/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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-eb0fd7c [2020-09-21 12:25:30,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:25:30,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:25:30,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:25:30,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:25:30,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:25:30,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:25:30,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:25:30,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:25:30,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:25:30,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:25:30,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:25:30,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:25:30,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:25:30,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:25:30,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:25:30,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:25:30,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:25:30,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:25:30,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:25:30,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:25:30,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:25:30,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:25:30,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:25:30,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:25:30,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:25:30,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:25:30,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:25:30,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:25:30,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:25:30,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:25:30,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:25:30,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:25:30,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:25:30,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:25:30,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:25:30,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:25:30,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:25:30,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:25:30,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:25:30,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:25:30,414 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 [2020-09-21 12:25:30,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:25:30,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:25:30,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:25:30,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:25:30,444 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:25:30,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:25:30,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:25:30,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:25:30,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:25:30,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:25:30,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:25:30,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:25:30,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:25:30,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:25:30,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:25:30,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:25:30,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:25:30,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:25:30,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:25:30,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:25:30,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:25:30,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:25:30,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:25:30,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:25:30,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:25:30,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:25:30,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:25:30,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:25:30,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:25:30,449 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:25:30,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:25:30,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:25:30,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:25:30,998 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:25:30,999 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:25:31,000 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-21 12:25:31,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/345b0b3eb/e70a60bc4f41475e84f64bd368ac3300/FLAG81b7d4781 [2020-09-21 12:25:31,665 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:25:31,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-21 12:25:31,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/345b0b3eb/e70a60bc4f41475e84f64bd368ac3300/FLAG81b7d4781 [2020-09-21 12:25:31,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/345b0b3eb/e70a60bc4f41475e84f64bd368ac3300 [2020-09-21 12:25:31,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:25:31,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:25:31,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:31,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:25:31,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:25:31,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:31" (1/1) ... [2020-09-21 12:25:31,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231fe863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:31, skipping insertion in model container [2020-09-21 12:25:31,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:31" (1/1) ... [2020-09-21 12:25:32,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:25:32,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:25:32,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:32,532 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:25:32,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:32,772 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:25:32,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:32 WrapperNode [2020-09-21 12:25:32,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:32,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:25:32,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:25:32,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:25:32,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:32" (1/1) ... [2020-09-21 12:25:32,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:32" (1/1) ... [2020-09-21 12:25:32,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:32" (1/1) ... [2020-09-21 12:25:32,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:32" (1/1) ... [2020-09-21 12:25:32,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:32" (1/1) ... [2020-09-21 12:25:32,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:32" (1/1) ... [2020-09-21 12:25:32,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:32" (1/1) ... [2020-09-21 12:25:32,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:25:32,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:25:32,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:25:32,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:25:32,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:32" (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 [2020-09-21 12:25:32,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:25:32,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:25:32,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-21 12:25:32,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:25:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:25:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 12:25:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:25:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-21 12:25:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-21 12:25:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:25:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:25:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:25:33,195 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-21 12:25:33,718 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-21 12:25:33,719 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-21 12:25:33,733 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:25:33,733 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:25:33,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:33 BoogieIcfgContainer [2020-09-21 12:25:33,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:25:33,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:25:33,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:25:33,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:25:33,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:25:31" (1/3) ... [2020-09-21 12:25:33,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e38cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:33, skipping insertion in model container [2020-09-21 12:25:33,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:32" (2/3) ... [2020-09-21 12:25:33,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e38cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:33, skipping insertion in model container [2020-09-21 12:25:33,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:33" (3/3) ... [2020-09-21 12:25:33,751 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-09-21 12:25:33,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:25:33,775 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:25:33,798 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:25:33,831 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:25:33,832 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:25:33,832 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:25:33,832 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:25:33,832 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:25:33,832 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:25:33,832 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:25:33,833 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:25:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-09-21 12:25:33,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 12:25:33,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:33,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:33,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:33,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:33,881 INFO L82 PathProgramCache]: Analyzing trace with hash 317102767, now seen corresponding path program 1 times [2020-09-21 12:25:33,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:33,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607228983] [2020-09-21 12:25:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:35,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:25:35,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:25:35,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:25:35,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 12:25:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:25:35,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:25:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:35,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:35,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:35,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:35,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:35,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:35,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:35,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607228983] [2020-09-21 12:25:35,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:35,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:35,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548362476] [2020-09-21 12:25:35,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:35,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:35,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:35,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:35,224 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 3 states. [2020-09-21 12:25:35,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:35,611 INFO L93 Difference]: Finished difference Result 373 states and 642 transitions. [2020-09-21 12:25:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:35,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-21 12:25:35,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:35,644 INFO L225 Difference]: With dead ends: 373 [2020-09-21 12:25:35,645 INFO L226 Difference]: Without dead ends: 190 [2020-09-21 12:25:35,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-21 12:25:35,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2020-09-21 12:25:35,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-09-21 12:25:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 278 transitions. [2020-09-21 12:25:35,724 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 278 transitions. Word has length 31 [2020-09-21 12:25:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:35,724 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 278 transitions. [2020-09-21 12:25:35,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:35,725 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 278 transitions. [2020-09-21 12:25:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-21 12:25:35,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:35,727 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] [2020-09-21 12:25:35,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:25:35,728 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:35,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:35,729 INFO L82 PathProgramCache]: Analyzing trace with hash 966890690, now seen corresponding path program 1 times [2020-09-21 12:25:35,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:35,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799531011] [2020-09-21 12:25:35,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:36,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:25:36,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:25:36,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:25:36,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:36,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 12:25:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:36,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:36,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:36,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:36,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:36,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:25:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:36,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799531011] [2020-09-21 12:25:36,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:36,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:36,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657084982] [2020-09-21 12:25:36,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:36,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:36,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:36,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:36,808 INFO L87 Difference]: Start difference. First operand 189 states and 278 transitions. Second operand 3 states. [2020-09-21 12:25:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:36,838 INFO L93 Difference]: Finished difference Result 354 states and 525 transitions. [2020-09-21 12:25:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:36,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-09-21 12:25:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:36,843 INFO L225 Difference]: With dead ends: 354 [2020-09-21 12:25:36,843 INFO L226 Difference]: Without dead ends: 169 [2020-09-21 12:25:36,851 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 [2020-09-21 12:25:36,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-21 12:25:36,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2020-09-21 12:25:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-21 12:25:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 246 transitions. [2020-09-21 12:25:36,868 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 246 transitions. Word has length 32 [2020-09-21 12:25:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:36,869 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 246 transitions. [2020-09-21 12:25:36,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:36,869 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 246 transitions. [2020-09-21 12:25:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-21 12:25:36,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:36,871 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] [2020-09-21 12:25:36,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:25:36,872 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:36,872 INFO L82 PathProgramCache]: Analyzing trace with hash 115186168, now seen corresponding path program 1 times [2020-09-21 12:25:36,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:36,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748353263] [2020-09-21 12:25:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 12:25:37,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-09-21 12:25:37,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:37,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 12:25:37,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:25:37,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:37,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:37,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:37,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:37,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748353263] [2020-09-21 12:25:37,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:37,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:37,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925320472] [2020-09-21 12:25:37,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:37,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:37,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:37,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:37,465 INFO L87 Difference]: Start difference. First operand 169 states and 246 transitions. Second operand 3 states. [2020-09-21 12:25:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:37,711 INFO L93 Difference]: Finished difference Result 375 states and 562 transitions. [2020-09-21 12:25:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:37,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-09-21 12:25:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:37,716 INFO L225 Difference]: With dead ends: 375 [2020-09-21 12:25:37,716 INFO L226 Difference]: Without dead ends: 207 [2020-09-21 12:25:37,720 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 [2020-09-21 12:25:37,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-21 12:25:37,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 193. [2020-09-21 12:25:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-21 12:25:37,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 283 transitions. [2020-09-21 12:25:37,749 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 283 transitions. Word has length 35 [2020-09-21 12:25:37,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:37,750 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 283 transitions. [2020-09-21 12:25:37,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 283 transitions. [2020-09-21 12:25:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 12:25:37,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:37,753 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] [2020-09-21 12:25:37,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:25:37,753 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:37,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2026060512, now seen corresponding path program 1 times [2020-09-21 12:25:37,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:37,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884230556] [2020-09-21 12:25:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:25:38,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-21 12:25:38,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:25:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:38,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:38,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:38,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:38,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:38,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:38,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:38,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:38,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:38,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:38,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:38,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884230556] [2020-09-21 12:25:38,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:38,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:38,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761819391] [2020-09-21 12:25:38,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:38,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:38,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:38,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:38,214 INFO L87 Difference]: Start difference. First operand 193 states and 283 transitions. Second operand 3 states. [2020-09-21 12:25:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:38,322 INFO L93 Difference]: Finished difference Result 553 states and 815 transitions. [2020-09-21 12:25:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:38,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-09-21 12:25:38,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:38,327 INFO L225 Difference]: With dead ends: 553 [2020-09-21 12:25:38,327 INFO L226 Difference]: Without dead ends: 373 [2020-09-21 12:25:38,328 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 [2020-09-21 12:25:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-09-21 12:25:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2020-09-21 12:25:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-09-21 12:25:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 539 transitions. [2020-09-21 12:25:38,363 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 539 transitions. Word has length 38 [2020-09-21 12:25:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:38,364 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 539 transitions. [2020-09-21 12:25:38,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 539 transitions. [2020-09-21 12:25:38,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:25:38,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:38,372 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] [2020-09-21 12:25:38,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:25:38,374 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:38,375 INFO L82 PathProgramCache]: Analyzing trace with hash -2011240475, now seen corresponding path program 1 times [2020-09-21 12:25:38,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:38,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643157856] [2020-09-21 12:25:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:39,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-21 12:25:39,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:25:39,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-09-21 12:25:39,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-21 12:25:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:39,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:39,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:39,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:39,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:39,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643157856] [2020-09-21 12:25:39,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:39,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:39,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278765243] [2020-09-21 12:25:39,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:39,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:39,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:39,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:39,266 INFO L87 Difference]: Start difference. First operand 371 states and 539 transitions. Second operand 3 states. [2020-09-21 12:25:39,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:39,501 INFO L93 Difference]: Finished difference Result 823 states and 1225 transitions. [2020-09-21 12:25:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:39,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-09-21 12:25:39,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:39,507 INFO L225 Difference]: With dead ends: 823 [2020-09-21 12:25:39,508 INFO L226 Difference]: Without dead ends: 465 [2020-09-21 12:25:39,510 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 [2020-09-21 12:25:39,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-09-21 12:25:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 457. [2020-09-21 12:25:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-09-21 12:25:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 637 transitions. [2020-09-21 12:25:39,538 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 637 transitions. Word has length 40 [2020-09-21 12:25:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:39,539 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 637 transitions. [2020-09-21 12:25:39,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 637 transitions. [2020-09-21 12:25:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:25:39,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:39,543 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] [2020-09-21 12:25:39,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:25:39,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:39,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1753075037, now seen corresponding path program 1 times [2020-09-21 12:25:39,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:39,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043607266] [2020-09-21 12:25:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:39,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:40,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-21 12:25:40,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:25:40,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-09-21 12:25:40,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-21 12:25:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:40,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:40,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:40,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:40,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:40,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:40,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:40,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:40,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043607266] [2020-09-21 12:25:40,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:40,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:40,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602094989] [2020-09-21 12:25:40,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:40,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:40,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:40,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:40,490 INFO L87 Difference]: Start difference. First operand 457 states and 637 transitions. Second operand 3 states. [2020-09-21 12:25:40,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:40,727 INFO L93 Difference]: Finished difference Result 1003 states and 1432 transitions. [2020-09-21 12:25:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:40,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-09-21 12:25:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:40,732 INFO L225 Difference]: With dead ends: 1003 [2020-09-21 12:25:40,733 INFO L226 Difference]: Without dead ends: 535 [2020-09-21 12:25:40,734 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 [2020-09-21 12:25:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-09-21 12:25:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 509. [2020-09-21 12:25:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-09-21 12:25:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 719 transitions. [2020-09-21 12:25:40,754 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 719 transitions. Word has length 40 [2020-09-21 12:25:40,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:40,755 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 719 transitions. [2020-09-21 12:25:40,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 719 transitions. [2020-09-21 12:25:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:25:40,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:40,758 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] [2020-09-21 12:25:40,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:25:40,759 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:40,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1536438553, now seen corresponding path program 1 times [2020-09-21 12:25:40,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:40,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098708112] [2020-09-21 12:25:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:40,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:41,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:41,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-21 12:25:41,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:25:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:25:41,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-21 12:25:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:25:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:41,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:41,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:41,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:41,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:41,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:41,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:41,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:41,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:41,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:41,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098708112] [2020-09-21 12:25:41,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:41,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:41,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956717091] [2020-09-21 12:25:41,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:41,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:41,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:41,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:41,825 INFO L87 Difference]: Start difference. First operand 509 states and 719 transitions. Second operand 3 states. [2020-09-21 12:25:42,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:42,067 INFO L93 Difference]: Finished difference Result 1125 states and 1628 transitions. [2020-09-21 12:25:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:42,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-09-21 12:25:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:42,072 INFO L225 Difference]: With dead ends: 1125 [2020-09-21 12:25:42,072 INFO L226 Difference]: Without dead ends: 605 [2020-09-21 12:25:42,073 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 [2020-09-21 12:25:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2020-09-21 12:25:42,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 565. [2020-09-21 12:25:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2020-09-21 12:25:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 809 transitions. [2020-09-21 12:25:42,092 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 809 transitions. Word has length 40 [2020-09-21 12:25:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:42,093 INFO L479 AbstractCegarLoop]: Abstraction has 565 states and 809 transitions. [2020-09-21 12:25:42,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 809 transitions. [2020-09-21 12:25:42,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 12:25:42,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:42,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:42,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:25:42,095 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:42,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:42,095 INFO L82 PathProgramCache]: Analyzing trace with hash 705113242, now seen corresponding path program 1 times [2020-09-21 12:25:42,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:42,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920661519] [2020-09-21 12:25:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:43,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-21 12:25:43,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:25:43,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:25:43,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-21 12:25:43,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:25:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:43,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:43,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:43,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:43,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:43,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:43,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920661519] [2020-09-21 12:25:43,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:43,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:43,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327059278] [2020-09-21 12:25:43,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:43,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:43,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:43,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:43,147 INFO L87 Difference]: Start difference. First operand 565 states and 809 transitions. Second operand 3 states. [2020-09-21 12:25:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:43,182 INFO L93 Difference]: Finished difference Result 1137 states and 1629 transitions. [2020-09-21 12:25:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:43,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-09-21 12:25:43,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:43,187 INFO L225 Difference]: With dead ends: 1137 [2020-09-21 12:25:43,187 INFO L226 Difference]: Without dead ends: 585 [2020-09-21 12:25:43,189 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 [2020-09-21 12:25:43,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-09-21 12:25:43,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 581. [2020-09-21 12:25:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-09-21 12:25:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 829 transitions. [2020-09-21 12:25:43,205 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 829 transitions. Word has length 42 [2020-09-21 12:25:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:43,206 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 829 transitions. [2020-09-21 12:25:43,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 829 transitions. [2020-09-21 12:25:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:25:43,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:43,208 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] [2020-09-21 12:25:43,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:25:43,208 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:43,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:43,209 INFO L82 PathProgramCache]: Analyzing trace with hash -375056722, now seen corresponding path program 1 times [2020-09-21 12:25:43,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:43,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127252707] [2020-09-21 12:25:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:43,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:43,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:25:43,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-21 12:25:43,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:25:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:25:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:43,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:43,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:43,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:43,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:43,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:43,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:43,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:43,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127252707] [2020-09-21 12:25:43,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:43,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:25:43,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518817148] [2020-09-21 12:25:43,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:25:43,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:43,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:25:43,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:25:43,674 INFO L87 Difference]: Start difference. First operand 581 states and 829 transitions. Second operand 5 states. [2020-09-21 12:25:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:43,865 INFO L93 Difference]: Finished difference Result 1166 states and 1664 transitions. [2020-09-21 12:25:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:25:43,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-21 12:25:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:43,870 INFO L225 Difference]: With dead ends: 1166 [2020-09-21 12:25:43,871 INFO L226 Difference]: Without dead ends: 598 [2020-09-21 12:25:43,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:25:43,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-09-21 12:25:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 592. [2020-09-21 12:25:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-09-21 12:25:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 840 transitions. [2020-09-21 12:25:43,892 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 840 transitions. Word has length 46 [2020-09-21 12:25:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:43,892 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 840 transitions. [2020-09-21 12:25:43,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:25:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 840 transitions. [2020-09-21 12:25:43,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-21 12:25:43,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:43,894 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:43,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:25:43,895 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:43,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:43,895 INFO L82 PathProgramCache]: Analyzing trace with hash 684750231, now seen corresponding path program 1 times [2020-09-21 12:25:43,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:43,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790053183] [2020-09-21 12:25:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:43,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:44,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-21 12:25:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:25:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-21 12:25:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 12:25:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:25:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:44,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:44,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:44,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:44,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:44,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790053183] [2020-09-21 12:25:44,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:44,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:44,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691895916] [2020-09-21 12:25:44,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:44,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:44,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:44,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:44,280 INFO L87 Difference]: Start difference. First operand 592 states and 840 transitions. Second operand 3 states. [2020-09-21 12:25:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:44,433 INFO L93 Difference]: Finished difference Result 1216 states and 1737 transitions. [2020-09-21 12:25:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:44,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-09-21 12:25:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:44,437 INFO L225 Difference]: With dead ends: 1216 [2020-09-21 12:25:44,438 INFO L226 Difference]: Without dead ends: 648 [2020-09-21 12:25:44,439 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 [2020-09-21 12:25:44,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-09-21 12:25:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 640. [2020-09-21 12:25:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-09-21 12:25:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 900 transitions. [2020-09-21 12:25:44,458 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 900 transitions. Word has length 64 [2020-09-21 12:25:44,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:44,458 INFO L479 AbstractCegarLoop]: Abstraction has 640 states and 900 transitions. [2020-09-21 12:25:44,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:44,459 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 900 transitions. [2020-09-21 12:25:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-21 12:25:44,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:44,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:44,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:25:44,461 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:44,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:44,462 INFO L82 PathProgramCache]: Analyzing trace with hash 240725805, now seen corresponding path program 1 times [2020-09-21 12:25:44,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:44,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620563372] [2020-09-21 12:25:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:44,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-21 12:25:44,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:25:44,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-09-21 12:25:44,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:44,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:44,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 12:25:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:25:44,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:44,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:44,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:44,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:44,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:44,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:44,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 12:25:44,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620563372] [2020-09-21 12:25:44,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:44,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:44,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844196092] [2020-09-21 12:25:44,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:44,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:44,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:44,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:44,936 INFO L87 Difference]: Start difference. First operand 640 states and 900 transitions. Second operand 3 states. [2020-09-21 12:25:45,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:45,115 INFO L93 Difference]: Finished difference Result 1268 states and 1787 transitions. [2020-09-21 12:25:45,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:45,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-09-21 12:25:45,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:45,121 INFO L225 Difference]: With dead ends: 1268 [2020-09-21 12:25:45,121 INFO L226 Difference]: Without dead ends: 652 [2020-09-21 12:25:45,123 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 [2020-09-21 12:25:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-09-21 12:25:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 640. [2020-09-21 12:25:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-09-21 12:25:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 882 transitions. [2020-09-21 12:25:45,143 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 882 transitions. Word has length 86 [2020-09-21 12:25:45,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:45,143 INFO L479 AbstractCegarLoop]: Abstraction has 640 states and 882 transitions. [2020-09-21 12:25:45,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:45,144 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 882 transitions. [2020-09-21 12:25:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-21 12:25:45,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:45,149 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:25:45,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:25:45,150 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:45,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:45,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1557981007, now seen corresponding path program 1 times [2020-09-21 12:25:45,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:45,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971800551] [2020-09-21 12:25:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:45,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:45,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-21 12:25:45,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-21 12:25:45,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-21 12:25:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:25:45,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:45,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:45,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:45,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:45,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:45,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:45,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:45,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:45,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-21 12:25:45,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971800551] [2020-09-21 12:25:45,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:45,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:45,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188003920] [2020-09-21 12:25:45,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:45,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:45,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:45,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:45,387 INFO L87 Difference]: Start difference. First operand 640 states and 882 transitions. Second operand 3 states. [2020-09-21 12:25:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:45,473 INFO L93 Difference]: Finished difference Result 1258 states and 1746 transitions. [2020-09-21 12:25:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:45,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-09-21 12:25:45,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:45,481 INFO L225 Difference]: With dead ends: 1258 [2020-09-21 12:25:45,482 INFO L226 Difference]: Without dead ends: 949 [2020-09-21 12:25:45,483 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 [2020-09-21 12:25:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-09-21 12:25:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 947. [2020-09-21 12:25:45,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-09-21 12:25:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1307 transitions. [2020-09-21 12:25:45,540 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1307 transitions. Word has length 107 [2020-09-21 12:25:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:45,540 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 1307 transitions. [2020-09-21 12:25:45,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1307 transitions. [2020-09-21 12:25:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-21 12:25:45,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:45,545 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:25:45,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:25:45,546 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:45,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2144787021, now seen corresponding path program 1 times [2020-09-21 12:25:45,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:45,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855295735] [2020-09-21 12:25:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:25:45,585 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:25:45,586 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:25:45,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:25:45,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:25:45 BoogieIcfgContainer [2020-09-21 12:25:45,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:25:45,663 INFO L168 Benchmark]: Toolchain (without parser) took 13685.23 ms. Allocated memory was 140.0 MB in the beginning and 345.0 MB in the end (delta: 205.0 MB). Free memory was 103.0 MB in the beginning and 191.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:45,664 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:25:45,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.65 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 177.0 MB in the end (delta: -74.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:45,665 INFO L168 Benchmark]: Boogie Preprocessor took 69.25 ms. Allocated memory is still 202.4 MB. Free memory was 177.0 MB in the beginning and 174.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:45,666 INFO L168 Benchmark]: RCFGBuilder took 897.32 ms. Allocated memory is still 202.4 MB. Free memory was 174.2 MB in the beginning and 120.3 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:45,675 INFO L168 Benchmark]: TraceAbstraction took 11911.32 ms. Allocated memory was 202.4 MB in the beginning and 345.0 MB in the end (delta: 142.6 MB). Free memory was 120.3 MB in the beginning and 191.6 MB in the end (delta: -71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:45,679 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 794.65 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 177.0 MB in the end (delta: -74.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.25 ms. Allocated memory is still 202.4 MB. Free memory was 177.0 MB in the beginning and 174.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 897.32 ms. Allocated memory is still 202.4 MB. Free memory was 174.2 MB in the beginning and 120.3 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11911.32 ms. Allocated memory was 202.4 MB in the beginning and 345.0 MB in the end (delta: 142.6 MB). Free memory was 120.3 MB in the beginning and 191.6 MB in the end (delta: -71.3 MB). Peak memory consumption was 71.3 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, 161 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.7s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2545 SDtfs, 941 SDslu, 1855 SDs, 0 SdLazy, 996 SolverSat, 232 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=947occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 123 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 708 NumberOfCodeBlocks, 708 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 57587 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 148/148 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...