/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:18:17,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:18:17,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:18:17,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:18:17,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:18:17,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:18:17,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:18:17,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:18:17,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:18:17,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:18:17,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:18:17,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:18:17,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:18:17,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:18:17,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:18:17,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:18:17,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:18:17,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:18:17,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:18:17,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:18:17,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:18:17,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:18:17,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:18:17,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:18:17,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:18:17,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:18:17,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:18:17,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:18:17,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:18:17,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:18:17,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:18:17,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:18:17,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:18:17,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:18:17,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:18:17,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:18:17,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:18:17,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:18:17,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:18:17,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:18:17,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:18:17,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:18:18,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:18:18,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:18:18,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:18:18,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:18:18,050 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:18:18,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:18:18,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:18:18,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:18:18,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:18:18,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:18:18,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:18:18,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:18:18,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:18:18,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:18:18,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:18:18,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:18:18,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:18:18,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:18:18,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:18:18,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:18:18,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:18:18,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:18:18,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:18:18,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:18:18,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:18:18,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:18:18,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:18:18,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:18:18,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:18:18,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:18:18,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:18:18,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:18:18,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:18:18,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:18:18,525 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:18:18,526 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 12:18:18,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e644e502/a19b61552fe64a1fa8350d05f76d2dc3/FLAG7afba4388 [2020-09-25 12:18:19,170 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:18:19,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 12:18:19,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e644e502/a19b61552fe64a1fa8350d05f76d2dc3/FLAG7afba4388 [2020-09-25 12:18:19,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e644e502/a19b61552fe64a1fa8350d05f76d2dc3 [2020-09-25 12:18:19,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:18:19,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:18:19,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:18:19,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:18:19,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:18:19,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:18:19" (1/1) ... [2020-09-25 12:18:19,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1c9f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:19, skipping insertion in model container [2020-09-25 12:18:19,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:18:19" (1/1) ... [2020-09-25 12:18:19,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:18:19,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:18:19,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:18:19,874 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:18:20,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:18:20,080 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:18:20,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:20 WrapperNode [2020-09-25 12:18:20,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:18:20,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:18:20,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:18:20,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:18:20,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:20" (1/1) ... [2020-09-25 12:18:20,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:20" (1/1) ... [2020-09-25 12:18:20,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:20" (1/1) ... [2020-09-25 12:18:20,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:20" (1/1) ... [2020-09-25 12:18:20,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:20" (1/1) ... [2020-09-25 12:18:20,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:20" (1/1) ... [2020-09-25 12:18:20,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:20" (1/1) ... [2020-09-25 12:18:20,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:18:20,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:18:20,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:18:20,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:18:20,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:18:20,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:18:20,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:18:20,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 12:18:20,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:18:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:18:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 12:18:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:18:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 12:18:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-25 12:18:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 12:18:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:18:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:18:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:18:20,448 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 12:18:21,334 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 12:18:21,336 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 12:18:21,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:18:21,369 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:18:21,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:18:21 BoogieIcfgContainer [2020-09-25 12:18:21,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:18:21,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:18:21,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:18:21,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:18:21,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:18:19" (1/3) ... [2020-09-25 12:18:21,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ccf337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:18:21, skipping insertion in model container [2020-09-25 12:18:21,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:18:20" (2/3) ... [2020-09-25 12:18:21,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ccf337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:18:21, skipping insertion in model container [2020-09-25 12:18:21,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:18:21" (3/3) ... [2020-09-25 12:18:21,402 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-25 12:18:21,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:18:21,431 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:18:21,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:18:21,498 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:18:21,498 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:18:21,498 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:18:21,499 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:18:21,499 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:18:21,499 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:18:21,499 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:18:21,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:18:21,556 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-25 12:18:21,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 12:18:21,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:21,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:21,594 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:21,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-25 12:18:21,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:21,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418310592] [2020-09-25 12:18:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:22,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:23,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:23,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:23,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 12:18:23,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:23,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-09-25 12:18:23,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:23,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:18:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:18:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 12:18:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:18:23,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:23,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:23,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:23,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:23,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:23,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:18:23,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:23,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:23,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:18:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:18:23,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418310592] [2020-09-25 12:18:23,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:23,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:18:23,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028917163] [2020-09-25 12:18:23,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:18:23,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:23,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:18:23,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:18:23,581 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 6 states. [2020-09-25 12:18:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:23,970 INFO L93 Difference]: Finished difference Result 845 states and 1110 transitions. [2020-09-25 12:18:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:18:23,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 12:18:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:23,994 INFO L225 Difference]: With dead ends: 845 [2020-09-25 12:18:23,995 INFO L226 Difference]: Without dead ends: 472 [2020-09-25 12:18:24,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:18:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-09-25 12:18:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 461. [2020-09-25 12:18:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-09-25 12:18:24,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 560 transitions. [2020-09-25 12:18:24,092 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 560 transitions. Word has length 161 [2020-09-25 12:18:24,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:24,095 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 560 transitions. [2020-09-25 12:18:24,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:18:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 560 transitions. [2020-09-25 12:18:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 12:18:24,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:24,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:24,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:18:24,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:24,107 INFO L82 PathProgramCache]: Analyzing trace with hash 508400321, now seen corresponding path program 1 times [2020-09-25 12:18:24,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:24,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548891334] [2020-09-25 12:18:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:24,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:24,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:25,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:25,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 12:18:25,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-09-25 12:18:25,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:25,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:18:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:18:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 12:18:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:25,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:25,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:25,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:25,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:25,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:25,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:25,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:25,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:18:25,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548891334] [2020-09-25 12:18:25,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:25,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:18:25,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219852420] [2020-09-25 12:18:25,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:18:25,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:25,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:18:25,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:18:25,656 INFO L87 Difference]: Start difference. First operand 461 states and 560 transitions. Second operand 7 states. [2020-09-25 12:18:26,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:26,035 INFO L93 Difference]: Finished difference Result 941 states and 1195 transitions. [2020-09-25 12:18:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:18:26,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-25 12:18:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:26,040 INFO L225 Difference]: With dead ends: 941 [2020-09-25 12:18:26,040 INFO L226 Difference]: Without dead ends: 607 [2020-09-25 12:18:26,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:18:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-09-25 12:18:26,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 570. [2020-09-25 12:18:26,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-09-25 12:18:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 691 transitions. [2020-09-25 12:18:26,066 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 691 transitions. Word has length 170 [2020-09-25 12:18:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:26,067 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 691 transitions. [2020-09-25 12:18:26,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:18:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 691 transitions. [2020-09-25 12:18:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 12:18:26,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:26,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:26,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:18:26,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:26,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:26,071 INFO L82 PathProgramCache]: Analyzing trace with hash -2044458217, now seen corresponding path program 1 times [2020-09-25 12:18:26,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:26,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877503596] [2020-09-25 12:18:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:26,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:26,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:26,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:26,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:26,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 12:18:26,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:18:26,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-09-25 12:18:26,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:26,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 12:18:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:18:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:27,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:27,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:27,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:27,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:27,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:27,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 12:18:27,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877503596] [2020-09-25 12:18:27,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:27,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:27,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853283571] [2020-09-25 12:18:27,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:27,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:27,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:27,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:27,057 INFO L87 Difference]: Start difference. First operand 570 states and 691 transitions. Second operand 3 states. [2020-09-25 12:18:27,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:27,157 INFO L93 Difference]: Finished difference Result 1017 states and 1256 transitions. [2020-09-25 12:18:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:27,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2020-09-25 12:18:27,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:27,161 INFO L225 Difference]: With dead ends: 1017 [2020-09-25 12:18:27,162 INFO L226 Difference]: Without dead ends: 586 [2020-09-25 12:18:27,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:27,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-25 12:18:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2020-09-25 12:18:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-09-25 12:18:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 707 transitions. [2020-09-25 12:18:27,181 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 707 transitions. Word has length 186 [2020-09-25 12:18:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:27,182 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 707 transitions. [2020-09-25 12:18:27,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 707 transitions. [2020-09-25 12:18:27,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 12:18:27,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:27,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:27,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:18:27,186 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:27,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:27,186 INFO L82 PathProgramCache]: Analyzing trace with hash 570616873, now seen corresponding path program 1 times [2020-09-25 12:18:27,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:27,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725690057] [2020-09-25 12:18:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:27,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:27,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 12:18:27,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-09-25 12:18:27,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:27,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 12:18:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:18:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:18:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:27,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:27,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:27,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:27,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:27,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:27,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:18:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:18:27,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725690057] [2020-09-25 12:18:27,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:27,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:27,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718044292] [2020-09-25 12:18:27,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:27,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:27,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:27,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:27,873 INFO L87 Difference]: Start difference. First operand 586 states and 707 transitions. Second operand 3 states. [2020-09-25 12:18:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:28,198 INFO L93 Difference]: Finished difference Result 1112 states and 1397 transitions. [2020-09-25 12:18:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:28,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-25 12:18:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:28,206 INFO L225 Difference]: With dead ends: 1112 [2020-09-25 12:18:28,206 INFO L226 Difference]: Without dead ends: 656 [2020-09-25 12:18:28,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:28,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-09-25 12:18:28,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 638. [2020-09-25 12:18:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-09-25 12:18:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 782 transitions. [2020-09-25 12:18:28,253 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 782 transitions. Word has length 187 [2020-09-25 12:18:28,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:28,254 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 782 transitions. [2020-09-25 12:18:28,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 782 transitions. [2020-09-25 12:18:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 12:18:28,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:28,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:28,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:18:28,262 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:28,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:28,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1925663772, now seen corresponding path program 1 times [2020-09-25 12:18:28,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:28,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053030241] [2020-09-25 12:18:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:28,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:29,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:29,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:29,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 12:18:29,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:18:29,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-09-25 12:18:29,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:29,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:18:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-25 12:18:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:18:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:29,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:29,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:29,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:29,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:29,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:29,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:29,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:18:29,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053030241] [2020-09-25 12:18:29,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:29,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:29,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407101809] [2020-09-25 12:18:29,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:29,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:29,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:29,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:29,843 INFO L87 Difference]: Start difference. First operand 638 states and 782 transitions. Second operand 4 states. [2020-09-25 12:18:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:30,077 INFO L93 Difference]: Finished difference Result 1178 states and 1473 transitions. [2020-09-25 12:18:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:30,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2020-09-25 12:18:30,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:30,082 INFO L225 Difference]: With dead ends: 1178 [2020-09-25 12:18:30,083 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 12:18:30,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 12:18:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 644. [2020-09-25 12:18:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-09-25 12:18:30,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 790 transitions. [2020-09-25 12:18:30,109 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 790 transitions. Word has length 193 [2020-09-25 12:18:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:30,110 INFO L479 AbstractCegarLoop]: Abstraction has 644 states and 790 transitions. [2020-09-25 12:18:30,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 790 transitions. [2020-09-25 12:18:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 12:18:30,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:30,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:30,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:18:30,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:30,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1436054601, now seen corresponding path program 1 times [2020-09-25 12:18:30,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:30,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763102084] [2020-09-25 12:18:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:30,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:30,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:30,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:31,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:31,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 12:18:31,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:31,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1162 [2020-09-25 12:18:31,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:31,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 12:18:31,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:18:31,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:31,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:31,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:31,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:31,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:31,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:31,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:18:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:18:31,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763102084] [2020-09-25 12:18:31,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:31,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:31,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144779849] [2020-09-25 12:18:31,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:31,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:31,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:31,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:31,432 INFO L87 Difference]: Start difference. First operand 644 states and 790 transitions. Second operand 4 states. [2020-09-25 12:18:31,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:31,928 INFO L93 Difference]: Finished difference Result 1681 states and 2153 transitions. [2020-09-25 12:18:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:31,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2020-09-25 12:18:31,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:31,935 INFO L225 Difference]: With dead ends: 1681 [2020-09-25 12:18:31,935 INFO L226 Difference]: Without dead ends: 1192 [2020-09-25 12:18:31,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-09-25 12:18:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 647. [2020-09-25 12:18:31,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-09-25 12:18:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 793 transitions. [2020-09-25 12:18:31,957 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 793 transitions. Word has length 195 [2020-09-25 12:18:31,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:31,957 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 793 transitions. [2020-09-25 12:18:31,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 793 transitions. [2020-09-25 12:18:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 12:18:31,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:31,961 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:31,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:18:31,961 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:31,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1625465716, now seen corresponding path program 1 times [2020-09-25 12:18:31,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:31,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096754839] [2020-09-25 12:18:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 12:18:32,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:32,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 12:18:32,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 12:18:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 12:18:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:32,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:32,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:32,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:32,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:32,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:18:32,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096754839] [2020-09-25 12:18:32,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:32,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:32,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223236562] [2020-09-25 12:18:32,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:32,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:32,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:32,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:32,370 INFO L87 Difference]: Start difference. First operand 647 states and 793 transitions. Second operand 3 states. [2020-09-25 12:18:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:32,562 INFO L93 Difference]: Finished difference Result 1609 states and 2039 transitions. [2020-09-25 12:18:32,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:32,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2020-09-25 12:18:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:32,569 INFO L225 Difference]: With dead ends: 1609 [2020-09-25 12:18:32,569 INFO L226 Difference]: Without dead ends: 1117 [2020-09-25 12:18:32,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:32,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2020-09-25 12:18:32,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1115. [2020-09-25 12:18:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-09-25 12:18:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1383 transitions. [2020-09-25 12:18:32,603 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1383 transitions. Word has length 202 [2020-09-25 12:18:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:32,603 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1383 transitions. [2020-09-25 12:18:32,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1383 transitions. [2020-09-25 12:18:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 12:18:32,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:32,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:32,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:18:32,608 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash -71816333, now seen corresponding path program 1 times [2020-09-25 12:18:32,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:32,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618118600] [2020-09-25 12:18:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 12:18:32,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 12:18:32,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:18:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 12:18:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:18:32,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:32,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:32,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:32,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:32,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:32,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:32,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:32,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:32,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:18:32,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618118600] [2020-09-25 12:18:32,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:18:32,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 12:18:32,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249990426] [2020-09-25 12:18:32,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:32,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:32,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:32,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:32,990 INFO L87 Difference]: Start difference. First operand 1115 states and 1383 transitions. Second operand 4 states. [2020-09-25 12:18:33,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:33,328 INFO L93 Difference]: Finished difference Result 2618 states and 3353 transitions. [2020-09-25 12:18:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:33,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2020-09-25 12:18:33,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:33,339 INFO L225 Difference]: With dead ends: 2618 [2020-09-25 12:18:33,339 INFO L226 Difference]: Without dead ends: 1614 [2020-09-25 12:18:33,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:33,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2020-09-25 12:18:33,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1391. [2020-09-25 12:18:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1391 states. [2020-09-25 12:18:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1735 transitions. [2020-09-25 12:18:33,395 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1735 transitions. Word has length 205 [2020-09-25 12:18:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:33,396 INFO L479 AbstractCegarLoop]: Abstraction has 1391 states and 1735 transitions. [2020-09-25 12:18:33,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1735 transitions. [2020-09-25 12:18:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 12:18:33,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:33,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:33,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:18:33,403 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:33,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:33,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1924666477, now seen corresponding path program 1 times [2020-09-25 12:18:33,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:33,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590822852] [2020-09-25 12:18:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:33,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:33,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 12:18:34,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:34,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-09-25 12:18:34,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 12:18:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 12:18:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:34,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:34,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:34,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:34,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:34,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:34,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:34,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:18:34,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590822852] [2020-09-25 12:18:34,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:34,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:34,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305028542] [2020-09-25 12:18:34,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:34,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:34,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:34,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:34,368 INFO L87 Difference]: Start difference. First operand 1391 states and 1735 transitions. Second operand 4 states. [2020-09-25 12:18:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:34,848 INFO L93 Difference]: Finished difference Result 4313 states and 5495 transitions. [2020-09-25 12:18:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:34,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2020-09-25 12:18:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:34,862 INFO L225 Difference]: With dead ends: 4313 [2020-09-25 12:18:34,863 INFO L226 Difference]: Without dead ends: 3033 [2020-09-25 12:18:34,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:34,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2020-09-25 12:18:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 1489. [2020-09-25 12:18:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-09-25 12:18:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1857 transitions. [2020-09-25 12:18:34,958 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1857 transitions. Word has length 213 [2020-09-25 12:18:34,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:34,959 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1857 transitions. [2020-09-25 12:18:34,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:34,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1857 transitions. [2020-09-25 12:18:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 12:18:34,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:34,964 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:34,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:18:34,965 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:34,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1074238856, now seen corresponding path program 1 times [2020-09-25 12:18:34,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:34,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330119435] [2020-09-25 12:18:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:35,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:35,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 12:18:35,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:18:35,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 12:18:35,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:35,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 12:18:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 12:18:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:35,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:35,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:35,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:35,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:35,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:18:35,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330119435] [2020-09-25 12:18:35,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:35,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:35,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586617235] [2020-09-25 12:18:35,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:35,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:35,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:35,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:35,388 INFO L87 Difference]: Start difference. First operand 1489 states and 1857 transitions. Second operand 3 states. [2020-09-25 12:18:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:35,589 INFO L93 Difference]: Finished difference Result 3479 states and 4403 transitions. [2020-09-25 12:18:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:35,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-09-25 12:18:35,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:35,599 INFO L225 Difference]: With dead ends: 3479 [2020-09-25 12:18:35,599 INFO L226 Difference]: Without dead ends: 2145 [2020-09-25 12:18:35,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2020-09-25 12:18:35,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2143. [2020-09-25 12:18:35,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2143 states. [2020-09-25 12:18:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 2684 transitions. [2020-09-25 12:18:35,679 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 2684 transitions. Word has length 230 [2020-09-25 12:18:35,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:35,680 INFO L479 AbstractCegarLoop]: Abstraction has 2143 states and 2684 transitions. [2020-09-25 12:18:35,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:35,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 2684 transitions. [2020-09-25 12:18:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 12:18:35,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:35,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:35,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:18:35,686 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:35,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1348977484, now seen corresponding path program 1 times [2020-09-25 12:18:35,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:35,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179555715] [2020-09-25 12:18:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:35,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:36,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 12:18:36,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:36,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-09-25 12:18:36,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:36,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:18:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-09-25 12:18:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:18:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:36,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:36,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:36,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:36,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:36,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:36,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:36,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:18:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:18:36,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179555715] [2020-09-25 12:18:36,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:18:36,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 12:18:36,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412154043] [2020-09-25 12:18:36,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:36,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:36,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:36,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:36,383 INFO L87 Difference]: Start difference. First operand 2143 states and 2684 transitions. Second operand 4 states. [2020-09-25 12:18:36,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:36,784 INFO L93 Difference]: Finished difference Result 4961 states and 6266 transitions. [2020-09-25 12:18:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:36,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2020-09-25 12:18:36,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:36,800 INFO L225 Difference]: With dead ends: 4961 [2020-09-25 12:18:36,800 INFO L226 Difference]: Without dead ends: 2742 [2020-09-25 12:18:36,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2020-09-25 12:18:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2631. [2020-09-25 12:18:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2631 states. [2020-09-25 12:18:36,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3282 transitions. [2020-09-25 12:18:36,891 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3282 transitions. Word has length 232 [2020-09-25 12:18:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:36,891 INFO L479 AbstractCegarLoop]: Abstraction has 2631 states and 3282 transitions. [2020-09-25 12:18:36,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3282 transitions. [2020-09-25 12:18:36,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 12:18:36,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:36,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:36,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:18:36,899 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:36,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:36,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1328973908, now seen corresponding path program 1 times [2020-09-25 12:18:36,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:36,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503486483] [2020-09-25 12:18:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:37,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 12:18:37,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:37,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-09-25 12:18:37,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:37,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:18:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-09-25 12:18:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:18:37,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:37,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:37,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:37,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:37,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:37,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:37,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:37,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:18:37,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503486483] [2020-09-25 12:18:37,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:18:37,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 12:18:37,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597753324] [2020-09-25 12:18:37,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:37,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:37,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:37,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:37,698 INFO L87 Difference]: Start difference. First operand 2631 states and 3282 transitions. Second operand 4 states. [2020-09-25 12:18:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:38,034 INFO L93 Difference]: Finished difference Result 5856 states and 7368 transitions. [2020-09-25 12:18:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:38,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2020-09-25 12:18:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:38,049 INFO L225 Difference]: With dead ends: 5856 [2020-09-25 12:18:38,049 INFO L226 Difference]: Without dead ends: 3209 [2020-09-25 12:18:38,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:38,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2020-09-25 12:18:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 2846. [2020-09-25 12:18:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2846 states. [2020-09-25 12:18:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 3550 transitions. [2020-09-25 12:18:38,150 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 3550 transitions. Word has length 232 [2020-09-25 12:18:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:38,151 INFO L479 AbstractCegarLoop]: Abstraction has 2846 states and 3550 transitions. [2020-09-25 12:18:38,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:38,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 3550 transitions. [2020-09-25 12:18:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 12:18:38,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:38,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:38,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:18:38,159 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:38,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:38,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1847120940, now seen corresponding path program 1 times [2020-09-25 12:18:38,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:38,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666352517] [2020-09-25 12:18:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:38,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:38,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:38,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 12:18:38,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-09-25 12:18:38,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:38,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-09-25 12:18:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 12:18:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:39,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:39,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:39,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:39,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:39,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:39,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:39,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:39,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:39,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:18:39,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666352517] [2020-09-25 12:18:39,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:39,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:39,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520151870] [2020-09-25 12:18:39,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:39,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:39,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:39,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:39,112 INFO L87 Difference]: Start difference. First operand 2846 states and 3550 transitions. Second operand 4 states. [2020-09-25 12:18:39,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:39,608 INFO L93 Difference]: Finished difference Result 8630 states and 10887 transitions. [2020-09-25 12:18:39,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:39,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-09-25 12:18:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:39,635 INFO L225 Difference]: With dead ends: 8630 [2020-09-25 12:18:39,635 INFO L226 Difference]: Without dead ends: 5939 [2020-09-25 12:18:39,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:39,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2020-09-25 12:18:39,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 2966. [2020-09-25 12:18:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2966 states. [2020-09-25 12:18:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 3721 transitions. [2020-09-25 12:18:39,774 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 3721 transitions. Word has length 240 [2020-09-25 12:18:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:39,774 INFO L479 AbstractCegarLoop]: Abstraction has 2966 states and 3721 transitions. [2020-09-25 12:18:39,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 3721 transitions. [2020-09-25 12:18:39,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 12:18:39,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:39,782 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:39,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 12:18:39,782 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:39,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:39,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1347608100, now seen corresponding path program 1 times [2020-09-25 12:18:39,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:39,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236624645] [2020-09-25 12:18:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:39,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:41,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:41,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 12:18:41,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:18:41,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1463 [2020-09-25 12:18:41,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:41,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-09-25 12:18:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:18:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:41,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:41,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:41,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:41,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:41,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:18:41,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236624645] [2020-09-25 12:18:41,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:41,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:41,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288042020] [2020-09-25 12:18:41,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:41,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:41,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:41,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:41,378 INFO L87 Difference]: Start difference. First operand 2966 states and 3721 transitions. Second operand 4 states. [2020-09-25 12:18:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:41,898 INFO L93 Difference]: Finished difference Result 8988 states and 11357 transitions. [2020-09-25 12:18:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:41,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-09-25 12:18:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:41,926 INFO L225 Difference]: With dead ends: 8988 [2020-09-25 12:18:41,927 INFO L226 Difference]: Without dead ends: 6177 [2020-09-25 12:18:41,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6177 states. [2020-09-25 12:18:42,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6177 to 3221. [2020-09-25 12:18:42,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3221 states. [2020-09-25 12:18:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 3994 transitions. [2020-09-25 12:18:42,050 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 3994 transitions. Word has length 241 [2020-09-25 12:18:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:42,051 INFO L479 AbstractCegarLoop]: Abstraction has 3221 states and 3994 transitions. [2020-09-25 12:18:42,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 3994 transitions. [2020-09-25 12:18:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 12:18:42,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:42,058 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:42,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 12:18:42,058 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:42,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:42,059 INFO L82 PathProgramCache]: Analyzing trace with hash -203822532, now seen corresponding path program 1 times [2020-09-25 12:18:42,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:42,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967977593] [2020-09-25 12:18:42,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:42,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:42,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:43,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:43,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 12:18:43,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:18:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1373 [2020-09-25 12:18:43,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:43,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-09-25 12:18:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:18:43,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:43,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:43,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:43,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:43,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:43,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:43,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:43,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:43,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:18:43,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967977593] [2020-09-25 12:18:43,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:43,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:43,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6347428] [2020-09-25 12:18:43,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:43,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:43,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:43,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:43,555 INFO L87 Difference]: Start difference. First operand 3221 states and 3994 transitions. Second operand 4 states. [2020-09-25 12:18:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:44,020 INFO L93 Difference]: Finished difference Result 9436 states and 11766 transitions. [2020-09-25 12:18:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:44,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-09-25 12:18:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:44,041 INFO L225 Difference]: With dead ends: 9436 [2020-09-25 12:18:44,042 INFO L226 Difference]: Without dead ends: 6280 [2020-09-25 12:18:44,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2020-09-25 12:18:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 3332. [2020-09-25 12:18:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3332 states. [2020-09-25 12:18:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3332 states to 3332 states and 4105 transitions. [2020-09-25 12:18:44,162 INFO L78 Accepts]: Start accepts. Automaton has 3332 states and 4105 transitions. Word has length 241 [2020-09-25 12:18:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:44,163 INFO L479 AbstractCegarLoop]: Abstraction has 3332 states and 4105 transitions. [2020-09-25 12:18:44,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:44,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3332 states and 4105 transitions. [2020-09-25 12:18:44,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 12:18:44,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:44,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:44,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 12:18:44,170 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:44,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1450486464, now seen corresponding path program 1 times [2020-09-25 12:18:44,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:44,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084269490] [2020-09-25 12:18:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:44,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:44,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:44,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:44,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:44,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:44,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:45,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:45,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 12:18:45,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:18:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-09-25 12:18:45,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:45,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:18:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-09-25 12:18:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 12:18:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:45,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:45,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:45,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:45,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:45,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:45,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 12:18:45,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084269490] [2020-09-25 12:18:45,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:45,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:45,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588481777] [2020-09-25 12:18:45,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:45,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:45,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:45,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:45,220 INFO L87 Difference]: Start difference. First operand 3332 states and 4105 transitions. Second operand 4 states. [2020-09-25 12:18:45,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:45,576 INFO L93 Difference]: Finished difference Result 7195 states and 8922 transitions. [2020-09-25 12:18:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:45,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 263 [2020-09-25 12:18:45,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:45,586 INFO L225 Difference]: With dead ends: 7195 [2020-09-25 12:18:45,586 INFO L226 Difference]: Without dead ends: 4018 [2020-09-25 12:18:45,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2020-09-25 12:18:45,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 3039. [2020-09-25 12:18:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3039 states. [2020-09-25 12:18:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 3793 transitions. [2020-09-25 12:18:45,686 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 3793 transitions. Word has length 263 [2020-09-25 12:18:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:45,687 INFO L479 AbstractCegarLoop]: Abstraction has 3039 states and 3793 transitions. [2020-09-25 12:18:45,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 3793 transitions. [2020-09-25 12:18:45,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 12:18:45,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:45,699 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:45,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 12:18:45,699 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:45,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1830826787, now seen corresponding path program 1 times [2020-09-25 12:18:45,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:45,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991611722] [2020-09-25 12:18:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:46,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:46,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 12:18:46,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:46,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-25 12:18:46,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:46,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-09-25 12:18:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:18:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:46,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:46,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:46,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:46,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:46,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:46,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:46,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 12:18:46,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991611722] [2020-09-25 12:18:46,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:46,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:46,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161502969] [2020-09-25 12:18:46,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:46,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:46,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:46,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:46,360 INFO L87 Difference]: Start difference. First operand 3039 states and 3793 transitions. Second operand 3 states. [2020-09-25 12:18:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:46,638 INFO L93 Difference]: Finished difference Result 6346 states and 7994 transitions. [2020-09-25 12:18:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:46,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-09-25 12:18:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:46,646 INFO L225 Difference]: With dead ends: 6346 [2020-09-25 12:18:46,647 INFO L226 Difference]: Without dead ends: 3408 [2020-09-25 12:18:46,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:46,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2020-09-25 12:18:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3135. [2020-09-25 12:18:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3135 states. [2020-09-25 12:18:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 3916 transitions. [2020-09-25 12:18:46,741 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 3916 transitions. Word has length 264 [2020-09-25 12:18:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:46,741 INFO L479 AbstractCegarLoop]: Abstraction has 3135 states and 3916 transitions. [2020-09-25 12:18:46,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 3916 transitions. [2020-09-25 12:18:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-25 12:18:46,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:46,748 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:46,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 12:18:46,749 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:46,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:46,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1268615101, now seen corresponding path program 1 times [2020-09-25 12:18:46,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:46,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130991299] [2020-09-25 12:18:46,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:47,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:47,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-25 12:18:47,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-09-25 12:18:47,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:47,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-09-25 12:18:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:18:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:47,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:47,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:47,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:47,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:47,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:47,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:47,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:47,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 12:18:47,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130991299] [2020-09-25 12:18:47,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:47,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:47,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202468888] [2020-09-25 12:18:47,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:47,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:47,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:47,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:47,396 INFO L87 Difference]: Start difference. First operand 3135 states and 3916 transitions. Second operand 3 states. [2020-09-25 12:18:47,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:47,664 INFO L93 Difference]: Finished difference Result 7100 states and 8933 transitions. [2020-09-25 12:18:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:47,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 272 [2020-09-25 12:18:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:47,679 INFO L225 Difference]: With dead ends: 7100 [2020-09-25 12:18:47,680 INFO L226 Difference]: Without dead ends: 4120 [2020-09-25 12:18:47,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2020-09-25 12:18:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 4118. [2020-09-25 12:18:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4118 states. [2020-09-25 12:18:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 5152 transitions. [2020-09-25 12:18:47,847 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 5152 transitions. Word has length 272 [2020-09-25 12:18:47,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:47,847 INFO L479 AbstractCegarLoop]: Abstraction has 4118 states and 5152 transitions. [2020-09-25 12:18:47,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 5152 transitions. [2020-09-25 12:18:47,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-25 12:18:47,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:47,861 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:47,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 12:18:47,862 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:47,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:47,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2093976953, now seen corresponding path program 1 times [2020-09-25 12:18:47,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:47,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605352665] [2020-09-25 12:18:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:48,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:48,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:50,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:50,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-09-25 12:18:50,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:18:50,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2442 [2020-09-25 12:18:50,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:50,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-09-25 12:18:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:18:50,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:50,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:50,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:50,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:50,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:50,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:50,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:50,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:50,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:50,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-25 12:18:50,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605352665] [2020-09-25 12:18:50,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:50,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:50,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160904002] [2020-09-25 12:18:50,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:50,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:50,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:50,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:50,456 INFO L87 Difference]: Start difference. First operand 4118 states and 5152 transitions. Second operand 3 states. [2020-09-25 12:18:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:50,679 INFO L93 Difference]: Finished difference Result 11907 states and 14967 transitions. [2020-09-25 12:18:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:50,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2020-09-25 12:18:50,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:50,701 INFO L225 Difference]: With dead ends: 11907 [2020-09-25 12:18:50,701 INFO L226 Difference]: Without dead ends: 7944 [2020-09-25 12:18:50,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7944 states. [2020-09-25 12:18:50,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7944 to 7942. [2020-09-25 12:18:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7942 states. [2020-09-25 12:18:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7942 states to 7942 states and 9965 transitions. [2020-09-25 12:18:50,903 INFO L78 Accepts]: Start accepts. Automaton has 7942 states and 9965 transitions. Word has length 299 [2020-09-25 12:18:50,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:50,904 INFO L479 AbstractCegarLoop]: Abstraction has 7942 states and 9965 transitions. [2020-09-25 12:18:50,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:50,904 INFO L276 IsEmpty]: Start isEmpty. Operand 7942 states and 9965 transitions. [2020-09-25 12:18:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-25 12:18:50,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:50,917 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:50,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 12:18:50,918 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1378122263, now seen corresponding path program 1 times [2020-09-25 12:18:50,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:50,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673596066] [2020-09-25 12:18:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:50,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:51,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:51,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:52,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:52,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-09-25 12:18:52,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:52,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1821 [2020-09-25 12:18:52,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:52,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 12:18:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:18:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:52,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:52,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:52,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:52,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:52,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:52,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:52,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-25 12:18:52,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673596066] [2020-09-25 12:18:52,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:52,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:52,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482192585] [2020-09-25 12:18:52,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:52,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:52,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:52,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:52,871 INFO L87 Difference]: Start difference. First operand 7942 states and 9965 transitions. Second operand 3 states. [2020-09-25 12:18:53,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:53,143 INFO L93 Difference]: Finished difference Result 13947 states and 17521 transitions. [2020-09-25 12:18:53,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:53,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 302 [2020-09-25 12:18:53,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:53,179 INFO L225 Difference]: With dead ends: 13947 [2020-09-25 12:18:53,180 INFO L226 Difference]: Without dead ends: 6160 [2020-09-25 12:18:53,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2020-09-25 12:18:53,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 6160. [2020-09-25 12:18:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6160 states. [2020-09-25 12:18:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 7711 transitions. [2020-09-25 12:18:53,354 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 7711 transitions. Word has length 302 [2020-09-25 12:18:53,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:53,355 INFO L479 AbstractCegarLoop]: Abstraction has 6160 states and 7711 transitions. [2020-09-25 12:18:53,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 7711 transitions. [2020-09-25 12:18:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-25 12:18:53,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:53,366 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:53,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 12:18:53,369 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:53,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:53,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1458792962, now seen corresponding path program 1 times [2020-09-25 12:18:53,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:53,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119858390] [2020-09-25 12:18:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:53,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:54,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-09-25 12:18:54,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-09-25 12:18:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:54,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-25 12:18:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:18:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:54,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:54,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:54,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:54,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:54,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:54,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:54,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:54,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-09-25 12:18:54,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119858390] [2020-09-25 12:18:54,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:54,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:54,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375919535] [2020-09-25 12:18:54,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:54,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:54,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:54,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:54,382 INFO L87 Difference]: Start difference. First operand 6160 states and 7711 transitions. Second operand 4 states. [2020-09-25 12:18:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:54,982 INFO L93 Difference]: Finished difference Result 18212 states and 22931 transitions. [2020-09-25 12:18:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:54,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 303 [2020-09-25 12:18:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:55,007 INFO L225 Difference]: With dead ends: 18212 [2020-09-25 12:18:55,008 INFO L226 Difference]: Without dead ends: 12003 [2020-09-25 12:18:55,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12003 states. [2020-09-25 12:18:55,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12003 to 6044. [2020-09-25 12:18:55,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6044 states. [2020-09-25 12:18:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6044 states to 6044 states and 7541 transitions. [2020-09-25 12:18:55,216 INFO L78 Accepts]: Start accepts. Automaton has 6044 states and 7541 transitions. Word has length 303 [2020-09-25 12:18:55,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:55,217 INFO L479 AbstractCegarLoop]: Abstraction has 6044 states and 7541 transitions. [2020-09-25 12:18:55,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 6044 states and 7541 transitions. [2020-09-25 12:18:55,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-25 12:18:55,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:55,225 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:55,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 12:18:55,225 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:55,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1753974762, now seen corresponding path program 1 times [2020-09-25 12:18:55,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:55,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019162978] [2020-09-25 12:18:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:55,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:55,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:55,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:55,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-09-25 12:18:55,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:55,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 12:18:55,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:55,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-09-25 12:18:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:18:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:55,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:55,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:55,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:55,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:55,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:55,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:55,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:55,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:55,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:55,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:55,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-25 12:18:55,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019162978] [2020-09-25 12:18:55,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:55,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:55,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034137832] [2020-09-25 12:18:55,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:55,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:55,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:55,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:55,804 INFO L87 Difference]: Start difference. First operand 6044 states and 7541 transitions. Second operand 3 states. [2020-09-25 12:18:56,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:56,091 INFO L93 Difference]: Finished difference Result 13829 states and 17340 transitions. [2020-09-25 12:18:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:56,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 303 [2020-09-25 12:18:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:56,108 INFO L225 Difference]: With dead ends: 13829 [2020-09-25 12:18:56,108 INFO L226 Difference]: Without dead ends: 5059 [2020-09-25 12:18:56,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2020-09-25 12:18:56,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 5057. [2020-09-25 12:18:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5057 states. [2020-09-25 12:18:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 6311 transitions. [2020-09-25 12:18:56,271 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 6311 transitions. Word has length 303 [2020-09-25 12:18:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:56,272 INFO L479 AbstractCegarLoop]: Abstraction has 5057 states and 6311 transitions. [2020-09-25 12:18:56,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 6311 transitions. [2020-09-25 12:18:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-25 12:18:56,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:56,283 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:56,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 12:18:56,283 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:56,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1287493642, now seen corresponding path program 1 times [2020-09-25 12:18:56,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:56,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158011421] [2020-09-25 12:18:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:56,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:56,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:56,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-09-25 12:18:56,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 12:18:56,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:56,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 242 [2020-09-25 12:18:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:18:56,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:56,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:56,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:56,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:56,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:56,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:56,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 12:18:56,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158011421] [2020-09-25 12:18:56,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:56,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:18:56,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622799902] [2020-09-25 12:18:56,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:18:56,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:56,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:18:56,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:18:56,823 INFO L87 Difference]: Start difference. First operand 5057 states and 6311 transitions. Second operand 4 states. [2020-09-25 12:18:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:57,446 INFO L93 Difference]: Finished difference Result 14281 states and 18011 transitions. [2020-09-25 12:18:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:18:57,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-09-25 12:18:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:57,461 INFO L225 Difference]: With dead ends: 14281 [2020-09-25 12:18:57,462 INFO L226 Difference]: Without dead ends: 9379 [2020-09-25 12:18:57,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:18:57,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9379 states. [2020-09-25 12:18:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9379 to 5002. [2020-09-25 12:18:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5002 states. [2020-09-25 12:18:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5002 states to 5002 states and 6171 transitions. [2020-09-25 12:18:57,630 INFO L78 Accepts]: Start accepts. Automaton has 5002 states and 6171 transitions. Word has length 324 [2020-09-25 12:18:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:57,630 INFO L479 AbstractCegarLoop]: Abstraction has 5002 states and 6171 transitions. [2020-09-25 12:18:57,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:18:57,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5002 states and 6171 transitions. [2020-09-25 12:18:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-09-25 12:18:57,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:57,637 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:57,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-25 12:18:57,638 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:57,639 INFO L82 PathProgramCache]: Analyzing trace with hash 49280603, now seen corresponding path program 1 times [2020-09-25 12:18:57,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:57,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106332090] [2020-09-25 12:18:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:57,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:57,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:58,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:58,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-09-25 12:18:58,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:18:58,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-09-25 12:18:58,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:58,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:58,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-09-25 12:18:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 12:18:58,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:18:58,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:18:58,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:58,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-09-25 12:18:58,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106332090] [2020-09-25 12:18:58,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:18:58,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:18:58,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273082383] [2020-09-25 12:18:58,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:18:58,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:58,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:18:58,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:58,496 INFO L87 Difference]: Start difference. First operand 5002 states and 6171 transitions. Second operand 3 states. [2020-09-25 12:18:58,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:58,773 INFO L93 Difference]: Finished difference Result 14561 states and 18020 transitions. [2020-09-25 12:18:58,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:18:58,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-09-25 12:18:58,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:58,786 INFO L225 Difference]: With dead ends: 14561 [2020-09-25 12:18:58,786 INFO L226 Difference]: Without dead ends: 9714 [2020-09-25 12:18:58,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:18:58,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9714 states. [2020-09-25 12:18:58,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9714 to 4997. [2020-09-25 12:18:58,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4997 states. [2020-09-25 12:18:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 6161 transitions. [2020-09-25 12:18:58,992 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 6161 transitions. Word has length 331 [2020-09-25 12:18:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:58,993 INFO L479 AbstractCegarLoop]: Abstraction has 4997 states and 6161 transitions. [2020-09-25 12:18:58,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:18:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 6161 transitions. [2020-09-25 12:18:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-09-25 12:18:59,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:59,000 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:18:59,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-25 12:18:59,000 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:59,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:59,001 INFO L82 PathProgramCache]: Analyzing trace with hash -522042299, now seen corresponding path program 1 times [2020-09-25 12:18:59,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:59,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86159208] [2020-09-25 12:18:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 12:18:59,057 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 12:18:59,058 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 12:18:59,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-25 12:18:59,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:18:59 BoogieIcfgContainer [2020-09-25 12:18:59,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:18:59,136 INFO L168 Benchmark]: Toolchain (without parser) took 39639.90 ms. Allocated memory was 140.0 MB in the beginning and 829.9 MB in the end (delta: 690.0 MB). Free memory was 102.7 MB in the beginning and 567.4 MB in the end (delta: -464.7 MB). Peak memory consumption was 225.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:59,136 INFO L168 Benchmark]: CDTParser took 0.18 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. [2020-09-25 12:18:59,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.90 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 179.7 MB in the end (delta: -77.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:59,137 INFO L168 Benchmark]: Boogie Preprocessor took 74.47 ms. Allocated memory is still 204.5 MB. Free memory was 179.7 MB in the beginning and 176.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:59,138 INFO L168 Benchmark]: RCFGBuilder took 1232.26 ms. Allocated memory is still 204.5 MB. Free memory was 176.6 MB in the beginning and 98.4 MB in the end (delta: 78.2 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:59,139 INFO L168 Benchmark]: TraceAbstraction took 37738.62 ms. Allocated memory was 204.5 MB in the beginning and 829.9 MB in the end (delta: 625.5 MB). Free memory was 98.4 MB in the beginning and 567.4 MB in the end (delta: -469.0 MB). Peak memory consumption was 156.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:59,141 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 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 583.90 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 179.7 MB in the end (delta: -77.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.47 ms. Allocated memory is still 204.5 MB. Free memory was 179.7 MB in the beginning and 176.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1232.26 ms. Allocated memory is still 204.5 MB. Free memory was 176.6 MB in the beginning and 98.4 MB in the end (delta: 78.2 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37738.62 ms. Allocated memory was 204.5 MB in the beginning and 829.9 MB in the end (delta: 625.5 MB). Free memory was 98.4 MB in the beginning and 567.4 MB in the end (delta: -469.0 MB). Peak memory consumption was 156.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L702] int s ; [L703] int tmp ; [L707] s = 8464 [L708] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int() ; [L21] int s__rwstate ; [L22] int s__init_buf___0 = 1; [L23] int s__debug = __VERIFIER_nondet_int() ; [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int() ; [L26] int s__options = __VERIFIER_nondet_int() ; [L27] int s__verify_mode = __VERIFIER_nondet_int() ; [L28] int s__session__peer = __VERIFIER_nondet_int() ; [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L30] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message ; [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength ; [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 = __VERIFIER_nondet_long() ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int tmp___10 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] unsigned long __cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] __cil_tmp56 = 256345 [L307] skip = 1 [L318] s__state = 8528 [L319] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L323] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L324] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L326] __cil_tmp57 = (unsigned long )s__options [L327] COND TRUE __cil_tmp57 + 2097152UL [L328] s__s3__tmp__use_rsa_tmp = 1 [L333] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(blastFlag == 3) [L365] COND FALSE !(ret <= 0) [L382] s__state = 8544 [L383] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND TRUE s__state == 8544 [L387] COND TRUE s__verify_mode + 1 [L388] COND TRUE s__session__peer != 0 [L389] COND TRUE s__verify_mode + 4 [L390] s__verify_mode = 123 [L391] skip = 1 [L392] s__s3__tmp__cert_request = 0 [L393] s__state = 8560 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND TRUE s__state == 8560 [L437] ret = __VERIFIER_nondet_int() [L438] COND FALSE !(ret <= 0) [L441] s__s3__tmp__next_state___0 = 8576 [L442] s__state = 8448 [L443] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND TRUE ! s__s3__tmp__reuse_message [L653] COND TRUE ! skip [L654] COND TRUE state == 8560 [L655] COND TRUE s__state == 8448 [L656] COND TRUE s__verify_mode != -1 [L657] COND TRUE s__verify_mode != -2 [L658] COND TRUE __cil_tmp61 != 9021 [L659] COND TRUE __cil_tmp58 != 4294967294 [L660] COND TRUE blastFlag != 4 [L661] COND TRUE tmp___7 != 1024 [L697] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 471 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.5s, OverallIterations: 25, TraceHistogramMax: 6, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15630 SDtfs, 10910 SDslu, 18153 SDs, 0 SdLazy, 3948 SolverSat, 633 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7942occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 24 MinimizatonAttempts, 28095 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 23.4s InterpolantComputationTime, 6122 NumberOfCodeBlocks, 6122 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 5765 ConstructedInterpolants, 0 QuantifiedInterpolants, 1961315 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 21 PerfectInterpolantSequences, 1867/1879 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...