/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:33:39,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:33:39,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:33:39,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:33:39,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:33:39,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:33:39,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:33:39,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:33:39,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:33:39,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:33:39,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:33:39,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:33:39,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:33:39,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:33:39,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:33:39,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:33:39,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:33:39,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:33:39,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:33:39,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:33:39,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:33:39,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:33:39,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:33:39,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:33:39,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:33:39,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:33:39,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:33:39,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:33:39,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:33:39,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:33:39,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:33:39,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:33:39,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:33:39,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:33:39,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:33:39,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:33:39,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:33:39,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:33:39,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:33:39,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:33:39,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:33:39,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:33:39,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:33:39,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:33:39,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:33:39,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:33:39,318 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:33:39,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:33:39,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:33:39,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:33:39,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:33:39,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:33:39,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:33:39,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:33:39,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:33:39,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:33:39,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:33:39,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:33:39,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:33:39,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:33:39,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:33:39,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:33:39,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:33:39,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:39,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:33:39,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:33:39,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:33:39,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:33:39,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:33:39,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:33:39,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:33:39,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:33:39,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:33:39,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:33:39,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:33:39,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:33:39,808 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:33:39,809 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 14:33:39,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/026c70cdd/1d32fc830e4a48a5983e27cfa0ee4286/FLAGd247c5e4a [2020-09-25 14:33:40,492 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:33:40,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 14:33:40,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/026c70cdd/1d32fc830e4a48a5983e27cfa0ee4286/FLAGd247c5e4a [2020-09-25 14:33:40,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/026c70cdd/1d32fc830e4a48a5983e27cfa0ee4286 [2020-09-25 14:33:40,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:33:40,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:33:40,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:40,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:33:40,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:33:40,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:40" (1/1) ... [2020-09-25 14:33:40,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5f9fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:40, skipping insertion in model container [2020-09-25 14:33:40,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:40" (1/1) ... [2020-09-25 14:33:40,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:33:40,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:33:41,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:41,221 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:33:41,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:41,413 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:33:41,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41 WrapperNode [2020-09-25 14:33:41,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:41,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:33:41,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:33:41,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:33:41,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41" (1/1) ... [2020-09-25 14:33:41,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41" (1/1) ... [2020-09-25 14:33:41,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41" (1/1) ... [2020-09-25 14:33:41,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41" (1/1) ... [2020-09-25 14:33:41,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41" (1/1) ... [2020-09-25 14:33:41,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41" (1/1) ... [2020-09-25 14:33:41,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41" (1/1) ... [2020-09-25 14:33:41,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:33:41,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:33:41,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:33:41,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:33:41,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:33:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:33:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 14:33:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:33:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:33:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:33:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:33:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 14:33:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 14:33:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:33:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:33:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:33:41,822 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:42,497 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 14:33:42,498 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 14:33:42,515 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:33:42,516 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:33:42,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:42 BoogieIcfgContainer [2020-09-25 14:33:42,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:33:42,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:33:42,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:33:42,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:33:42,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:33:40" (1/3) ... [2020-09-25 14:33:42,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b048d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:42, skipping insertion in model container [2020-09-25 14:33:42,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:41" (2/3) ... [2020-09-25 14:33:42,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b048d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:42, skipping insertion in model container [2020-09-25 14:33:42,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:42" (3/3) ... [2020-09-25 14:33:42,536 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-09-25 14:33:42,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:33:42,559 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:33:42,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:33:42,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:33:42,613 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:33:42,613 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:33:42,614 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:33:42,614 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:33:42,614 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:33:42,614 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:33:42,614 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:33:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states. [2020-09-25 14:33:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 14:33:42,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:42,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:42,670 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:42,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:42,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1103530067, now seen corresponding path program 1 times [2020-09-25 14:33:42,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:42,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235681648] [2020-09-25 14:33:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:43,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:44,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:44,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:44,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 14:33:44,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1543 [2020-09-25 14:33:44,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:44,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:33:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 14:33:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:33:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:44,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:44,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:44,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:44,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:44,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:44,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:44,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:44,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:44,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235681648] [2020-09-25 14:33:44,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:44,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:33:44,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263271930] [2020-09-25 14:33:44,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:33:44,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:44,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:33:44,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:33:44,715 INFO L87 Difference]: Start difference. First operand 440 states. Second operand 6 states. [2020-09-25 14:33:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:45,147 INFO L93 Difference]: Finished difference Result 782 states and 1019 transitions. [2020-09-25 14:33:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:33:45,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-25 14:33:45,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:45,170 INFO L225 Difference]: With dead ends: 782 [2020-09-25 14:33:45,171 INFO L226 Difference]: Without dead ends: 441 [2020-09-25 14:33:45,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:33:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-09-25 14:33:45,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 430. [2020-09-25 14:33:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-09-25 14:33:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 515 transitions. [2020-09-25 14:33:45,263 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 515 transitions. Word has length 160 [2020-09-25 14:33:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:45,264 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 515 transitions. [2020-09-25 14:33:45,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:33:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 515 transitions. [2020-09-25 14:33:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 14:33:45,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:45,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:45,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:33:45,273 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash -466072829, now seen corresponding path program 1 times [2020-09-25 14:33:45,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:45,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324060928] [2020-09-25 14:33:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:45,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:46,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 14:33:46,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-09-25 14:33:46,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:46,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:33:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:33:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-25 14:33:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:46,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:46,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:46,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:46,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:46,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324060928] [2020-09-25 14:33:46,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:46,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:33:46,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028842877] [2020-09-25 14:33:46,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:33:46,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:46,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:33:46,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:33:46,898 INFO L87 Difference]: Start difference. First operand 430 states and 515 transitions. Second operand 7 states. [2020-09-25 14:33:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:47,391 INFO L93 Difference]: Finished difference Result 876 states and 1103 transitions. [2020-09-25 14:33:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:33:47,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-25 14:33:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:47,397 INFO L225 Difference]: With dead ends: 876 [2020-09-25 14:33:47,397 INFO L226 Difference]: Without dead ends: 574 [2020-09-25 14:33:47,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:33:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-09-25 14:33:47,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 539. [2020-09-25 14:33:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-25 14:33:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 645 transitions. [2020-09-25 14:33:47,426 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 645 transitions. Word has length 169 [2020-09-25 14:33:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:47,427 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 645 transitions. [2020-09-25 14:33:47,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:33:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 645 transitions. [2020-09-25 14:33:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 14:33:47,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:47,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:47,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:33:47,433 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:47,434 INFO L82 PathProgramCache]: Analyzing trace with hash -139011456, now seen corresponding path program 1 times [2020-09-25 14:33:47,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:47,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443027899] [2020-09-25 14:33:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:47,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:48,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:49,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:49,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 14:33:49,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:33:49,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1741 [2020-09-25 14:33:49,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:49,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-09-25 14:33:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:33:49,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:49,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:49,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:49,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:49,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:49,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:49,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 14:33:49,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443027899] [2020-09-25 14:33:49,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:49,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:49,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127622591] [2020-09-25 14:33:49,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:49,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:49,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:49,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:49,281 INFO L87 Difference]: Start difference. First operand 539 states and 645 transitions. Second operand 3 states. [2020-09-25 14:33:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:49,351 INFO L93 Difference]: Finished difference Result 954 states and 1163 transitions. [2020-09-25 14:33:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:49,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-09-25 14:33:49,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:49,356 INFO L225 Difference]: With dead ends: 954 [2020-09-25 14:33:49,356 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 14:33:49,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 14:33:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2020-09-25 14:33:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-09-25 14:33:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 661 transitions. [2020-09-25 14:33:49,377 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 661 transitions. Word has length 191 [2020-09-25 14:33:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:49,378 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 661 transitions. [2020-09-25 14:33:49,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 661 transitions. [2020-09-25 14:33:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 14:33:49,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:49,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:49,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:33:49,383 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:49,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:49,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1120886307, now seen corresponding path program 1 times [2020-09-25 14:33:49,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:49,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898739249] [2020-09-25 14:33:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:49,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:50,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 14:33:50,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:33:50,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-25 14:33:50,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:50,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 14:33:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:33:50,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:50,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:50,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:50,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:50,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:50,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:50,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:50,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:50,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:50,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898739249] [2020-09-25 14:33:50,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:50,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:50,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149785268] [2020-09-25 14:33:50,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:50,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:50,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:50,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:50,533 INFO L87 Difference]: Start difference. First operand 555 states and 661 transitions. Second operand 3 states. [2020-09-25 14:33:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:50,812 INFO L93 Difference]: Finished difference Result 1056 states and 1314 transitions. [2020-09-25 14:33:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:50,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-09-25 14:33:50,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:50,819 INFO L225 Difference]: With dead ends: 1056 [2020-09-25 14:33:50,819 INFO L226 Difference]: Without dead ends: 645 [2020-09-25 14:33:50,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-09-25 14:33:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 606. [2020-09-25 14:33:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-09-25 14:33:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 731 transitions. [2020-09-25 14:33:50,846 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 731 transitions. Word has length 192 [2020-09-25 14:33:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:50,847 INFO L479 AbstractCegarLoop]: Abstraction has 606 states and 731 transitions. [2020-09-25 14:33:50,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 731 transitions. [2020-09-25 14:33:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 14:33:50,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:50,851 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:50,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:33:50,851 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:50,852 INFO L82 PathProgramCache]: Analyzing trace with hash -312164926, now seen corresponding path program 1 times [2020-09-25 14:33:50,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:50,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893579054] [2020-09-25 14:33:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:50,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 14:33:51,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:51,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-09-25 14:33:51,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 14:33:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:33:51,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:51,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:33:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:51,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893579054] [2020-09-25 14:33:51,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:51,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:51,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936386708] [2020-09-25 14:33:51,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:51,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:51,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:51,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:51,710 INFO L87 Difference]: Start difference. First operand 606 states and 731 transitions. Second operand 3 states. [2020-09-25 14:33:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:51,820 INFO L93 Difference]: Finished difference Result 1492 states and 1858 transitions. [2020-09-25 14:33:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:51,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-09-25 14:33:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:51,828 INFO L225 Difference]: With dead ends: 1492 [2020-09-25 14:33:51,828 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 14:33:51,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:51,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 14:33:51,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2020-09-25 14:33:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-09-25 14:33:51,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1275 transitions. [2020-09-25 14:33:51,868 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1275 transitions. Word has length 197 [2020-09-25 14:33:51,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:51,868 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1275 transitions. [2020-09-25 14:33:51,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:51,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1275 transitions. [2020-09-25 14:33:51,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 14:33:51,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:51,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:51,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:33:51,874 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:51,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:51,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1190618208, now seen corresponding path program 1 times [2020-09-25 14:33:51,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:51,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498259453] [2020-09-25 14:33:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:52,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 14:33:52,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-25 14:33:52,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:52,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 14:33:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:33:52,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:52,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:52,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:52,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:52,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:52,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:52,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:52,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:33:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:52,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498259453] [2020-09-25 14:33:52,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:33:52,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 14:33:52,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646269762] [2020-09-25 14:33:52,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:33:52,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:52,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:33:52,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:33:52,530 INFO L87 Difference]: Start difference. First operand 1040 states and 1275 transitions. Second operand 4 states. [2020-09-25 14:33:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:52,967 INFO L93 Difference]: Finished difference Result 2279 states and 2876 transitions. [2020-09-25 14:33:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:33:52,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-09-25 14:33:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:52,977 INFO L225 Difference]: With dead ends: 2279 [2020-09-25 14:33:52,978 INFO L226 Difference]: Without dead ends: 1371 [2020-09-25 14:33:52,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:33:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-09-25 14:33:53,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1151. [2020-09-25 14:33:53,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-09-25 14:33:53,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1407 transitions. [2020-09-25 14:33:53,042 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1407 transitions. Word has length 198 [2020-09-25 14:33:53,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:53,043 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1407 transitions. [2020-09-25 14:33:53,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:33:53,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1407 transitions. [2020-09-25 14:33:53,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 14:33:53,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:53,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:53,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:33:53,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:53,052 INFO L82 PathProgramCache]: Analyzing trace with hash 27680960, now seen corresponding path program 1 times [2020-09-25 14:33:53,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:53,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481073489] [2020-09-25 14:33:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:54,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 14:33:54,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 934 [2020-09-25 14:33:54,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:54,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 14:33:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:33:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:54,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:54,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:54,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:54,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:54,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:33:54,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481073489] [2020-09-25 14:33:54,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:54,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:33:54,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358335209] [2020-09-25 14:33:54,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:33:54,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:54,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:33:54,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:33:54,140 INFO L87 Difference]: Start difference. First operand 1151 states and 1407 transitions. Second operand 4 states. [2020-09-25 14:33:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:54,433 INFO L93 Difference]: Finished difference Result 2248 states and 2789 transitions. [2020-09-25 14:33:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:33:54,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2020-09-25 14:33:54,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:54,440 INFO L225 Difference]: With dead ends: 2248 [2020-09-25 14:33:54,440 INFO L226 Difference]: Without dead ends: 1253 [2020-09-25 14:33:54,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:33:54,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-09-25 14:33:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1179. [2020-09-25 14:33:54,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-09-25 14:33:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1440 transitions. [2020-09-25 14:33:54,477 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1440 transitions. Word has length 206 [2020-09-25 14:33:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:54,478 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1440 transitions. [2020-09-25 14:33:54,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:33:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1440 transitions. [2020-09-25 14:33:54,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 14:33:54,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:54,482 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:54,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:33:54,483 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:54,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1819469783, now seen corresponding path program 1 times [2020-09-25 14:33:54,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:54,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347457516] [2020-09-25 14:33:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:54,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:55,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:55,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:55,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 14:33:55,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:33:55,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-09-25 14:33:55,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:55,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 14:33:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:33:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:55,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:55,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:55,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:55,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:55,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:33:55,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:55,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:33:55,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347457516] [2020-09-25 14:33:55,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:55,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:33:55,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366033744] [2020-09-25 14:33:55,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:33:55,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:55,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:33:55,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:33:55,702 INFO L87 Difference]: Start difference. First operand 1179 states and 1440 transitions. Second operand 4 states. [2020-09-25 14:33:56,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:56,021 INFO L93 Difference]: Finished difference Result 2263 states and 2799 transitions. [2020-09-25 14:33:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:33:56,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2020-09-25 14:33:56,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:56,031 INFO L225 Difference]: With dead ends: 2263 [2020-09-25 14:33:56,031 INFO L226 Difference]: Without dead ends: 1240 [2020-09-25 14:33:56,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:33:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-09-25 14:33:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1208. [2020-09-25 14:33:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2020-09-25 14:33:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1474 transitions. [2020-09-25 14:33:56,103 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1474 transitions. Word has length 207 [2020-09-25 14:33:56,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:56,104 INFO L479 AbstractCegarLoop]: Abstraction has 1208 states and 1474 transitions. [2020-09-25 14:33:56,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:33:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1474 transitions. [2020-09-25 14:33:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 14:33:56,109 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:56,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:56,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:33:56,110 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:56,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:56,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1252882748, now seen corresponding path program 1 times [2020-09-25 14:33:56,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:56,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653083705] [2020-09-25 14:33:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 14:33:57,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:33:57,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-09-25 14:33:57,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 14:33:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:33:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:57,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:57,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:57,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:33:57,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653083705] [2020-09-25 14:33:57,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:57,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:33:57,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770792162] [2020-09-25 14:33:57,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:33:57,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:57,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:33:57,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:33:57,901 INFO L87 Difference]: Start difference. First operand 1208 states and 1474 transitions. Second operand 4 states. [2020-09-25 14:33:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:58,153 INFO L93 Difference]: Finished difference Result 2511 states and 3101 transitions. [2020-09-25 14:33:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:33:58,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2020-09-25 14:33:58,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:58,160 INFO L225 Difference]: With dead ends: 2511 [2020-09-25 14:33:58,160 INFO L226 Difference]: Without dead ends: 1459 [2020-09-25 14:33:58,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:33:58,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2020-09-25 14:33:58,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1180. [2020-09-25 14:33:58,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-09-25 14:33:58,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1448 transitions. [2020-09-25 14:33:58,200 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1448 transitions. Word has length 207 [2020-09-25 14:33:58,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:58,200 INFO L479 AbstractCegarLoop]: Abstraction has 1180 states and 1448 transitions. [2020-09-25 14:33:58,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:33:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1448 transitions. [2020-09-25 14:33:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 14:33:58,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:58,204 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:58,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:33:58,204 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:58,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:58,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1752930940, now seen corresponding path program 1 times [2020-09-25 14:33:58,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:58,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292347424] [2020-09-25 14:33:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:59,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 14:33:59,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:33:59,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1593 [2020-09-25 14:33:59,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:59,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 14:33:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:33:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:59,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:59,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:59,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:59,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:59,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:59,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:33:59,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292347424] [2020-09-25 14:33:59,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:59,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:33:59,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829689064] [2020-09-25 14:33:59,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:33:59,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:59,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:33:59,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:33:59,921 INFO L87 Difference]: Start difference. First operand 1180 states and 1448 transitions. Second operand 4 states. [2020-09-25 14:34:00,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:00,272 INFO L93 Difference]: Finished difference Result 2455 states and 3071 transitions. [2020-09-25 14:34:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:34:00,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2020-09-25 14:34:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:00,283 INFO L225 Difference]: With dead ends: 2455 [2020-09-25 14:34:00,283 INFO L226 Difference]: Without dead ends: 1431 [2020-09-25 14:34:00,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:34:00,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2020-09-25 14:34:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1226. [2020-09-25 14:34:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-09-25 14:34:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1526 transitions. [2020-09-25 14:34:00,342 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1526 transitions. Word has length 207 [2020-09-25 14:34:00,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:00,342 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1526 transitions. [2020-09-25 14:34:00,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:34:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1526 transitions. [2020-09-25 14:34:00,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 14:34:00,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:00,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:00,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:34:00,347 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:00,348 INFO L82 PathProgramCache]: Analyzing trace with hash -608677172, now seen corresponding path program 1 times [2020-09-25 14:34:00,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:00,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000044875] [2020-09-25 14:34:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:00,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:00,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:00,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:01,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:04,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:04,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 14:34:04,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:34:04,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3885 [2020-09-25 14:34:04,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:04,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 14:34:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:34:04,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:04,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:34:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:04,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:34:04,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000044875] [2020-09-25 14:34:04,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:04,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:34:04,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550598470] [2020-09-25 14:34:04,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:34:04,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:04,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:34:04,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:34:04,385 INFO L87 Difference]: Start difference. First operand 1226 states and 1526 transitions. Second operand 4 states. [2020-09-25 14:34:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:04,834 INFO L93 Difference]: Finished difference Result 2636 states and 3360 transitions. [2020-09-25 14:34:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:34:04,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-09-25 14:34:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:04,842 INFO L225 Difference]: With dead ends: 2636 [2020-09-25 14:34:04,843 INFO L226 Difference]: Without dead ends: 1506 [2020-09-25 14:34:04,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:34:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2020-09-25 14:34:04,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 804. [2020-09-25 14:34:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-09-25 14:34:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 982 transitions. [2020-09-25 14:34:04,878 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 982 transitions. Word has length 214 [2020-09-25 14:34:04,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:04,879 INFO L479 AbstractCegarLoop]: Abstraction has 804 states and 982 transitions. [2020-09-25 14:34:04,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:34:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 982 transitions. [2020-09-25 14:34:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 14:34:04,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:04,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:04,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:34:04,885 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:04,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:04,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1995787975, now seen corresponding path program 1 times [2020-09-25 14:34:04,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:04,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870576372] [2020-09-25 14:34:04,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:05,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 14:34:05,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:05,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 14:34:05,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:05,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:05,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 14:34:05,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:34:05,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:05,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:05,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:05,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:05,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:05,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:05,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:05,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:34:05,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870576372] [2020-09-25 14:34:05,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:05,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:34:05,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829523772] [2020-09-25 14:34:05,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:34:05,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:05,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:34:05,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:05,296 INFO L87 Difference]: Start difference. First operand 804 states and 982 transitions. Second operand 3 states. [2020-09-25 14:34:05,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:05,535 INFO L93 Difference]: Finished difference Result 1584 states and 1999 transitions. [2020-09-25 14:34:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:34:05,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-25 14:34:05,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:05,541 INFO L225 Difference]: With dead ends: 1584 [2020-09-25 14:34:05,541 INFO L226 Difference]: Without dead ends: 905 [2020-09-25 14:34:05,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:05,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-09-25 14:34:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 863. [2020-09-25 14:34:05,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-09-25 14:34:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1053 transitions. [2020-09-25 14:34:05,569 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1053 transitions. Word has length 224 [2020-09-25 14:34:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:05,569 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1053 transitions. [2020-09-25 14:34:05,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:34:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1053 transitions. [2020-09-25 14:34:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 14:34:05,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:05,573 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:05,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:34:05,574 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:05,574 INFO L82 PathProgramCache]: Analyzing trace with hash 573547111, now seen corresponding path program 1 times [2020-09-25 14:34:05,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:05,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812259817] [2020-09-25 14:34:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:05,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:05,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 14:34:05,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:34:05,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-09-25 14:34:05,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:05,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 14:34:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:34:05,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:06,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:06,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:06,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:06,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:06,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:06,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:06,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:06,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:34:06,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812259817] [2020-09-25 14:34:06,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:06,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:34:06,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365351420] [2020-09-25 14:34:06,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:34:06,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:06,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:34:06,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:06,104 INFO L87 Difference]: Start difference. First operand 863 states and 1053 transitions. Second operand 3 states. [2020-09-25 14:34:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:06,294 INFO L93 Difference]: Finished difference Result 1617 states and 2009 transitions. [2020-09-25 14:34:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:34:06,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-25 14:34:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:06,300 INFO L225 Difference]: With dead ends: 1617 [2020-09-25 14:34:06,301 INFO L226 Difference]: Without dead ends: 879 [2020-09-25 14:34:06,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:06,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-09-25 14:34:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 841. [2020-09-25 14:34:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2020-09-25 14:34:06,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1023 transitions. [2020-09-25 14:34:06,327 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1023 transitions. Word has length 224 [2020-09-25 14:34:06,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:06,328 INFO L479 AbstractCegarLoop]: Abstraction has 841 states and 1023 transitions. [2020-09-25 14:34:06,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:34:06,328 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1023 transitions. [2020-09-25 14:34:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 14:34:06,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:06,333 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:06,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 14:34:06,333 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:06,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:06,334 INFO L82 PathProgramCache]: Analyzing trace with hash -165389337, now seen corresponding path program 1 times [2020-09-25 14:34:06,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:06,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081534304] [2020-09-25 14:34:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:06,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:06,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:06,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 14:34:06,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:06,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-09-25 14:34:06,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:06,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-25 14:34:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:34:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:06,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:06,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:06,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:06,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:06,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:06,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:06,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:06,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:06,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:06,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:34:06,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081534304] [2020-09-25 14:34:06,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:06,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:34:06,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608999399] [2020-09-25 14:34:06,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:34:06,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:06,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:34:06,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:06,913 INFO L87 Difference]: Start difference. First operand 841 states and 1023 transitions. Second operand 3 states. [2020-09-25 14:34:07,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:07,009 INFO L93 Difference]: Finished difference Result 2145 states and 2674 transitions. [2020-09-25 14:34:07,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:34:07,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-09-25 14:34:07,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:07,016 INFO L225 Difference]: With dead ends: 2145 [2020-09-25 14:34:07,016 INFO L226 Difference]: Without dead ends: 1460 [2020-09-25 14:34:07,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-09-25 14:34:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1458. [2020-09-25 14:34:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-09-25 14:34:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1803 transitions. [2020-09-25 14:34:07,066 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1803 transitions. Word has length 232 [2020-09-25 14:34:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:07,067 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1803 transitions. [2020-09-25 14:34:07,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:34:07,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1803 transitions. [2020-09-25 14:34:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 14:34:07,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:07,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:07,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 14:34:07,073 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:07,073 INFO L82 PathProgramCache]: Analyzing trace with hash -754403252, now seen corresponding path program 1 times [2020-09-25 14:34:07,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:07,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228902229] [2020-09-25 14:34:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:09,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:09,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 14:34:09,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:34:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2882 [2020-09-25 14:34:09,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:09,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:09,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:09,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 14:34:09,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:34:09,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:10,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:10,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:10,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:10,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:10,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:10,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:10,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:10,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:10,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:10,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:10,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:10,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:34:10,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228902229] [2020-09-25 14:34:10,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:10,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:34:10,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446106088] [2020-09-25 14:34:10,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:34:10,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:10,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:34:10,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:34:10,079 INFO L87 Difference]: Start difference. First operand 1458 states and 1803 transitions. Second operand 4 states. [2020-09-25 14:34:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:10,603 INFO L93 Difference]: Finished difference Result 4364 states and 5495 transitions. [2020-09-25 14:34:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:34:10,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-09-25 14:34:10,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:10,620 INFO L225 Difference]: With dead ends: 4364 [2020-09-25 14:34:10,621 INFO L226 Difference]: Without dead ends: 3062 [2020-09-25 14:34:10,628 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 14:34:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2020-09-25 14:34:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 1560. [2020-09-25 14:34:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-09-25 14:34:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 1915 transitions. [2020-09-25 14:34:10,732 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 1915 transitions. Word has length 242 [2020-09-25 14:34:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:10,733 INFO L479 AbstractCegarLoop]: Abstraction has 1560 states and 1915 transitions. [2020-09-25 14:34:10,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:34:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 1915 transitions. [2020-09-25 14:34:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 14:34:10,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:10,740 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:10,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 14:34:10,741 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:10,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1410243604, now seen corresponding path program 1 times [2020-09-25 14:34:10,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:10,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993907854] [2020-09-25 14:34:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:10,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:14,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:14,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 14:34:14,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:34:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3376 [2020-09-25 14:34:14,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:14,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-25 14:34:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:34:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:14,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:14,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:14,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:14,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:14,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:14,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:14,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:34:14,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993907854] [2020-09-25 14:34:14,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:14,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:34:14,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365236207] [2020-09-25 14:34:14,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:34:14,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:14,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:34:14,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:34:14,253 INFO L87 Difference]: Start difference. First operand 1560 states and 1915 transitions. Second operand 4 states. [2020-09-25 14:34:14,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:14,700 INFO L93 Difference]: Finished difference Result 4702 states and 5889 transitions. [2020-09-25 14:34:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:34:14,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-09-25 14:34:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:14,715 INFO L225 Difference]: With dead ends: 4702 [2020-09-25 14:34:14,715 INFO L226 Difference]: Without dead ends: 3274 [2020-09-25 14:34:14,719 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 14:34:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2020-09-25 14:34:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 1620. [2020-09-25 14:34:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2020-09-25 14:34:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2001 transitions. [2020-09-25 14:34:14,782 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2001 transitions. Word has length 242 [2020-09-25 14:34:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:14,783 INFO L479 AbstractCegarLoop]: Abstraction has 1620 states and 2001 transitions. [2020-09-25 14:34:14,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:34:14,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2001 transitions. [2020-09-25 14:34:14,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-25 14:34:14,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:14,789 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:14,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 14:34:14,790 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:14,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:14,790 INFO L82 PathProgramCache]: Analyzing trace with hash -296998075, now seen corresponding path program 1 times [2020-09-25 14:34:14,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:14,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184900550] [2020-09-25 14:34:14,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:14,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:15,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:15,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 14:34:15,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:34:15,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-09-25 14:34:15,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:15,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-09-25 14:34:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:34:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:15,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:15,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:15,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:15,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:15,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:15,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:15,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:15,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:15,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 14:34:15,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184900550] [2020-09-25 14:34:15,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:15,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:34:15,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761513512] [2020-09-25 14:34:15,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:34:15,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:15,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:34:15,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:15,262 INFO L87 Difference]: Start difference. First operand 1620 states and 2001 transitions. Second operand 3 states. [2020-09-25 14:34:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:15,362 INFO L93 Difference]: Finished difference Result 3784 states and 4729 transitions. [2020-09-25 14:34:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:34:15,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2020-09-25 14:34:15,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:15,373 INFO L225 Difference]: With dead ends: 3784 [2020-09-25 14:34:15,373 INFO L226 Difference]: Without dead ends: 2320 [2020-09-25 14:34:15,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2020-09-25 14:34:15,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2318. [2020-09-25 14:34:15,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2318 states. [2020-09-25 14:34:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2885 transitions. [2020-09-25 14:34:15,456 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2885 transitions. Word has length 258 [2020-09-25 14:34:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:15,457 INFO L479 AbstractCegarLoop]: Abstraction has 2318 states and 2885 transitions. [2020-09-25 14:34:15,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:34:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2885 transitions. [2020-09-25 14:34:15,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 14:34:15,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:15,461 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:15,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 14:34:15,461 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:15,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:15,462 INFO L82 PathProgramCache]: Analyzing trace with hash 512679513, now seen corresponding path program 1 times [2020-09-25 14:34:15,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:15,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927114966] [2020-09-25 14:34:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:15,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:15,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:15,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:15,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 14:34:15,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:34:15,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-25 14:34:15,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:15,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 227 [2020-09-25 14:34:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:34:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:15,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:15,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:15,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:15,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:15,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:15,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 14:34:15,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927114966] [2020-09-25 14:34:15,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:15,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:34:15,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676238419] [2020-09-25 14:34:15,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:34:15,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:15,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:34:15,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:15,964 INFO L87 Difference]: Start difference. First operand 2318 states and 2885 transitions. Second operand 3 states. [2020-09-25 14:34:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:16,236 INFO L93 Difference]: Finished difference Result 4909 states and 6234 transitions. [2020-09-25 14:34:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:34:16,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2020-09-25 14:34:16,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:16,249 INFO L225 Difference]: With dead ends: 4909 [2020-09-25 14:34:16,249 INFO L226 Difference]: Without dead ends: 2711 [2020-09-25 14:34:16,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:16,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2020-09-25 14:34:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2468. [2020-09-25 14:34:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2468 states. [2020-09-25 14:34:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3125 transitions. [2020-09-25 14:34:16,335 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3125 transitions. Word has length 261 [2020-09-25 14:34:16,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:16,336 INFO L479 AbstractCegarLoop]: Abstraction has 2468 states and 3125 transitions. [2020-09-25 14:34:16,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:34:16,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3125 transitions. [2020-09-25 14:34:16,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 14:34:16,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:16,340 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:16,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 14:34:16,341 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:16,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:16,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1637140168, now seen corresponding path program 1 times [2020-09-25 14:34:16,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:16,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285682066] [2020-09-25 14:34:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:16,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:16,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:16,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:17,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:17,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 14:34:17,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:34:17,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-09-25 14:34:17,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:17,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-09-25 14:34:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:34:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:17,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:17,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:34:17,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:17,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:17,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-25 14:34:17,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285682066] [2020-09-25 14:34:17,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:17,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:34:17,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125171110] [2020-09-25 14:34:17,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:34:17,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:17,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:34:17,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:17,331 INFO L87 Difference]: Start difference. First operand 2468 states and 3125 transitions. Second operand 3 states. [2020-09-25 14:34:17,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:17,510 INFO L93 Difference]: Finished difference Result 6936 states and 8851 transitions. [2020-09-25 14:34:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:34:17,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2020-09-25 14:34:17,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:17,547 INFO L225 Difference]: With dead ends: 6936 [2020-09-25 14:34:17,548 INFO L226 Difference]: Without dead ends: 4624 [2020-09-25 14:34:17,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:34:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2020-09-25 14:34:17,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 2517. [2020-09-25 14:34:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2517 states. [2020-09-25 14:34:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3191 transitions. [2020-09-25 14:34:17,662 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3191 transitions. Word has length 263 [2020-09-25 14:34:17,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:17,662 INFO L479 AbstractCegarLoop]: Abstraction has 2517 states and 3191 transitions. [2020-09-25 14:34:17,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:34:17,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3191 transitions. [2020-09-25 14:34:17,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-09-25 14:34:17,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:17,667 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:17,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 14:34:17,668 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:17,668 INFO L82 PathProgramCache]: Analyzing trace with hash -196875119, now seen corresponding path program 1 times [2020-09-25 14:34:17,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:17,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728356592] [2020-09-25 14:34:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:34:17,702 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:34:17,702 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:34:17,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 14:34:17,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:34:17 BoogieIcfgContainer [2020-09-25 14:34:17,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:34:17,771 INFO L168 Benchmark]: Toolchain (without parser) took 36975.97 ms. Allocated memory was 141.0 MB in the beginning and 626.5 MB in the end (delta: 485.5 MB). Free memory was 104.4 MB in the beginning and 503.0 MB in the end (delta: -398.6 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:17,772 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 14:34:17,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.16 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.8 MB in the beginning and 179.5 MB in the end (delta: -75.7 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:17,774 INFO L168 Benchmark]: Boogie Preprocessor took 69.44 ms. Allocated memory is still 204.5 MB. Free memory was 179.5 MB in the beginning and 176.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:17,774 INFO L168 Benchmark]: RCFGBuilder took 1041.06 ms. Allocated memory is still 204.5 MB. Free memory was 176.6 MB in the beginning and 104.2 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:17,775 INFO L168 Benchmark]: TraceAbstraction took 35240.81 ms. Allocated memory was 204.5 MB in the beginning and 626.5 MB in the end (delta: 422.1 MB). Free memory was 103.5 MB in the beginning and 503.0 MB in the end (delta: -399.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:17,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 614.16 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.8 MB in the beginning and 179.5 MB in the end (delta: -75.7 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.44 ms. Allocated memory is still 204.5 MB. Free memory was 179.5 MB in the beginning and 176.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1041.06 ms. Allocated memory is still 204.5 MB. Free memory was 176.6 MB in the beginning and 104.2 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35240.81 ms. Allocated memory was 204.5 MB in the beginning and 626.5 MB in the end (delta: 422.1 MB). Free memory was 103.5 MB in the beginning and 503.0 MB in the end (delta: -399.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 642]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L647] int s ; [L648] int tmp ; [L652] s = 8464 [L653] 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 ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength ; [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 = __VERIFIER_nondet_int() ; [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__state = initial_state [L73] blastFlag = 0 [L74] tmp = __VERIFIER_nondet_int() [L75] Time = tmp [L76] cb = 0 [L77] ret = -1 [L78] skip = 0 [L79] got_new_session = 0 [L80] COND TRUE s__info_callback != 0 [L81] cb = s__info_callback [L87] s__in_handshake ++ [L88] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(s__cert == 0) [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND TRUE s__state == 8464 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] got_new_session = 1 [L279] s__state = 8496 [L280] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND TRUE s__state == 8496 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L288] COND FALSE !(ret <= 0) [L291] COND FALSE !(\read(s__hit)) [L294] s__state = 8512 [L296] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND TRUE s__state == 8512 [L301] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L302] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L303] COND TRUE __cil_tmp56 + 256UL [L304] skip = 1 [L315] s__state = 8528 [L316] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND TRUE s__state == 8528 [L320] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L321] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L323] __cil_tmp57 = (unsigned long )s__options [L324] COND TRUE __cil_tmp57 + 2097152UL [L325] s__s3__tmp__use_rsa_tmp = 1 [L330] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L357] ret = __VERIFIER_nondet_int() [L358] COND FALSE !(blastFlag == 6) [L361] COND FALSE !(ret <= 0) [L378] s__state = 8544 [L379] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND TRUE ! s__s3__tmp__reuse_message [L601] COND TRUE ! skip [L602] COND TRUE state == 8528 [L603] COND TRUE s__state == 8544 [L604] COND TRUE tmp___7 != 1024 [L605] COND TRUE tmp___7 != 512 [L606] COND TRUE __cil_tmp58 != 4294967294 [L607] COND TRUE l != 4294967266 [L642] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 440 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.1s, OverallIterations: 20, TraceHistogramMax: 4, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10331 SDtfs, 7018 SDslu, 12243 SDs, 0 SdLazy, 2728 SolverSat, 447 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2517occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 7189 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 26.3s InterpolantComputationTime, 4359 NumberOfCodeBlocks, 4359 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 4075 ConstructedInterpolants, 0 QuantifiedInterpolants, 1267563 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 18 PerfectInterpolantSequences, 638/642 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...