/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:30:31,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:30:31,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:30:31,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:30:31,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:30:31,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:30:31,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:30:31,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:30:31,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:30:31,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:30:31,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:30:31,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:30:31,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:30:31,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:30:31,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:30:31,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:30:31,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:30:31,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:30:31,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:30:31,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:30:31,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:30:31,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:30:31,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:30:31,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:30:31,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:30:31,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:30:31,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:30:31,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:30:31,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:30:31,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:30:31,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:30:31,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:30:31,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:30:31,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:30:31,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:30:31,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:30:31,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:30:31,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:30:31,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:30:31,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:30:31,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:30:31,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:30:31,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:30:31,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:30:31,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:30:31,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:30:31,708 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:30:31,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:30:31,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:30:31,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:30:31,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:30:31,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:30:31,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:30:31,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:30:31,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:30:31,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:30:31,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:30:31,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:30:31,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:30:31,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:30:31,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:30:31,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:30:31,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:30:31,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:30:31,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:30:31,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:30:31,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:30:31,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:30:31,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:30:31,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:30:31,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:30:31,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:30:32,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:30:32,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:30:32,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:30:32,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:30:32,252 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:30:32,253 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 05:30:32,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b6cb1895/dc9a4b2928834b5889d8c25fa93ee0fe/FLAGeaaae177b [2020-09-25 05:30:32,956 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:30:32,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 05:30:32,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b6cb1895/dc9a4b2928834b5889d8c25fa93ee0fe/FLAGeaaae177b [2020-09-25 05:30:33,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b6cb1895/dc9a4b2928834b5889d8c25fa93ee0fe [2020-09-25 05:30:33,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:30:33,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:30:33,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:30:33,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:30:33,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:30:33,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:30:33" (1/1) ... [2020-09-25 05:30:33,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33, skipping insertion in model container [2020-09-25 05:30:33,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:30:33" (1/1) ... [2020-09-25 05:30:33,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:30:33,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:30:33,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:30:33,629 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:30:33,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:30:33,801 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:30:33,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33 WrapperNode [2020-09-25 05:30:33,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:30:33,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:30:33,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:30:33,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:30:33,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33" (1/1) ... [2020-09-25 05:30:33,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33" (1/1) ... [2020-09-25 05:30:33,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33" (1/1) ... [2020-09-25 05:30:33,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33" (1/1) ... [2020-09-25 05:30:33,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33" (1/1) ... [2020-09-25 05:30:33,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33" (1/1) ... [2020-09-25 05:30:33,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33" (1/1) ... [2020-09-25 05:30:33,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:30:33,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:30:33,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:30:33,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:30:33,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:30:33,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:30:33,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:30:33,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 05:30:33,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:30:33,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:30:33,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 05:30:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:30:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 05:30:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 05:30:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:30:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:30:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:30:34,242 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 05:30:35,000 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 05:30:35,000 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 05:30:35,018 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:30:35,019 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:30:35,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:30:35 BoogieIcfgContainer [2020-09-25 05:30:35,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:30:35,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:30:35,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:30:35,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:30:35,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:30:33" (1/3) ... [2020-09-25 05:30:35,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63746b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:30:35, skipping insertion in model container [2020-09-25 05:30:35,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:33" (2/3) ... [2020-09-25 05:30:35,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63746b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:30:35, skipping insertion in model container [2020-09-25 05:30:35,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:30:35" (3/3) ... [2020-09-25 05:30:35,039 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-09-25 05:30:35,051 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:30:35,063 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:30:35,086 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:30:35,122 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:30:35,123 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:30:35,123 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:30:35,123 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:30:35,123 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:30:35,123 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:30:35,123 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:30:35,124 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:30:35,155 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-09-25 05:30:35,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 05:30:35,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:35,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:35,176 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:35,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:35,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-09-25 05:30:35,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:35,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322730203] [2020-09-25 05:30:35,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:35,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:36,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:36,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 05:30:36,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:30:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1525 [2020-09-25 05:30:36,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:36,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 05:30:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:30:36,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 23 [2020-09-25 05:30:37,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:37,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:37,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:37,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:37,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:37,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:37,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:37,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:37,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:37,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322730203] [2020-09-25 05:30:37,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:37,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:37,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675613158] [2020-09-25 05:30:37,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:37,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:37,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:37,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:37,232 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 3 states. [2020-09-25 05:30:37,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:37,384 INFO L93 Difference]: Finished difference Result 979 states and 1295 transitions. [2020-09-25 05:30:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:37,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2020-09-25 05:30:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:37,431 INFO L225 Difference]: With dead ends: 979 [2020-09-25 05:30:37,431 INFO L226 Difference]: Without dead ends: 635 [2020-09-25 05:30:37,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:37,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-09-25 05:30:37,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2020-09-25 05:30:37,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-09-25 05:30:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 782 transitions. [2020-09-25 05:30:37,565 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 782 transitions. Word has length 158 [2020-09-25 05:30:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:37,566 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 782 transitions. [2020-09-25 05:30:37,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 782 transitions. [2020-09-25 05:30:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 05:30:37,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:37,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:37,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:30:37,573 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:37,573 INFO L82 PathProgramCache]: Analyzing trace with hash 367087975, now seen corresponding path program 1 times [2020-09-25 05:30:37,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:37,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191396070] [2020-09-25 05:30:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:37,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:38,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:38,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 05:30:38,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:30:38,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-09-25 05:30:38,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:38,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-09-25 05:30:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:30:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:38,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:38,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:38,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:38,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:38,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:38,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:38,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:38,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191396070] [2020-09-25 05:30:38,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:38,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:38,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693262979] [2020-09-25 05:30:38,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:38,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:38,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:38,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:38,604 INFO L87 Difference]: Start difference. First operand 633 states and 782 transitions. Second operand 3 states. [2020-09-25 05:30:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:38,645 INFO L93 Difference]: Finished difference Result 1611 states and 2049 transitions. [2020-09-25 05:30:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:38,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-09-25 05:30:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:38,652 INFO L225 Difference]: With dead ends: 1611 [2020-09-25 05:30:38,653 INFO L226 Difference]: Without dead ends: 1122 [2020-09-25 05:30:38,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2020-09-25 05:30:38,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 878. [2020-09-25 05:30:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 05:30:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1100 transitions. [2020-09-25 05:30:38,685 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1100 transitions. Word has length 159 [2020-09-25 05:30:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:38,686 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1100 transitions. [2020-09-25 05:30:38,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:38,686 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1100 transitions. [2020-09-25 05:30:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 05:30:38,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:38,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:38,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:30:38,690 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:38,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:38,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1184736425, now seen corresponding path program 1 times [2020-09-25 05:30:38,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:38,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139493866] [2020-09-25 05:30:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:38,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:39,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:39,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 05:30:39,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-09-25 05:30:39,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:39,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:30:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-09-25 05:30:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:30:39,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:39,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:39,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:39,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:39,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:39,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:39,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:39,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:39,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:39,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139493866] [2020-09-25 05:30:39,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:39,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:30:39,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199291810] [2020-09-25 05:30:39,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:30:39,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:30:39,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:30:39,431 INFO L87 Difference]: Start difference. First operand 878 states and 1100 transitions. Second operand 4 states. [2020-09-25 05:30:39,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:39,782 INFO L93 Difference]: Finished difference Result 1066 states and 1337 transitions. [2020-09-25 05:30:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:30:39,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-09-25 05:30:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:39,794 INFO L225 Difference]: With dead ends: 1066 [2020-09-25 05:30:39,794 INFO L226 Difference]: Without dead ends: 1064 [2020-09-25 05:30:39,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:30:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2020-09-25 05:30:39,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 908. [2020-09-25 05:30:39,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2020-09-25 05:30:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1138 transitions. [2020-09-25 05:30:39,833 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1138 transitions. Word has length 159 [2020-09-25 05:30:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:39,835 INFO L479 AbstractCegarLoop]: Abstraction has 908 states and 1138 transitions. [2020-09-25 05:30:39,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:30:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1138 transitions. [2020-09-25 05:30:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 05:30:39,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:39,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:39,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:30:39,839 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:39,839 INFO L82 PathProgramCache]: Analyzing trace with hash -252964714, now seen corresponding path program 1 times [2020-09-25 05:30:39,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:39,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092450564] [2020-09-25 05:30:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:40,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 05:30:40,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:30:40,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-25 05:30:40,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:40,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:40,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-09-25 05:30:40,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:30:40,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:40,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:40,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:40,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:40,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:30:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:40,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092450564] [2020-09-25 05:30:40,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:40,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:41,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204262227] [2020-09-25 05:30:41,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:41,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:41,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:41,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:41,002 INFO L87 Difference]: Start difference. First operand 908 states and 1138 transitions. Second operand 3 states. [2020-09-25 05:30:41,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:41,026 INFO L93 Difference]: Finished difference Result 1591 states and 2039 transitions. [2020-09-25 05:30:41,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:41,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-09-25 05:30:41,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:41,031 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 05:30:41,031 INFO L226 Difference]: Without dead ends: 809 [2020-09-25 05:30:41,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:41,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-09-25 05:30:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 809. [2020-09-25 05:30:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2020-09-25 05:30:41,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1012 transitions. [2020-09-25 05:30:41,055 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1012 transitions. Word has length 165 [2020-09-25 05:30:41,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:41,055 INFO L479 AbstractCegarLoop]: Abstraction has 809 states and 1012 transitions. [2020-09-25 05:30:41,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1012 transitions. [2020-09-25 05:30:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 05:30:41,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:41,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:41,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:30:41,060 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:41,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1580880327, now seen corresponding path program 1 times [2020-09-25 05:30:41,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:41,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890725192] [2020-09-25 05:30:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:41,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:41,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:41,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:42,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:42,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 05:30:42,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:30:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1504 [2020-09-25 05:30:42,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:42,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-25 05:30:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:30:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:42,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:42,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:42,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:42,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:42,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:42,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:42,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:42,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:42,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890725192] [2020-09-25 05:30:42,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:42,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:42,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500493110] [2020-09-25 05:30:42,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:42,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:42,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:42,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:42,657 INFO L87 Difference]: Start difference. First operand 809 states and 1012 transitions. Second operand 3 states. [2020-09-25 05:30:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:42,696 INFO L93 Difference]: Finished difference Result 1494 states and 1902 transitions. [2020-09-25 05:30:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:42,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-09-25 05:30:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:42,700 INFO L225 Difference]: With dead ends: 1494 [2020-09-25 05:30:42,701 INFO L226 Difference]: Without dead ends: 830 [2020-09-25 05:30:42,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:42,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-09-25 05:30:42,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 827. [2020-09-25 05:30:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-09-25 05:30:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1033 transitions. [2020-09-25 05:30:42,722 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1033 transitions. Word has length 169 [2020-09-25 05:30:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:42,722 INFO L479 AbstractCegarLoop]: Abstraction has 827 states and 1033 transitions. [2020-09-25 05:30:42,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1033 transitions. [2020-09-25 05:30:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 05:30:42,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:42,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:42,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:30:42,726 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:42,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:42,726 INFO L82 PathProgramCache]: Analyzing trace with hash -368440854, now seen corresponding path program 1 times [2020-09-25 05:30:42,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:42,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013518878] [2020-09-25 05:30:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:42,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:43,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:43,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 05:30:43,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-09-25 05:30:43,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:43,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:30:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 05:30:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-25 05:30:43,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:43,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:43,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:43,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:43,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:43,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:30:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:43,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013518878] [2020-09-25 05:30:43,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:43,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:30:43,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357732055] [2020-09-25 05:30:43,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:30:43,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:43,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:30:43,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:30:43,693 INFO L87 Difference]: Start difference. First operand 827 states and 1033 transitions. Second operand 7 states. [2020-09-25 05:30:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:44,053 INFO L93 Difference]: Finished difference Result 1809 states and 2355 transitions. [2020-09-25 05:30:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:30:44,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-25 05:30:44,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:44,059 INFO L225 Difference]: With dead ends: 1809 [2020-09-25 05:30:44,060 INFO L226 Difference]: Without dead ends: 1091 [2020-09-25 05:30:44,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:30:44,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2020-09-25 05:30:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1026. [2020-09-25 05:30:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1026 states. [2020-09-25 05:30:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1281 transitions. [2020-09-25 05:30:44,102 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1281 transitions. Word has length 170 [2020-09-25 05:30:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:44,103 INFO L479 AbstractCegarLoop]: Abstraction has 1026 states and 1281 transitions. [2020-09-25 05:30:44,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:30:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1281 transitions. [2020-09-25 05:30:44,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 05:30:44,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:44,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:44,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:30:44,107 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:44,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:44,108 INFO L82 PathProgramCache]: Analyzing trace with hash -2107579087, now seen corresponding path program 1 times [2020-09-25 05:30:44,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:44,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340613534] [2020-09-25 05:30:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:44,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:44,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:44,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:44,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 05:30:44,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:30:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-09-25 05:30:44,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:44,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-09-25 05:30:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:30:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:44,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:44,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:44,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:44,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:44,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:30:44,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:44,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:44,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:44,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340613534] [2020-09-25 05:30:44,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:44,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:44,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398634405] [2020-09-25 05:30:44,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:44,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:44,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:44,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:44,748 INFO L87 Difference]: Start difference. First operand 1026 states and 1281 transitions. Second operand 3 states. [2020-09-25 05:30:44,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:44,784 INFO L93 Difference]: Finished difference Result 1907 states and 2413 transitions. [2020-09-25 05:30:44,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:44,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-09-25 05:30:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:44,790 INFO L225 Difference]: With dead ends: 1907 [2020-09-25 05:30:44,791 INFO L226 Difference]: Without dead ends: 1026 [2020-09-25 05:30:44,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-09-25 05:30:44,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2020-09-25 05:30:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1026 states. [2020-09-25 05:30:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1267 transitions. [2020-09-25 05:30:44,838 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1267 transitions. Word has length 192 [2020-09-25 05:30:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:44,839 INFO L479 AbstractCegarLoop]: Abstraction has 1026 states and 1267 transitions. [2020-09-25 05:30:44,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1267 transitions. [2020-09-25 05:30:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 05:30:44,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:44,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:44,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:30:44,844 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash -975828062, now seen corresponding path program 1 times [2020-09-25 05:30:44,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:44,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389145196] [2020-09-25 05:30:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:45,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 05:30:45,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:45,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 05:30:45,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:45,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-25 05:30:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:30:45,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:45,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:45,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:45,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:45,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:45,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:45,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:45,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:45,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:45,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:45,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:30:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:30:45,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389145196] [2020-09-25 05:30:45,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:45,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:45,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531331991] [2020-09-25 05:30:45,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:45,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:45,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:45,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:45,310 INFO L87 Difference]: Start difference. First operand 1026 states and 1267 transitions. Second operand 3 states. [2020-09-25 05:30:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:45,477 INFO L93 Difference]: Finished difference Result 2731 states and 3446 transitions. [2020-09-25 05:30:45,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:45,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-09-25 05:30:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:45,490 INFO L225 Difference]: With dead ends: 2731 [2020-09-25 05:30:45,491 INFO L226 Difference]: Without dead ends: 1850 [2020-09-25 05:30:45,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:45,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2020-09-25 05:30:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1848. [2020-09-25 05:30:45,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1848 states. [2020-09-25 05:30:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2291 transitions. [2020-09-25 05:30:45,601 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2291 transitions. Word has length 193 [2020-09-25 05:30:45,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:45,602 INFO L479 AbstractCegarLoop]: Abstraction has 1848 states and 2291 transitions. [2020-09-25 05:30:45,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2291 transitions. [2020-09-25 05:30:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 05:30:45,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:45,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:45,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:30:45,612 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:45,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:45,612 INFO L82 PathProgramCache]: Analyzing trace with hash -181447866, now seen corresponding path program 1 times [2020-09-25 05:30:45,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:45,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720344437] [2020-09-25 05:30:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 05:30:46,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-25 05:30:46,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-09-25 05:30:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:30:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:46,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:46,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:46,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:46,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:46,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720344437] [2020-09-25 05:30:46,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:46,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:46,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295451084] [2020-09-25 05:30:46,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:46,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:46,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:46,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:46,142 INFO L87 Difference]: Start difference. First operand 1848 states and 2291 transitions. Second operand 3 states. [2020-09-25 05:30:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:46,252 INFO L93 Difference]: Finished difference Result 3557 states and 4439 transitions. [2020-09-25 05:30:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:46,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-09-25 05:30:46,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:46,266 INFO L225 Difference]: With dead ends: 3557 [2020-09-25 05:30:46,267 INFO L226 Difference]: Without dead ends: 1854 [2020-09-25 05:30:46,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:46,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-09-25 05:30:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1848. [2020-09-25 05:30:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1848 states. [2020-09-25 05:30:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2269 transitions. [2020-09-25 05:30:46,371 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2269 transitions. Word has length 194 [2020-09-25 05:30:46,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:46,371 INFO L479 AbstractCegarLoop]: Abstraction has 1848 states and 2269 transitions. [2020-09-25 05:30:46,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2269 transitions. [2020-09-25 05:30:46,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 05:30:46,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:46,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:46,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:30:46,381 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:46,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:46,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1489848689, now seen corresponding path program 1 times [2020-09-25 05:30:46,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:46,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012833507] [2020-09-25 05:30:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:47,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:47,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 05:30:47,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:30:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-09-25 05:30:47,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:47,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 05:30:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:30:47,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:47,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:47,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:47,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:47,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:47,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:47,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:47,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:47,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012833507] [2020-09-25 05:30:47,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:47,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:47,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121383710] [2020-09-25 05:30:47,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:47,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:47,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:47,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:47,808 INFO L87 Difference]: Start difference. First operand 1848 states and 2269 transitions. Second operand 3 states. [2020-09-25 05:30:47,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:47,958 INFO L93 Difference]: Finished difference Result 3562 states and 4432 transitions. [2020-09-25 05:30:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:47,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2020-09-25 05:30:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:47,972 INFO L225 Difference]: With dead ends: 3562 [2020-09-25 05:30:47,972 INFO L226 Difference]: Without dead ends: 2681 [2020-09-25 05:30:47,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:47,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2020-09-25 05:30:48,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2679. [2020-09-25 05:30:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2679 states. [2020-09-25 05:30:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 3288 transitions. [2020-09-25 05:30:48,053 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 3288 transitions. Word has length 198 [2020-09-25 05:30:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:48,054 INFO L479 AbstractCegarLoop]: Abstraction has 2679 states and 3288 transitions. [2020-09-25 05:30:48,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 3288 transitions. [2020-09-25 05:30:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 05:30:48,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:48,060 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:48,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:30:48,060 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:48,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:48,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1416114514, now seen corresponding path program 1 times [2020-09-25 05:30:48,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:48,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466773322] [2020-09-25 05:30:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:48,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:48,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:48,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:48,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 05:30:48,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:30:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-09-25 05:30:48,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:48,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-09-25 05:30:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:30:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:48,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:48,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:48,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:48,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:48,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:48,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:48,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:48,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466773322] [2020-09-25 05:30:48,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:48,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:48,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46680471] [2020-09-25 05:30:48,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:48,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:48,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:48,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:48,829 INFO L87 Difference]: Start difference. First operand 2679 states and 3288 transitions. Second operand 3 states. [2020-09-25 05:30:49,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:49,110 INFO L93 Difference]: Finished difference Result 5869 states and 7403 transitions. [2020-09-25 05:30:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:49,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2020-09-25 05:30:49,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:49,125 INFO L225 Difference]: With dead ends: 5869 [2020-09-25 05:30:49,125 INFO L226 Difference]: Without dead ends: 3185 [2020-09-25 05:30:49,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:49,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2020-09-25 05:30:49,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 3129. [2020-09-25 05:30:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-09-25 05:30:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 3795 transitions. [2020-09-25 05:30:49,215 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 3795 transitions. Word has length 199 [2020-09-25 05:30:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:49,216 INFO L479 AbstractCegarLoop]: Abstraction has 3129 states and 3795 transitions. [2020-09-25 05:30:49,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:49,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 3795 transitions. [2020-09-25 05:30:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 05:30:49,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:49,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:49,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:30:49,223 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:49,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:49,223 INFO L82 PathProgramCache]: Analyzing trace with hash 595350838, now seen corresponding path program 1 times [2020-09-25 05:30:49,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:49,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000787212] [2020-09-25 05:30:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:49,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:49,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:49,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 05:30:49,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 05:30:49,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:49,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:30:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 05:30:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:30:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:49,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:49,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:49,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:49,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:49,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:49,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:49,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:49,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000787212] [2020-09-25 05:30:49,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:49,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:30:49,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452554054] [2020-09-25 05:30:49,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:30:49,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:49,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:30:49,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:30:49,567 INFO L87 Difference]: Start difference. First operand 3129 states and 3795 transitions. Second operand 4 states. [2020-09-25 05:30:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:49,773 INFO L93 Difference]: Finished difference Result 12029 states and 14656 transitions. [2020-09-25 05:30:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:30:49,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-09-25 05:30:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:49,813 INFO L225 Difference]: With dead ends: 12029 [2020-09-25 05:30:49,814 INFO L226 Difference]: Without dead ends: 9045 [2020-09-25 05:30:49,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:30:49,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9045 states. [2020-09-25 05:30:50,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9045 to 5987. [2020-09-25 05:30:50,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5987 states. [2020-09-25 05:30:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5987 states to 5987 states and 7237 transitions. [2020-09-25 05:30:50,092 INFO L78 Accepts]: Start accepts. Automaton has 5987 states and 7237 transitions. Word has length 201 [2020-09-25 05:30:50,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:50,093 INFO L479 AbstractCegarLoop]: Abstraction has 5987 states and 7237 transitions. [2020-09-25 05:30:50,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:30:50,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5987 states and 7237 transitions. [2020-09-25 05:30:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 05:30:50,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:50,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:50,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 05:30:50,105 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:50,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:50,105 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-09-25 05:30:50,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:50,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213271026] [2020-09-25 05:30:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:30:50,142 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:30:50,142 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:30:50,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 05:30:50,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:30:50 BoogieIcfgContainer [2020-09-25 05:30:50,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:30:50,190 INFO L168 Benchmark]: Toolchain (without parser) took 16948.04 ms. Allocated memory was 141.6 MB in the beginning and 471.9 MB in the end (delta: 330.3 MB). Free memory was 102.6 MB in the beginning and 91.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 341.6 MB. Max. memory is 7.1 GB. [2020-09-25 05:30:50,191 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 05:30:50,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.78 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 180.6 MB in the end (delta: -78.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:30:50,193 INFO L168 Benchmark]: Boogie Preprocessor took 66.43 ms. Allocated memory is still 205.5 MB. Free memory was 180.6 MB in the beginning and 178.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:30:50,193 INFO L168 Benchmark]: RCFGBuilder took 1158.65 ms. Allocated memory is still 205.5 MB. Free memory was 178.0 MB in the beginning and 106.4 MB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:30:50,194 INFO L168 Benchmark]: TraceAbstraction took 15156.39 ms. Allocated memory was 205.5 MB in the beginning and 471.9 MB in the end (delta: 266.3 MB). Free memory was 105.7 MB in the beginning and 91.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 280.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:30:50,197 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 556.78 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 180.6 MB in the end (delta: -78.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.43 ms. Allocated memory is still 205.5 MB. Free memory was 180.6 MB in the beginning and 178.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1158.65 ms. Allocated memory is still 205.5 MB. Free memory was 178.0 MB in the beginning and 106.4 MB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15156.39 ms. Allocated memory was 205.5 MB in the beginning and 471.9 MB in the end (delta: 266.3 MB). Free memory was 105.7 MB in the beginning and 91.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 280.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 640]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L645] int s ; [L646] int tmp ; [L650] s = 8464 [L651] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__s3__tmp__reuse_message = 0 [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 FALSE !(s__info_callback != 0) [L84] COND FALSE !(s__ctx__info_callback != 0) [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 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND FALSE !(state == 8496) [L614] COND FALSE !(\read(s__debug)) [L620] COND FALSE !(cb != 0) [L629] 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 [L289] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 8512 [L297] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND TRUE state == 8496 [L640] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 426 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.0s, OverallIterations: 13, TraceHistogramMax: 2, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6161 SDtfs, 4033 SDslu, 6045 SDs, 0 SdLazy, 631 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5987occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 3594 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 2358 NumberOfCodeBlocks, 2358 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2145 ConstructedInterpolants, 0 QuantifiedInterpolants, 584149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 85/85 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...