/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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 14:33:40,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:33:40,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:33:40,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:33:40,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:33:40,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:33:40,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:33:40,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:33:40,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:33:40,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:33:40,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:33:40,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:33:40,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:33:40,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:33:40,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:33:40,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:33:40,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:33:40,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:33:40,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:33:40,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:33:40,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:33:40,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:33:40,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:33:40,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:33:40,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:33:40,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:33:40,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:33:40,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:33:40,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:33:40,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:33:40,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:33:40,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:33:40,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:33:40,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:33:40,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:33:40,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:33:40,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:33:40,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:33:40,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:33:40,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:33:40,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:33:40,157 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 14:33:40,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:33:40,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:33:40,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:33:40,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:33:40,222 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:33:40,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:33:40,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:33:40,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:33:40,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:33:40,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:33:40,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:33:40,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:33:40,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:33:40,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:33:40,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:33:40,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:33:40,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:33:40,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:33:40,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:33:40,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:33:40,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:33:40,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:40,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:33:40,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:33:40,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:33:40,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:33:40,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:33:40,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:33:40,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:33:40,229 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:33:40,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:33:40,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:33:40,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:33:40,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:33:40,707 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:33:40,708 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 14:33:40,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0a76f800/f304a6b9fc1444638871026fcfbace12/FLAG946a94140 [2020-09-25 14:33:41,369 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:33:41,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 14:33:41,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0a76f800/f304a6b9fc1444638871026fcfbace12/FLAG946a94140 [2020-09-25 14:33:41,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0a76f800/f304a6b9fc1444638871026fcfbace12 [2020-09-25 14:33:41,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:33:41,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:33:41,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:41,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:33:41,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:33:41,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:41" (1/1) ... [2020-09-25 14:33:41,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377d8449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41, skipping insertion in model container [2020-09-25 14:33:41,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:41" (1/1) ... [2020-09-25 14:33:41,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:33:41,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:33:42,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:42,133 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:33:42,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:42,310 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:33:42,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:42 WrapperNode [2020-09-25 14:33:42,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:42,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:33:42,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:33:42,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:33:42,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:42" (1/1) ... [2020-09-25 14:33:42,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:42" (1/1) ... [2020-09-25 14:33:42,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:42" (1/1) ... [2020-09-25 14:33:42,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:42" (1/1) ... [2020-09-25 14:33:42,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:42" (1/1) ... [2020-09-25 14:33:42,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:42" (1/1) ... [2020-09-25 14:33:42,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:42" (1/1) ... [2020-09-25 14:33:42,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:33:42,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:33:42,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:33:42,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:33:42,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:42" (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 14:33:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:33:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:33:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 14:33:42,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:33:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:33:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:33:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:33:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 14:33:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 14:33:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:33:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:33:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:33:42,692 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:43,349 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 14:33:43,349 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 14:33:43,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:33:43,368 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:33:43,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:43 BoogieIcfgContainer [2020-09-25 14:33:43,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:33:43,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:33:43,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:33:43,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:33:43,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:33:41" (1/3) ... [2020-09-25 14:33:43,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b88e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:43, skipping insertion in model container [2020-09-25 14:33:43,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:42" (2/3) ... [2020-09-25 14:33:43,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b88e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:43, skipping insertion in model container [2020-09-25 14:33:43,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:43" (3/3) ... [2020-09-25 14:33:43,388 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-09-25 14:33:43,400 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:33:43,411 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:33:43,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:33:43,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:33:43,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:33:43,469 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:33:43,469 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:33:43,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:33:43,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:33:43,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:33:43,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:33:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-09-25 14:33:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 14:33:43,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:43,519 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 14:33:43,520 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:43,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:43,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-09-25 14:33:43,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:43,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014625201] [2020-09-25 14:33:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:43,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:45,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 14:33:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-09-25 14:33:45,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:45,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:33:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 14:33:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:33:45,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:45,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:45,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:45,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:45,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:45,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:45,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:45,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:45,402 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 14:33:45,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014625201] [2020-09-25 14:33:45,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:45,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:33:45,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249293318] [2020-09-25 14:33:45,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:33:45,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:45,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:33:45,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:33:45,434 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 6 states. [2020-09-25 14:33:45,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:45,967 INFO L93 Difference]: Finished difference Result 802 states and 1073 transitions. [2020-09-25 14:33:45,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:33:45,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-25 14:33:45,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:45,991 INFO L225 Difference]: With dead ends: 802 [2020-09-25 14:33:45,992 INFO L226 Difference]: Without dead ends: 459 [2020-09-25 14:33:45,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:33:46,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-09-25 14:33:46,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2020-09-25 14:33:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-09-25 14:33:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 535 transitions. [2020-09-25 14:33:46,088 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 535 transitions. Word has length 158 [2020-09-25 14:33:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:46,089 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 535 transitions. [2020-09-25 14:33:46,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:33:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 535 transitions. [2020-09-25 14:33:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 14:33:46,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:46,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:46,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:33:46,094 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:46,095 INFO L82 PathProgramCache]: Analyzing trace with hash 796395907, now seen corresponding path program 1 times [2020-09-25 14:33:46,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:46,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868464883] [2020-09-25 14:33:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:46,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:46,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:47,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:47,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:47,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 14:33:47,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:33:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1679 [2020-09-25 14:33:47,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:47,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:33:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 14:33:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:47,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:47,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:47,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:47,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:47,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:47,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:47,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:47,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:47,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:47,948 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 14:33:47,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868464883] [2020-09-25 14:33:47,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:47,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:33:47,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143992916] [2020-09-25 14:33:47,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:33:47,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:47,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:33:47,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:33:47,952 INFO L87 Difference]: Start difference. First operand 444 states and 535 transitions. Second operand 6 states. [2020-09-25 14:33:48,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:48,230 INFO L93 Difference]: Finished difference Result 783 states and 972 transitions. [2020-09-25 14:33:48,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:33:48,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-25 14:33:48,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:48,235 INFO L225 Difference]: With dead ends: 783 [2020-09-25 14:33:48,235 INFO L226 Difference]: Without dead ends: 482 [2020-09-25 14:33:48,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:33:48,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-25 14:33:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 469. [2020-09-25 14:33:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-09-25 14:33:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 568 transitions. [2020-09-25 14:33:48,260 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 568 transitions. Word has length 166 [2020-09-25 14:33:48,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:48,261 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 568 transitions. [2020-09-25 14:33:48,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:33:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 568 transitions. [2020-09-25 14:33:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 14:33:48,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:48,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:48,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:33:48,265 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:48,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:48,266 INFO L82 PathProgramCache]: Analyzing trace with hash 467731815, now seen corresponding path program 1 times [2020-09-25 14:33:48,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:48,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494438005] [2020-09-25 14:33:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:48,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:49,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:49,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 14:33:49,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:49,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-09-25 14:33:49,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:49,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:33:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:33:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 14:33:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:49,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:49,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:49,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:49,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:49,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:49,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:49,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:49,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:49,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:49,543 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 14:33:49,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494438005] [2020-09-25 14:33:49,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:49,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:33:49,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585723679] [2020-09-25 14:33:49,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:33:49,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:49,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:33:49,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:33:49,546 INFO L87 Difference]: Start difference. First operand 469 states and 568 transitions. Second operand 7 states. [2020-09-25 14:33:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:49,931 INFO L93 Difference]: Finished difference Result 852 states and 1065 transitions. [2020-09-25 14:33:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:33:49,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-25 14:33:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:49,944 INFO L225 Difference]: With dead ends: 852 [2020-09-25 14:33:49,944 INFO L226 Difference]: Without dead ends: 526 [2020-09-25 14:33:49,946 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 14:33:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-09-25 14:33:49,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 491. [2020-09-25 14:33:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-25 14:33:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 598 transitions. [2020-09-25 14:33:49,981 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 598 transitions. Word has length 167 [2020-09-25 14:33:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:49,983 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 598 transitions. [2020-09-25 14:33:49,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:33:49,983 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 598 transitions. [2020-09-25 14:33:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 14:33:49,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:49,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:49,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:33:49,994 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:49,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1852412155, now seen corresponding path program 1 times [2020-09-25 14:33:49,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:49,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495596943] [2020-09-25 14:33:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:50,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 14:33:51,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:33:51,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-09-25 14:33:51,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-25 14:33:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:33:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:51,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:51,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:51,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:51,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:33:51,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495596943] [2020-09-25 14:33:51,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:51,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:51,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565615232] [2020-09-25 14:33:51,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:51,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:51,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:51,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:51,313 INFO L87 Difference]: Start difference. First operand 491 states and 598 transitions. Second operand 3 states. [2020-09-25 14:33:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:51,410 INFO L93 Difference]: Finished difference Result 855 states and 1066 transitions. [2020-09-25 14:33:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:51,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2020-09-25 14:33:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:51,414 INFO L225 Difference]: With dead ends: 855 [2020-09-25 14:33:51,415 INFO L226 Difference]: Without dead ends: 507 [2020-09-25 14:33:51,416 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 14:33:51,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-25 14:33:51,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2020-09-25 14:33:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-25 14:33:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 614 transitions. [2020-09-25 14:33:51,436 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 614 transitions. Word has length 180 [2020-09-25 14:33:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:51,437 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 614 transitions. [2020-09-25 14:33:51,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 614 transitions. [2020-09-25 14:33:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 14:33:51,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:51,440 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:33:51,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:33:51,441 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:51,441 INFO L82 PathProgramCache]: Analyzing trace with hash -309243059, now seen corresponding path program 1 times [2020-09-25 14:33:51,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:51,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625711765] [2020-09-25 14:33:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:52,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 14:33:52,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:33:52,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-09-25 14:33:52,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:52,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-09-25 14:33:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:33:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:52,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:52,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:52,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:52,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625711765] [2020-09-25 14:33:52,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:52,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:52,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969626802] [2020-09-25 14:33:52,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:52,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:52,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:52,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:52,399 INFO L87 Difference]: Start difference. First operand 507 states and 614 transitions. Second operand 3 states. [2020-09-25 14:33:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:52,421 INFO L93 Difference]: Finished difference Result 855 states and 1065 transitions. [2020-09-25 14:33:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:52,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-09-25 14:33:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:52,426 INFO L225 Difference]: With dead ends: 855 [2020-09-25 14:33:52,426 INFO L226 Difference]: Without dead ends: 507 [2020-09-25 14:33:52,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:52,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-25 14:33:52,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2020-09-25 14:33:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-25 14:33:52,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 610 transitions. [2020-09-25 14:33:52,448 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 610 transitions. Word has length 181 [2020-09-25 14:33:52,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:52,449 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 610 transitions. [2020-09-25 14:33:52,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:52,450 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 610 transitions. [2020-09-25 14:33:52,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 14:33:52,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:52,455 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] [2020-09-25 14:33:52,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:33:52,455 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:52,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:52,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1474841658, now seen corresponding path program 1 times [2020-09-25 14:33:52,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:52,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059279130] [2020-09-25 14:33:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:53,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 14:33:53,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-09-25 14:33:53,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:53,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-09-25 14:33:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:33:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:53,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:53,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:53,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:53,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:53,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:53,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:53,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:33:53,172 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 14:33:53,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059279130] [2020-09-25 14:33:53,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:53,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:53,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492844104] [2020-09-25 14:33:53,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:53,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:53,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:53,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:53,175 INFO L87 Difference]: Start difference. First operand 507 states and 610 transitions. Second operand 3 states. [2020-09-25 14:33:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:53,209 INFO L93 Difference]: Finished difference Result 862 states and 1065 transitions. [2020-09-25 14:33:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:53,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-09-25 14:33:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:53,213 INFO L225 Difference]: With dead ends: 862 [2020-09-25 14:33:53,213 INFO L226 Difference]: Without dead ends: 514 [2020-09-25 14:33:53,214 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 14:33:53,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-09-25 14:33:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 513. [2020-09-25 14:33:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 14:33:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 613 transitions. [2020-09-25 14:33:53,230 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 613 transitions. Word has length 182 [2020-09-25 14:33:53,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:53,231 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 613 transitions. [2020-09-25 14:33:53,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 613 transitions. [2020-09-25 14:33:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 14:33:53,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:53,234 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] [2020-09-25 14:33:53,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:33:53,235 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:53,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1516170884, now seen corresponding path program 1 times [2020-09-25 14:33:53,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:53,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16886174] [2020-09-25 14:33:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:54,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 14:33:54,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:33:54,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-09-25 14:33:54,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:54,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:54,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 14:33:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:33:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:33:54,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:54,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:54,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:54,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:54,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:54,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:54,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:54,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:33:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 14:33:54,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16886174] [2020-09-25 14:33:54,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:54,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:54,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215776681] [2020-09-25 14:33:54,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:54,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:54,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:54,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:54,373 INFO L87 Difference]: Start difference. First operand 513 states and 613 transitions. Second operand 3 states. [2020-09-25 14:33:54,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:54,422 INFO L93 Difference]: Finished difference Result 1226 states and 1509 transitions. [2020-09-25 14:33:54,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:54,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-09-25 14:33:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:54,430 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 14:33:54,430 INFO L226 Difference]: Without dead ends: 872 [2020-09-25 14:33:54,433 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 14:33:54,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-09-25 14:33:54,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2020-09-25 14:33:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-09-25 14:33:54,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1054 transitions. [2020-09-25 14:33:54,476 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1054 transitions. Word has length 185 [2020-09-25 14:33:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:54,477 INFO L479 AbstractCegarLoop]: Abstraction has 870 states and 1054 transitions. [2020-09-25 14:33:54,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:54,477 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1054 transitions. [2020-09-25 14:33:54,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 14:33:54,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:54,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:54,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:33:54,483 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1645719778, now seen corresponding path program 1 times [2020-09-25 14:33:54,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:54,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35300961] [2020-09-25 14:33:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:55,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:55,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 14:33:55,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:33:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1441 [2020-09-25 14:33:55,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:55,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-09-25 14:33:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:33:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:56,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:56,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:56,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 14:33:56,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35300961] [2020-09-25 14:33:56,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:56,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:56,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505152128] [2020-09-25 14:33:56,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:56,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:56,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:56,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:56,070 INFO L87 Difference]: Start difference. First operand 870 states and 1054 transitions. Second operand 3 states. [2020-09-25 14:33:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:56,121 INFO L93 Difference]: Finished difference Result 2271 states and 2812 transitions. [2020-09-25 14:33:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:56,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-25 14:33:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:56,130 INFO L225 Difference]: With dead ends: 2271 [2020-09-25 14:33:56,130 INFO L226 Difference]: Without dead ends: 1577 [2020-09-25 14:33:56,134 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 14:33:56,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2020-09-25 14:33:56,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1235. [2020-09-25 14:33:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2020-09-25 14:33:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1509 transitions. [2020-09-25 14:33:56,198 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1509 transitions. Word has length 187 [2020-09-25 14:33:56,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:56,198 INFO L479 AbstractCegarLoop]: Abstraction has 1235 states and 1509 transitions. [2020-09-25 14:33:56,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1509 transitions. [2020-09-25 14:33:56,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 14:33:56,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:56,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:56,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:33:56,204 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:56,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:56,204 INFO L82 PathProgramCache]: Analyzing trace with hash -293442268, now seen corresponding path program 1 times [2020-09-25 14:33:56,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:56,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600390639] [2020-09-25 14:33:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 14:33:57,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:33:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-09-25 14:33:57,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 14:33:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:33:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:57,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:57,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:57,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:57,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:33:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:57,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600390639] [2020-09-25 14:33:57,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:57,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:57,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33947122] [2020-09-25 14:33:57,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:57,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:57,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:57,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:57,155 INFO L87 Difference]: Start difference. First operand 1235 states and 1509 transitions. Second operand 3 states. [2020-09-25 14:33:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:57,434 INFO L93 Difference]: Finished difference Result 2476 states and 3136 transitions. [2020-09-25 14:33:57,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:57,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-25 14:33:57,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:57,441 INFO L225 Difference]: With dead ends: 2476 [2020-09-25 14:33:57,442 INFO L226 Difference]: Without dead ends: 1398 [2020-09-25 14:33:57,444 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 14:33:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2020-09-25 14:33:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1348. [2020-09-25 14:33:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1348 states. [2020-09-25 14:33:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1676 transitions. [2020-09-25 14:33:57,491 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1676 transitions. Word has length 187 [2020-09-25 14:33:57,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:57,492 INFO L479 AbstractCegarLoop]: Abstraction has 1348 states and 1676 transitions. [2020-09-25 14:33:57,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1676 transitions. [2020-09-25 14:33:57,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 14:33:57,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:57,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:57,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:33:57,497 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:57,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:57,498 INFO L82 PathProgramCache]: Analyzing trace with hash 340252365, now seen corresponding path program 1 times [2020-09-25 14:33:57,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:57,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416341874] [2020-09-25 14:33:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 14:33:58,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:33:58,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-09-25 14:33:58,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 14:33:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:33:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:58,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:58,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:58,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:58,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:33:58,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416341874] [2020-09-25 14:33:58,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:58,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:33:58,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969169118] [2020-09-25 14:33:58,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:33:58,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:58,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:33:58,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:33:58,464 INFO L87 Difference]: Start difference. First operand 1348 states and 1676 transitions. Second operand 4 states. [2020-09-25 14:33:58,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:58,800 INFO L93 Difference]: Finished difference Result 2636 states and 3306 transitions. [2020-09-25 14:33:58,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:33:58,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-09-25 14:33:58,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:58,810 INFO L225 Difference]: With dead ends: 2636 [2020-09-25 14:33:58,810 INFO L226 Difference]: Without dead ends: 1448 [2020-09-25 14:33:58,813 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 14:33:58,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2020-09-25 14:33:58,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1380. [2020-09-25 14:33:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1380 states. [2020-09-25 14:33:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1717 transitions. [2020-09-25 14:33:58,858 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1717 transitions. Word has length 191 [2020-09-25 14:33:58,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:58,859 INFO L479 AbstractCegarLoop]: Abstraction has 1380 states and 1717 transitions. [2020-09-25 14:33:58,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:33:58,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1717 transitions. [2020-09-25 14:33:58,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 14:33:58,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:58,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:58,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:33:58,864 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:58,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1723420881, now seen corresponding path program 1 times [2020-09-25 14:33:58,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:58,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261766185] [2020-09-25 14:33:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:00,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:00,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 14:34:00,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:34:00,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-09-25 14:34:00,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:00,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 14:34:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:34:00,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:00,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:00,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:00,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:00,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:00,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:00,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:34:00,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:00,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:34:00,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261766185] [2020-09-25 14:34:00,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:00,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:34:00,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619205305] [2020-09-25 14:34:00,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:34:00,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:00,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:34:00,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:00,602 INFO L87 Difference]: Start difference. First operand 1380 states and 1717 transitions. Second operand 3 states. [2020-09-25 14:34:00,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:00,896 INFO L93 Difference]: Finished difference Result 2864 states and 3707 transitions. [2020-09-25 14:34:00,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:34:00,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-09-25 14:34:00,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:00,908 INFO L225 Difference]: With dead ends: 2864 [2020-09-25 14:34:00,908 INFO L226 Difference]: Without dead ends: 1611 [2020-09-25 14:34:00,914 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 14:34:00,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-09-25 14:34:00,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1540. [2020-09-25 14:34:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1540 states. [2020-09-25 14:34:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 1928 transitions. [2020-09-25 14:34:01,003 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 1928 transitions. Word has length 193 [2020-09-25 14:34:01,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:01,004 INFO L479 AbstractCegarLoop]: Abstraction has 1540 states and 1928 transitions. [2020-09-25 14:34:01,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:34:01,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 1928 transitions. [2020-09-25 14:34:01,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 14:34:01,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:01,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:01,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:34:01,012 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:01,012 INFO L82 PathProgramCache]: Analyzing trace with hash -710162504, now seen corresponding path program 1 times [2020-09-25 14:34:01,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:01,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193575163] [2020-09-25 14:34:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:01,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:01,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 14:34:01,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-09-25 14:34:01,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:01,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:34:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-25 14:34:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:34:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:01,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:01,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:01,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:01,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:01,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:01,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:01,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:34:01,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193575163] [2020-09-25 14:34:01,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:01,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:34:01,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995877728] [2020-09-25 14:34:01,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:34:01,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:01,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:34:01,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:34:01,781 INFO L87 Difference]: Start difference. First operand 1540 states and 1928 transitions. Second operand 4 states. [2020-09-25 14:34:02,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:02,048 INFO L93 Difference]: Finished difference Result 1781 states and 2199 transitions. [2020-09-25 14:34:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:34:02,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-09-25 14:34:02,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:02,057 INFO L225 Difference]: With dead ends: 1781 [2020-09-25 14:34:02,058 INFO L226 Difference]: Without dead ends: 1779 [2020-09-25 14:34:02,059 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 14:34:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2020-09-25 14:34:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1565. [2020-09-25 14:34:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-09-25 14:34:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1955 transitions. [2020-09-25 14:34:02,117 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1955 transitions. Word has length 198 [2020-09-25 14:34:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:02,117 INFO L479 AbstractCegarLoop]: Abstraction has 1565 states and 1955 transitions. [2020-09-25 14:34:02,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:34:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1955 transitions. [2020-09-25 14:34:02,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 14:34:02,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:02,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:02,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:34:02,122 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:02,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:02,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1575854146, now seen corresponding path program 1 times [2020-09-25 14:34:02,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:02,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199144646] [2020-09-25 14:34:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:02,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:02,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:02,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:02,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:03,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:03,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 14:34:03,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:34:03,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-09-25 14:34:03,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:03,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:03,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:34:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-25 14:34:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:34:03,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:03,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:03,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:03,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:03,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:03,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:34:03,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:03,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:03,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:34:03,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199144646] [2020-09-25 14:34:03,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:03,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:34:03,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610179137] [2020-09-25 14:34:03,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:34:03,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:03,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:34:03,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:34:03,092 INFO L87 Difference]: Start difference. First operand 1565 states and 1955 transitions. Second operand 4 states. [2020-09-25 14:34:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:03,425 INFO L93 Difference]: Finished difference Result 3112 states and 3909 transitions. [2020-09-25 14:34:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:34:03,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-09-25 14:34:03,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:03,437 INFO L225 Difference]: With dead ends: 3112 [2020-09-25 14:34:03,438 INFO L226 Difference]: Without dead ends: 1728 [2020-09-25 14:34:03,449 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 14:34:03,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2020-09-25 14:34:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1642. [2020-09-25 14:34:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2020-09-25 14:34:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2047 transitions. [2020-09-25 14:34:03,557 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2047 transitions. Word has length 199 [2020-09-25 14:34:03,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:03,558 INFO L479 AbstractCegarLoop]: Abstraction has 1642 states and 2047 transitions. [2020-09-25 14:34:03,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:34:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2047 transitions. [2020-09-25 14:34:03,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 14:34:03,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:03,568 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 14:34:03,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 14:34:03,568 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:03,569 INFO L82 PathProgramCache]: Analyzing trace with hash 622934254, now seen corresponding path program 1 times [2020-09-25 14:34:03,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:03,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722258301] [2020-09-25 14:34:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:04,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:04,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 14:34:04,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:04,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-09-25 14:34:04,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:04,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:04,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:34:04,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-25 14:34:04,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:34:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:04,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:04,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:04,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:04,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:34:04,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:04,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:04,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:04,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:34:04,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722258301] [2020-09-25 14:34:04,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:04,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:34:04,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717153640] [2020-09-25 14:34:04,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:34:04,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:04,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:34:04,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:34:04,238 INFO L87 Difference]: Start difference. First operand 1642 states and 2047 transitions. Second operand 4 states. [2020-09-25 14:34:04,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:04,488 INFO L93 Difference]: Finished difference Result 3255 states and 4079 transitions. [2020-09-25 14:34:04,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:34:04,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-09-25 14:34:04,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:04,497 INFO L225 Difference]: With dead ends: 3255 [2020-09-25 14:34:04,497 INFO L226 Difference]: Without dead ends: 1776 [2020-09-25 14:34:04,503 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 14:34:04,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2020-09-25 14:34:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1658. [2020-09-25 14:34:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-09-25 14:34:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2063 transitions. [2020-09-25 14:34:04,574 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2063 transitions. Word has length 199 [2020-09-25 14:34:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:04,575 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2063 transitions. [2020-09-25 14:34:04,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:34:04,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2063 transitions. [2020-09-25 14:34:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 14:34:04,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:04,583 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] [2020-09-25 14:34:04,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 14:34:04,583 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:04,584 INFO L82 PathProgramCache]: Analyzing trace with hash -455131385, now seen corresponding path program 1 times [2020-09-25 14:34:04,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:04,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793737010] [2020-09-25 14:34:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:04,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:04,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:04,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 14:34:04,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-25 14:34:04,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:04,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 14:34:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:34:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:34:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:05,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:05,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:05,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:05,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:05,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:05,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:05,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:05,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:05,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:05,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:05,067 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 14:34:05,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793737010] [2020-09-25 14:34:05,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:05,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:34:05,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046883818] [2020-09-25 14:34:05,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:34:05,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:05,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:34:05,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:05,070 INFO L87 Difference]: Start difference. First operand 1658 states and 2063 transitions. Second operand 3 states. [2020-09-25 14:34:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:05,234 INFO L93 Difference]: Finished difference Result 4540 states and 5744 transitions. [2020-09-25 14:34:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:34:05,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-09-25 14:34:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:05,249 INFO L225 Difference]: With dead ends: 4540 [2020-09-25 14:34:05,249 INFO L226 Difference]: Without dead ends: 3075 [2020-09-25 14:34:05,254 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 14:34:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2020-09-25 14:34:05,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 3073. [2020-09-25 14:34:05,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3073 states. [2020-09-25 14:34:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 3841 transitions. [2020-09-25 14:34:05,348 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 3841 transitions. Word has length 200 [2020-09-25 14:34:05,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:05,349 INFO L479 AbstractCegarLoop]: Abstraction has 3073 states and 3841 transitions. [2020-09-25 14:34:05,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:34:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 3841 transitions. [2020-09-25 14:34:05,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 14:34:05,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:05,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:05,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 14:34:05,355 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:05,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:05,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1292077120, now seen corresponding path program 1 times [2020-09-25 14:34:05,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:05,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335258931] [2020-09-25 14:34:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:05,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:06,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:06,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 14:34:06,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:34:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 811 [2020-09-25 14:34:06,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:06,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:34:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-25 14:34:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:34:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:06,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:06,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:06,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:06,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:06,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:06,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:06,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:34:06,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335258931] [2020-09-25 14:34:06,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:06,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:34:06,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800715636] [2020-09-25 14:34:06,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:34:06,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:06,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:34:06,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:34:06,278 INFO L87 Difference]: Start difference. First operand 3073 states and 3841 transitions. Second operand 4 states. [2020-09-25 14:34:06,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:06,545 INFO L93 Difference]: Finished difference Result 6337 states and 7912 transitions. [2020-09-25 14:34:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:34:06,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2020-09-25 14:34:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:06,562 INFO L225 Difference]: With dead ends: 6337 [2020-09-25 14:34:06,562 INFO L226 Difference]: Without dead ends: 3427 [2020-09-25 14:34:06,568 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 14:34:06,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2020-09-25 14:34:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 3257. [2020-09-25 14:34:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3257 states. [2020-09-25 14:34:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 4055 transitions. [2020-09-25 14:34:06,710 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 4055 transitions. Word has length 200 [2020-09-25 14:34:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:06,710 INFO L479 AbstractCegarLoop]: Abstraction has 3257 states and 4055 transitions. [2020-09-25 14:34:06,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:34:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 4055 transitions. [2020-09-25 14:34:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 14:34:06,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:06,719 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 14:34:06,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 14:34:06,720 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:06,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:06,721 INFO L82 PathProgramCache]: Analyzing trace with hash 595350838, now seen corresponding path program 1 times [2020-09-25 14:34:06,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:06,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769075051] [2020-09-25 14:34:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:06,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:06,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:06,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 14:34:06,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:06,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 14:34:06,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:06,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:06,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:34:06,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 14:34:06,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:34:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:07,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:07,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:07,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:07,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:07,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:07,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:07,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:07,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:07,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:07,095 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 14:34:07,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769075051] [2020-09-25 14:34:07,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:07,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:34:07,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023654120] [2020-09-25 14:34:07,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:34:07,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:07,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:34:07,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:34:07,098 INFO L87 Difference]: Start difference. First operand 3257 states and 4055 transitions. Second operand 4 states. [2020-09-25 14:34:07,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:07,289 INFO L93 Difference]: Finished difference Result 11113 states and 13917 transitions. [2020-09-25 14:34:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:34:07,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-09-25 14:34:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:07,344 INFO L225 Difference]: With dead ends: 11113 [2020-09-25 14:34:07,344 INFO L226 Difference]: Without dead ends: 8049 [2020-09-25 14:34:07,354 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 14:34:07,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8049 states. [2020-09-25 14:34:07,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8049 to 4791. [2020-09-25 14:34:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4791 states. [2020-09-25 14:34:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4791 states to 4791 states and 5888 transitions. [2020-09-25 14:34:07,662 INFO L78 Accepts]: Start accepts. Automaton has 4791 states and 5888 transitions. Word has length 201 [2020-09-25 14:34:07,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:07,663 INFO L479 AbstractCegarLoop]: Abstraction has 4791 states and 5888 transitions. [2020-09-25 14:34:07,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:34:07,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4791 states and 5888 transitions. [2020-09-25 14:34:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 14:34:07,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:07,672 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 14:34:07,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 14:34:07,672 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:07,673 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-09-25 14:34:07,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:07,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902160282] [2020-09-25 14:34:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:34:07,704 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:34:07,704 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:34:07,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 14:34:07,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:34:07 BoogieIcfgContainer [2020-09-25 14:34:07,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:34:07,769 INFO L168 Benchmark]: Toolchain (without parser) took 26055.10 ms. Allocated memory was 139.5 MB in the beginning and 579.3 MB in the end (delta: 439.9 MB). Free memory was 102.4 MB in the beginning and 454.7 MB in the end (delta: -352.3 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:07,770 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 14:34:07,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.82 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 177.3 MB in the end (delta: -75.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:07,778 INFO L168 Benchmark]: Boogie Preprocessor took 73.77 ms. Allocated memory is still 202.4 MB. Free memory was 177.3 MB in the beginning and 174.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:07,781 INFO L168 Benchmark]: RCFGBuilder took 990.54 ms. Allocated memory is still 202.4 MB. Free memory was 174.2 MB in the beginning and 103.2 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:07,782 INFO L168 Benchmark]: TraceAbstraction took 24385.07 ms. Allocated memory was 202.4 MB in the beginning and 579.3 MB in the end (delta: 377.0 MB). Free memory was 102.5 MB in the beginning and 454.7 MB in the end (delta: -352.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:07,790 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 596.82 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 177.3 MB in the end (delta: -75.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.77 ms. Allocated memory is still 202.4 MB. Free memory was 177.3 MB in the beginning and 174.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 990.54 ms. Allocated memory is still 202.4 MB. Free memory was 174.2 MB in the beginning and 103.2 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24385.07 ms. Allocated memory was 202.4 MB in the beginning and 579.3 MB in the end (delta: 377.0 MB). Free memory was 102.5 MB in the beginning and 454.7 MB in the end (delta: -352.2 MB). Peak memory consumption was 24.8 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: 24.2s, OverallIterations: 18, TraceHistogramMax: 2, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8075 SDtfs, 7331 SDslu, 9513 SDs, 0 SdLazy, 1813 SolverSat, 210 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4791occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 4445 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 3375 NumberOfCodeBlocks, 3375 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3157 ConstructedInterpolants, 0 QuantifiedInterpolants, 956711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 178/178 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...