/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=0.3 --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 12:18:20,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:18:20,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:18:20,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:18:20,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:18:20,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:18:20,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:18:20,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:18:20,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:18:20,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:18:20,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:18:20,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:18:20,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:18:20,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:18:20,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:18:20,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:18:20,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:18:20,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:18:20,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:18:20,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:18:20,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:18:20,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:18:20,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:18:20,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:18:20,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:18:20,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:18:20,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:18:20,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:18:20,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:18:20,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:18:20,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:18:20,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:18:20,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:18:20,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:18:20,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:18:20,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:18:20,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:18:20,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:18:20,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:18:20,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:18:20,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:18:20,135 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 12:18:20,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:18:20,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:18:20,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:18:20,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:18:20,172 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:18:20,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:18:20,173 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:18:20,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:18:20,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:18:20,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:18:20,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:18:20,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:18:20,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:18:20,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:18:20,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:18:20,175 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:18:20,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:18:20,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:18:20,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:18:20,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:18:20,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:18:20,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:18:20,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:18:20,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:18:20,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:18:20,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:18:20,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:18:20,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:18:20,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:18:20,178 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:18:20,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:18:20,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:18:20,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:18:20,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:18:20,628 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:18:20,629 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 12:18:20,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/440ddeca0/0dab449f1a38478686680b5974269dea/FLAGb46a17156 [2020-09-25 12:18:21,244 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:18:21,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 12:18:21,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/440ddeca0/0dab449f1a38478686680b5974269dea/FLAGb46a17156 [2020-09-25 12:18:21,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/440ddeca0/0dab449f1a38478686680b5974269dea [2020-09-25 12:18:21,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:18:21,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:18:21,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:18:21,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:18:21,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:18:21,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:18:21" (1/1) ... [2020-09-25 12:18:21,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:21, skipping insertion in model container [2020-09-25 12:18:21,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:18:21" (1/1) ... [2020-09-25 12:18:21,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:18:21,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:18:21,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:18:21,936 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:18:22,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:18:22,124 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:18:22,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:22 WrapperNode [2020-09-25 12:18:22,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:18:22,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:18:22,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:18:22,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:18:22,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:22" (1/1) ... [2020-09-25 12:18:22,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:22" (1/1) ... [2020-09-25 12:18:22,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:22" (1/1) ... [2020-09-25 12:18:22,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:22" (1/1) ... [2020-09-25 12:18:22,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:22" (1/1) ... [2020-09-25 12:18:22,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:22" (1/1) ... [2020-09-25 12:18:22,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:22" (1/1) ... [2020-09-25 12:18:22,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:18:22,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:18:22,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:18:22,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:18:22,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:22" (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 12:18:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:18:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:18:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 12:18:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:18:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:18:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 12:18:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:18:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 12:18:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 12:18:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:18:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:18:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:18:22,503 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 12:18:23,209 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 12:18:23,209 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 12:18:23,227 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:18:23,227 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:18:23,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:18:23 BoogieIcfgContainer [2020-09-25 12:18:23,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:18:23,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:18:23,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:18:23,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:18:23,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:18:21" (1/3) ... [2020-09-25 12:18:23,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d47639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:18:23, skipping insertion in model container [2020-09-25 12:18:23,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:22" (2/3) ... [2020-09-25 12:18:23,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d47639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:18:23, skipping insertion in model container [2020-09-25 12:18:23,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:18:23" (3/3) ... [2020-09-25 12:18:23,246 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-09-25 12:18:23,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:18:23,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:18:23,292 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:18:23,325 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:18:23,325 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:18:23,325 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:18:23,325 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:18:23,326 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:18:23,326 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:18:23,326 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:18:23,326 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:18:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-09-25 12:18:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 12:18:23,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:23,374 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 12:18:23,374 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:23,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:23,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-09-25 12:18:23,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:23,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403669674] [2020-09-25 12:18:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:23,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:24,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:25,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:25,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 12:18:25,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:25,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-09-25 12:18:25,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:25,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:18:25,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:18:25,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 12:18:25,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:18:25,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:25,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:25,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:25,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:25,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:25,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:25,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:25,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:25,359 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 12:18:25,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403669674] [2020-09-25 12:18:25,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:25,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:18:25,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614719937] [2020-09-25 12:18:25,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:18:25,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:25,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:18:25,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:18:25,390 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 6 states. [2020-09-25 12:18:25,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:25,926 INFO L93 Difference]: Finished difference Result 802 states and 1073 transitions. [2020-09-25 12:18:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:18:25,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-25 12:18:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:25,965 INFO L225 Difference]: With dead ends: 802 [2020-09-25 12:18:25,965 INFO L226 Difference]: Without dead ends: 459 [2020-09-25 12:18:25,978 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 12:18:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-09-25 12:18:26,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2020-09-25 12:18:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-09-25 12:18:26,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 535 transitions. [2020-09-25 12:18:26,120 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 535 transitions. Word has length 158 [2020-09-25 12:18:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:26,124 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 535 transitions. [2020-09-25 12:18:26,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:18:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 535 transitions. [2020-09-25 12:18:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:18:26,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:26,136 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 12:18:26,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:18:26,140 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:26,140 INFO L82 PathProgramCache]: Analyzing trace with hash 796395907, now seen corresponding path program 1 times [2020-09-25 12:18:26,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:26,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499028353] [2020-09-25 12:18:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:26,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:26,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:27,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:28,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:28,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 12:18:28,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:18:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1870 [2020-09-25 12:18:28,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:28,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:18:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:18:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 12:18:28,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:28,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:28,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:28,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:28,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:28,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:28,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:28,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:28,181 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 12:18:28,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499028353] [2020-09-25 12:18:28,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:28,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:18:28,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857748413] [2020-09-25 12:18:28,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:18:28,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:28,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:18:28,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:18:28,185 INFO L87 Difference]: Start difference. First operand 444 states and 535 transitions. Second operand 6 states. [2020-09-25 12:18:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:28,471 INFO L93 Difference]: Finished difference Result 783 states and 972 transitions. [2020-09-25 12:18:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:18:28,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-25 12:18:28,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:28,479 INFO L225 Difference]: With dead ends: 783 [2020-09-25 12:18:28,479 INFO L226 Difference]: Without dead ends: 482 [2020-09-25 12:18:28,484 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 12:18:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-25 12:18:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 469. [2020-09-25 12:18:28,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-09-25 12:18:28,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 568 transitions. [2020-09-25 12:18:28,528 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 568 transitions. Word has length 166 [2020-09-25 12:18:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:28,529 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 568 transitions. [2020-09-25 12:18:28,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:18:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 568 transitions. [2020-09-25 12:18:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 12:18:28,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:28,534 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 12:18:28,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:18:28,534 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:28,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:28,535 INFO L82 PathProgramCache]: Analyzing trace with hash 467731815, now seen corresponding path program 1 times [2020-09-25 12:18:28,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:28,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704937192] [2020-09-25 12:18:28,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:28,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:29,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-25 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:18:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:18:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 12:18:29,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:29,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:29,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:29,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:29,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:29,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:29,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:29,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:29,708 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 12:18:29,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704937192] [2020-09-25 12:18:29,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:29,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:18:29,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953016480] [2020-09-25 12:18:29,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:18:29,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:29,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:18:29,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:18:29,711 INFO L87 Difference]: Start difference. First operand 469 states and 568 transitions. Second operand 7 states. [2020-09-25 12:18:29,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:29,996 INFO L93 Difference]: Finished difference Result 852 states and 1065 transitions. [2020-09-25 12:18:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:18:29,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-25 12:18:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:30,000 INFO L225 Difference]: With dead ends: 852 [2020-09-25 12:18:30,000 INFO L226 Difference]: Without dead ends: 526 [2020-09-25 12:18:30,002 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 12:18:30,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-09-25 12:18:30,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 491. [2020-09-25 12:18:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-25 12:18:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 598 transitions. [2020-09-25 12:18:30,017 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 598 transitions. Word has length 167 [2020-09-25 12:18:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:30,018 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 598 transitions. [2020-09-25 12:18:30,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:18:30,018 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 598 transitions. [2020-09-25 12:18:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 12:18:30,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:30,021 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 12:18:30,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:18:30,021 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:30,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1852412155, now seen corresponding path program 1 times [2020-09-25 12:18:30,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:30,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647880609] [2020-09-25 12:18:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:30,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:30,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:31,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:31,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 12:18:31,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:18:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-09-25 12:18:31,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:31,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-25 12:18:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:18:31,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:31,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:31,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:31,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:31,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:31,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:31,203 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 12:18:31,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647880609] [2020-09-25 12:18:31,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:31,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:31,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798529416] [2020-09-25 12:18:31,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:31,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:31,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:31,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:31,206 INFO L87 Difference]: Start difference. First operand 491 states and 598 transitions. Second operand 3 states. [2020-09-25 12:18:31,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:31,258 INFO L93 Difference]: Finished difference Result 855 states and 1066 transitions. [2020-09-25 12:18:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:31,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2020-09-25 12:18:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:31,262 INFO L225 Difference]: With dead ends: 855 [2020-09-25 12:18:31,262 INFO L226 Difference]: Without dead ends: 507 [2020-09-25 12:18:31,263 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 12:18:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-25 12:18:31,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2020-09-25 12:18:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-25 12:18:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 614 transitions. [2020-09-25 12:18:31,280 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 614 transitions. Word has length 180 [2020-09-25 12:18:31,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:31,280 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 614 transitions. [2020-09-25 12:18:31,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:31,281 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 614 transitions. [2020-09-25 12:18:31,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 12:18:31,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:31,283 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 12:18:31,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:18:31,284 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:31,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:31,284 INFO L82 PathProgramCache]: Analyzing trace with hash -309243059, now seen corresponding path program 1 times [2020-09-25 12:18:31,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:31,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177559812] [2020-09-25 12:18:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:31,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:31,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:31,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:31,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 12:18:32,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:18:32,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-09-25 12:18:32,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-09-25 12:18:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 12:18:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:32,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:32,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:32,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:32,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:18:32,191 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 12:18:32,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177559812] [2020-09-25 12:18:32,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:32,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:32,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962600989] [2020-09-25 12:18:32,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:32,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:32,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:32,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:32,195 INFO L87 Difference]: Start difference. First operand 507 states and 614 transitions. Second operand 3 states. [2020-09-25 12:18:32,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:32,218 INFO L93 Difference]: Finished difference Result 855 states and 1065 transitions. [2020-09-25 12:18:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:32,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-09-25 12:18:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:32,222 INFO L225 Difference]: With dead ends: 855 [2020-09-25 12:18:32,222 INFO L226 Difference]: Without dead ends: 507 [2020-09-25 12:18:32,223 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 12:18:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-25 12:18:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2020-09-25 12:18:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-25 12:18:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 610 transitions. [2020-09-25 12:18:32,245 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 610 transitions. Word has length 181 [2020-09-25 12:18:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:32,245 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 610 transitions. [2020-09-25 12:18:32,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 610 transitions. [2020-09-25 12:18:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 12:18:32,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:32,251 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 12:18:32,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:18:32,252 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:32,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1474841658, now seen corresponding path program 1 times [2020-09-25 12:18:32,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:32,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075468168] [2020-09-25 12:18:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 12:18:32,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:32,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-09-25 12:18:32,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:32,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-09-25 12:18:32,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:18:32,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:32,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:32,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:32,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:32,969 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 12:18:32,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075468168] [2020-09-25 12:18:32,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:32,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:32,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679999394] [2020-09-25 12:18:32,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:32,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:32,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:32,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:32,972 INFO L87 Difference]: Start difference. First operand 507 states and 610 transitions. Second operand 3 states. [2020-09-25 12:18:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:33,005 INFO L93 Difference]: Finished difference Result 862 states and 1065 transitions. [2020-09-25 12:18:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:33,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-09-25 12:18:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:33,009 INFO L225 Difference]: With dead ends: 862 [2020-09-25 12:18:33,009 INFO L226 Difference]: Without dead ends: 514 [2020-09-25 12:18:33,010 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 12:18:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-09-25 12:18:33,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 513. [2020-09-25 12:18:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 12:18:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 613 transitions. [2020-09-25 12:18:33,025 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 613 transitions. Word has length 182 [2020-09-25 12:18:33,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:33,025 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 613 transitions. [2020-09-25 12:18:33,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 613 transitions. [2020-09-25 12:18:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 12:18:33,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:33,028 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 12:18:33,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:18:33,029 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:33,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1516170884, now seen corresponding path program 1 times [2020-09-25 12:18:33,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:33,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413437370] [2020-09-25 12:18:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:33,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 12:18:33,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:18:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-09-25 12:18:33,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:33,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 12:18:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:18:33,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:33,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:33,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:33,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:33,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:33,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:33,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:33,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:33,867 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 12:18:33,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413437370] [2020-09-25 12:18:33,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:33,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:33,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771863689] [2020-09-25 12:18:33,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:33,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:33,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:33,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:33,869 INFO L87 Difference]: Start difference. First operand 513 states and 613 transitions. Second operand 3 states. [2020-09-25 12:18:33,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:33,901 INFO L93 Difference]: Finished difference Result 1226 states and 1509 transitions. [2020-09-25 12:18:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:33,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-09-25 12:18:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:33,907 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 12:18:33,907 INFO L226 Difference]: Without dead ends: 872 [2020-09-25 12:18:33,910 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 12:18:33,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-09-25 12:18:33,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2020-09-25 12:18:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-09-25 12:18:33,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1054 transitions. [2020-09-25 12:18:33,940 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1054 transitions. Word has length 185 [2020-09-25 12:18:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:33,941 INFO L479 AbstractCegarLoop]: Abstraction has 870 states and 1054 transitions. [2020-09-25 12:18:33,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1054 transitions. [2020-09-25 12:18:33,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 12:18:33,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:33,945 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 12:18:33,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:18:33,945 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:33,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1645719778, now seen corresponding path program 1 times [2020-09-25 12:18:33,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:33,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303810846] [2020-09-25 12:18:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:35,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 12:18:35,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:18:35,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1329 [2020-09-25 12:18:35,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:35,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:35,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:35,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-09-25 12:18:35,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:18:35,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:35,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:35,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:35,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:35,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:35,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:35,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:35,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:35,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:35,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:35,444 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 12:18:35,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303810846] [2020-09-25 12:18:35,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:35,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:35,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304156651] [2020-09-25 12:18:35,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:35,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:35,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:35,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:35,449 INFO L87 Difference]: Start difference. First operand 870 states and 1054 transitions. Second operand 3 states. [2020-09-25 12:18:35,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:35,512 INFO L93 Difference]: Finished difference Result 2271 states and 2812 transitions. [2020-09-25 12:18:35,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:35,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-25 12:18:35,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:35,524 INFO L225 Difference]: With dead ends: 2271 [2020-09-25 12:18:35,524 INFO L226 Difference]: Without dead ends: 1577 [2020-09-25 12:18:35,526 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 12:18:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2020-09-25 12:18:35,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1235. [2020-09-25 12:18:35,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2020-09-25 12:18:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1509 transitions. [2020-09-25 12:18:35,605 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1509 transitions. Word has length 187 [2020-09-25 12:18:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:35,606 INFO L479 AbstractCegarLoop]: Abstraction has 1235 states and 1509 transitions. [2020-09-25 12:18:35,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1509 transitions. [2020-09-25 12:18:35,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 12:18:35,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:35,610 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 12:18:35,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:18:35,611 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:35,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:35,611 INFO L82 PathProgramCache]: Analyzing trace with hash -293442268, now seen corresponding path program 1 times [2020-09-25 12:18:35,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:35,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143978678] [2020-09-25 12:18:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:36,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 12:18:36,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:18:36,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-09-25 12:18:36,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:36,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:18:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 12:18:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 12:18:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:36,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:36,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:36,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:36,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:36,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:36,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:36,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:36,475 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 12:18:36,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143978678] [2020-09-25 12:18:36,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:36,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:36,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177393343] [2020-09-25 12:18:36,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:36,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:36,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:36,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:36,478 INFO L87 Difference]: Start difference. First operand 1235 states and 1509 transitions. Second operand 4 states. [2020-09-25 12:18:36,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:36,605 INFO L93 Difference]: Finished difference Result 4399 states and 5476 transitions. [2020-09-25 12:18:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:36,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-09-25 12:18:36,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:36,627 INFO L225 Difference]: With dead ends: 4399 [2020-09-25 12:18:36,628 INFO L226 Difference]: Without dead ends: 3357 [2020-09-25 12:18:36,632 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 12:18:36,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2020-09-25 12:18:36,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 2291. [2020-09-25 12:18:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-09-25 12:18:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2808 transitions. [2020-09-25 12:18:36,763 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2808 transitions. Word has length 187 [2020-09-25 12:18:36,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:36,764 INFO L479 AbstractCegarLoop]: Abstraction has 2291 states and 2808 transitions. [2020-09-25 12:18:36,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2808 transitions. [2020-09-25 12:18:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 12:18:36,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:36,770 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 12:18:36,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:18:36,771 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:36,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:36,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1498778359, now seen corresponding path program 1 times [2020-09-25 12:18:36,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:36,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036620467] [2020-09-25 12:18:36,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:37,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 12:18:37,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:18:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-09-25 12:18:37,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:37,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 12:18:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:18:37,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:37,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:37,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:37,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:37,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:37,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:37,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:37,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:37,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:37,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:37,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:37,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:37,353 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 12:18:37,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036620467] [2020-09-25 12:18:37,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:37,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:37,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164649185] [2020-09-25 12:18:37,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:37,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:37,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:37,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:37,356 INFO L87 Difference]: Start difference. First operand 2291 states and 2808 transitions. Second operand 3 states. [2020-09-25 12:18:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:37,632 INFO L93 Difference]: Finished difference Result 4703 states and 5958 transitions. [2020-09-25 12:18:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:37,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-25 12:18:37,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:37,646 INFO L225 Difference]: With dead ends: 4703 [2020-09-25 12:18:37,646 INFO L226 Difference]: Without dead ends: 2625 [2020-09-25 12:18:37,651 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 12:18:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2020-09-25 12:18:37,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2533. [2020-09-25 12:18:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2533 states. [2020-09-25 12:18:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 3155 transitions. [2020-09-25 12:18:37,756 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 3155 transitions. Word has length 187 [2020-09-25 12:18:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:37,757 INFO L479 AbstractCegarLoop]: Abstraction has 2533 states and 3155 transitions. [2020-09-25 12:18:37,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 3155 transitions. [2020-09-25 12:18:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 12:18:37,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:37,762 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 12:18:37,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:18:37,763 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:37,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:37,763 INFO L82 PathProgramCache]: Analyzing trace with hash 340252365, now seen corresponding path program 1 times [2020-09-25 12:18:37,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:37,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653078971] [2020-09-25 12:18:37,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:38,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:38,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 12:18:38,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:18:38,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-09-25 12:18:38,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:38,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-09-25 12:18:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:18:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:18:38,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:38,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:38,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:38,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:38,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:38,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:38,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:38,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:38,701 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 12:18:38,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653078971] [2020-09-25 12:18:38,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:38,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:38,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309623541] [2020-09-25 12:18:38,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:38,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:38,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:38,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:38,705 INFO L87 Difference]: Start difference. First operand 2533 states and 3155 transitions. Second operand 4 states. [2020-09-25 12:18:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:39,203 INFO L93 Difference]: Finished difference Result 6618 states and 8488 transitions. [2020-09-25 12:18:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:39,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-09-25 12:18:39,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:39,223 INFO L225 Difference]: With dead ends: 6618 [2020-09-25 12:18:39,223 INFO L226 Difference]: Without dead ends: 4334 [2020-09-25 12:18:39,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2020-09-25 12:18:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 2839. [2020-09-25 12:18:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2839 states. [2020-09-25 12:18:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 3483 transitions. [2020-09-25 12:18:39,333 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 3483 transitions. Word has length 191 [2020-09-25 12:18:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:39,334 INFO L479 AbstractCegarLoop]: Abstraction has 2839 states and 3483 transitions. [2020-09-25 12:18:39,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:39,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 3483 transitions. [2020-09-25 12:18:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 12:18:39,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:39,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:39,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:18:39,340 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:39,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1187027627, now seen corresponding path program 1 times [2020-09-25 12:18:39,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:39,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420694978] [2020-09-25 12:18:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:39,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:39,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:39,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 12:18:39,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:18:39,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-09-25 12:18:39,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:39,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 12:18:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:18:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:39,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:39,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:39,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:39,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:39,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:39,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:39,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:39,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:39,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:39,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:39,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:18:39,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420694978] [2020-09-25 12:18:39,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:39,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:39,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616986867] [2020-09-25 12:18:39,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:39,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:39,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:39,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:39,837 INFO L87 Difference]: Start difference. First operand 2839 states and 3483 transitions. Second operand 4 states. [2020-09-25 12:18:40,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:40,281 INFO L93 Difference]: Finished difference Result 7071 states and 8782 transitions. [2020-09-25 12:18:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:40,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2020-09-25 12:18:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:40,300 INFO L225 Difference]: With dead ends: 7071 [2020-09-25 12:18:40,300 INFO L226 Difference]: Without dead ends: 4481 [2020-09-25 12:18:40,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:40,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2020-09-25 12:18:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 2979. [2020-09-25 12:18:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2979 states. [2020-09-25 12:18:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 3633 transitions. [2020-09-25 12:18:40,414 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 3633 transitions. Word has length 193 [2020-09-25 12:18:40,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:40,414 INFO L479 AbstractCegarLoop]: Abstraction has 2979 states and 3633 transitions. [2020-09-25 12:18:40,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:40,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 3633 transitions. [2020-09-25 12:18:40,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 12:18:40,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:40,418 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 12:18:40,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:18:40,418 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:40,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:40,419 INFO L82 PathProgramCache]: Analyzing trace with hash -912264382, now seen corresponding path program 1 times [2020-09-25 12:18:40,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:40,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23297824] [2020-09-25 12:18:40,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:40,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 12:18:40,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 12:18:40,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:40,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 12:18:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:18:40,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:40,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:40,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:40,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:40,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:40,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:40,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:40,610 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 12:18:40,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23297824] [2020-09-25 12:18:40,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:40,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:40,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695336483] [2020-09-25 12:18:40,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:40,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:40,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:40,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:40,613 INFO L87 Difference]: Start difference. First operand 2979 states and 3633 transitions. Second operand 3 states. [2020-09-25 12:18:40,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:40,708 INFO L93 Difference]: Finished difference Result 6016 states and 7358 transitions. [2020-09-25 12:18:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:40,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-09-25 12:18:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:40,722 INFO L225 Difference]: With dead ends: 6016 [2020-09-25 12:18:40,723 INFO L226 Difference]: Without dead ends: 3286 [2020-09-25 12:18:40,732 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 12:18:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2020-09-25 12:18:40,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 3284. [2020-09-25 12:18:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3284 states. [2020-09-25 12:18:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 3973 transitions. [2020-09-25 12:18:40,848 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 3973 transitions. Word has length 200 [2020-09-25 12:18:40,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:40,849 INFO L479 AbstractCegarLoop]: Abstraction has 3284 states and 3973 transitions. [2020-09-25 12:18:40,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:40,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 3973 transitions. [2020-09-25 12:18:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 12:18:40,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:40,855 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 12:18:40,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 12:18:40,856 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:40,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:40,857 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-09-25 12:18:40,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:40,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948265700] [2020-09-25 12:18:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 12:18:40,886 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 12:18:40,886 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 12:18:40,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 12:18:40,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:18:40 BoogieIcfgContainer [2020-09-25 12:18:40,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:18:40,960 INFO L168 Benchmark]: Toolchain (without parser) took 19396.70 ms. Allocated memory was 141.0 MB in the beginning and 491.8 MB in the end (delta: 350.7 MB). Free memory was 102.8 MB in the beginning and 165.0 MB in the end (delta: -62.2 MB). Peak memory consumption was 288.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:40,961 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 12:18:40,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.99 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 180.9 MB in the end (delta: -78.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:40,963 INFO L168 Benchmark]: Boogie Preprocessor took 64.27 ms. Allocated memory is still 205.5 MB. Free memory was 180.9 MB in the beginning and 178.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:40,974 INFO L168 Benchmark]: RCFGBuilder took 1045.81 ms. Allocated memory is still 205.5 MB. Free memory was 178.3 MB in the beginning and 107.0 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:40,975 INFO L168 Benchmark]: TraceAbstraction took 17716.96 ms. Allocated memory was 205.5 MB in the beginning and 491.8 MB in the end (delta: 286.3 MB). Free memory was 106.3 MB in the beginning and 165.0 MB in the end (delta: -58.7 MB). Peak memory consumption was 227.6 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:40,982 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 556.99 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 180.9 MB in the end (delta: -78.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.27 ms. Allocated memory is still 205.5 MB. Free memory was 180.9 MB in the beginning and 178.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1045.81 ms. Allocated memory is still 205.5 MB. Free memory was 178.3 MB in the beginning and 107.0 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17716.96 ms. Allocated memory was 205.5 MB in the beginning and 491.8 MB in the end (delta: 286.3 MB). Free memory was 106.3 MB in the beginning and 165.0 MB in the end (delta: -58.7 MB). Peak memory consumption was 227.6 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: 17.5s, OverallIterations: 14, TraceHistogramMax: 2, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7280 SDtfs, 6303 SDslu, 8560 SDs, 0 SdLazy, 1270 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3284occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 4565 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 2565 NumberOfCodeBlocks, 2565 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2351 ConstructedInterpolants, 0 QuantifiedInterpolants, 756125 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 136/136 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...