIFIER_nondet_int() [L455] COND FALSE !(ret <= 0) [L458] s__init_num = 0 [L459] s__state = 8592 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND TRUE state == 8576 [L603] COND TRUE s__state == 8592 [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE tmp___2 != -16384 [L606] COND TRUE __cil_tmp56 != 4294967040 [L607] COND TRUE __cil_tmp58 != 4294967294 [L608] COND TRUE tmp___7 != 1024 [L609] COND TRUE tmp___7 != 512 [L630] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 157 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.0s, OverallIterations: 20, TraceHistogramMax: 7, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4120 SDtfs, 3562 SDslu, 4425 SDs, 0 SdLazy, 2143 SolverSat, 483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5516occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 1878 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 2224 NumberOfCodeBlocks, 2224 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2008 ConstructedInterpolants, 0 QuantifiedInterpolants, 477660 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 1875/1885 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...