/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:42:56,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:42:56,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:42:57,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:42:57,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:42:57,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:42:57,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:42:57,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:42:57,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:42:57,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:42:57,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:42:57,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:42:57,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:42:57,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:42:57,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:42:57,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:42:57,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:42:57,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:42:57,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:42:57,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:42:57,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:42:57,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:42:57,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:42:57,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:42:57,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:42:57,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:42:57,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:42:57,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:42:57,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:42:57,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:42:57,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:42:57,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:42:57,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:42:57,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:42:57,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:42:57,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:42:57,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:42:57,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:42:57,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:42:57,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:42:57,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:42:57,105 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 [2020-10-15 04:42:57,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:42:57,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:42:57,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:42:57,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:42:57,144 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:42:57,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:42:57,145 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:42:57,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:42:57,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:42:57,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:42:57,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:42:57,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:42:57,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:42:57,147 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:42:57,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:42:57,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:42:57,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:42:57,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:42:57,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:42:57,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:42:57,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:42:57,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:42:57,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:42:57,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:42:57,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:42:57,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:42:57,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:42:57,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:42:57,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:42:57,150 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:42:57,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:42:57,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:42:57,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:42:57,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:42:57,514 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:42:57,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-2.c [2020-10-15 04:42:57,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56d3d9675/81f86b6dd1da494097ad6abafa2d7a99/FLAGed03b165e [2020-10-15 04:42:58,200 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:42:58,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-2.c [2020-10-15 04:42:58,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56d3d9675/81f86b6dd1da494097ad6abafa2d7a99/FLAGed03b165e [2020-10-15 04:42:58,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56d3d9675/81f86b6dd1da494097ad6abafa2d7a99 [2020-10-15 04:42:58,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:42:58,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:42:58,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:42:58,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:42:58,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:42:58,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:58" (1/1) ... [2020-10-15 04:42:58,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc1a58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:58, skipping insertion in model container [2020-10-15 04:42:58,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:58" (1/1) ... [2020-10-15 04:42:58,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:42:58,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:42:59,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:42:59,146 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:42:59,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:42:59,301 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:42:59,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:59 WrapperNode [2020-10-15 04:42:59,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:42:59,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:42:59,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:42:59,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:42:59,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:59" (1/1) ... [2020-10-15 04:42:59,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:59" (1/1) ... [2020-10-15 04:42:59,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:59" (1/1) ... [2020-10-15 04:42:59,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:59" (1/1) ... [2020-10-15 04:42:59,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:59" (1/1) ... [2020-10-15 04:42:59,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:59" (1/1) ... [2020-10-15 04:42:59,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:59" (1/1) ... [2020-10-15 04:42:59,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:42:59,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:42:59,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:42:59,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:42:59,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:59" (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 [2020-10-15 04:42:59,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:42:59,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:42:59,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-15 04:42:59,508 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-15 04:42:59,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:42:59,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:42:59,509 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:42:59,509 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:42:59,509 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:42:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:42:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:42:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:42:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:42:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:42:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:42:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:42:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-15 04:42:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:42:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:42:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-15 04:42:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:42:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:42:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:42:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:42:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:42:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:42:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:42:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:42:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:42:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:42:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:42:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:42:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:42:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:42:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:42:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:42:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:42:59,950 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:43:00,673 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-15 04:43:00,673 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-15 04:43:00,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:43:00,699 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:43:00,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:43:00 BoogieIcfgContainer [2020-10-15 04:43:00,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:43:00,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:43:00,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:43:00,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:43:00,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:42:58" (1/3) ... [2020-10-15 04:43:00,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f38e2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:43:00, skipping insertion in model container [2020-10-15 04:43:00,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:59" (2/3) ... [2020-10-15 04:43:00,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f38e2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:43:00, skipping insertion in model container [2020-10-15 04:43:00,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:43:00" (3/3) ... [2020-10-15 04:43:00,714 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.16.i.cil-2.c [2020-10-15 04:43:00,727 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:43:00,737 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:43:00,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:43:00,785 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:43:00,785 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:43:00,785 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:43:00,785 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:43:00,786 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:43:00,786 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:43:00,786 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:43:00,786 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:43:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-10-15 04:43:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 04:43:00,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:00,826 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] [2020-10-15 04:43:00,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:00,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1150770581, now seen corresponding path program 1 times [2020-10-15 04:43:00,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:00,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469684102] [2020-10-15 04:43:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:01,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:01,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:01,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:02,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:02,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 04:43:02,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:43:02,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1308 [2020-10-15 04:43:02,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:02,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:02,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:43:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:43:02,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:43:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:02,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:02,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:02,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:43:02,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:02,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:02,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469684102] [2020-10-15 04:43:02,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:02,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:02,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983652457] [2020-10-15 04:43:02,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:02,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:02,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:02,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:02,509 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-10-15 04:43:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:03,294 INFO L93 Difference]: Finished difference Result 463 states and 792 transitions. [2020-10-15 04:43:03,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:03,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-15 04:43:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:03,312 INFO L225 Difference]: With dead ends: 463 [2020-10-15 04:43:03,312 INFO L226 Difference]: Without dead ends: 284 [2020-10-15 04:43:03,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-15 04:43:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2020-10-15 04:43:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-15 04:43:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 426 transitions. [2020-10-15 04:43:03,387 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 426 transitions. Word has length 50 [2020-10-15 04:43:03,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:03,388 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 426 transitions. [2020-10-15 04:43:03,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 426 transitions. [2020-10-15 04:43:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 04:43:03,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:03,393 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] [2020-10-15 04:43:03,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:43:03,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:03,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:03,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1009168811, now seen corresponding path program 1 times [2020-10-15 04:43:03,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:03,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969185286] [2020-10-15 04:43:03,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:03,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:03,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:03,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:04,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:04,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 04:43:04,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:43:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-15 04:43:04,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:04,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:43:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:43:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:04,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:04,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:04,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:43:04,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:04,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:43:04,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969185286] [2020-10-15 04:43:04,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:04,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:04,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713281898] [2020-10-15 04:43:04,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:04,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:04,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:04,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:04,240 INFO L87 Difference]: Start difference. First operand 284 states and 426 transitions. Second operand 4 states. [2020-10-15 04:43:04,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:04,775 INFO L93 Difference]: Finished difference Result 554 states and 853 transitions. [2020-10-15 04:43:04,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:04,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-15 04:43:04,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:04,779 INFO L225 Difference]: With dead ends: 554 [2020-10-15 04:43:04,780 INFO L226 Difference]: Without dead ends: 418 [2020-10-15 04:43:04,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-15 04:43:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-10-15 04:43:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-15 04:43:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 622 transitions. [2020-10-15 04:43:04,837 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 622 transitions. Word has length 67 [2020-10-15 04:43:04,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:04,837 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 622 transitions. [2020-10-15 04:43:04,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 622 transitions. [2020-10-15 04:43:04,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 04:43:04,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:04,849 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 04:43:04,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:43:04,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:04,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:04,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2112636429, now seen corresponding path program 1 times [2020-10-15 04:43:04,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:04,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076968353] [2020-10-15 04:43:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:05,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:05,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 04:43:05,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:43:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-15 04:43:05,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:05,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:43:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 04:43:05,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:05,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:05,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:05,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:05,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:05,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:05,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:43:05,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:05,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:05,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:05,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:05,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:43:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:43:05,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076968353] [2020-10-15 04:43:05,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:05,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:05,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471495615] [2020-10-15 04:43:05,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:05,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:05,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:05,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:05,761 INFO L87 Difference]: Start difference. First operand 418 states and 622 transitions. Second operand 4 states. [2020-10-15 04:43:06,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:06,287 INFO L93 Difference]: Finished difference Result 822 states and 1245 transitions. [2020-10-15 04:43:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:06,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-15 04:43:06,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:06,293 INFO L225 Difference]: With dead ends: 822 [2020-10-15 04:43:06,294 INFO L226 Difference]: Without dead ends: 552 [2020-10-15 04:43:06,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:06,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-10-15 04:43:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2020-10-15 04:43:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-10-15 04:43:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 819 transitions. [2020-10-15 04:43:06,324 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 819 transitions. Word has length 89 [2020-10-15 04:43:06,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:06,325 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 819 transitions. [2020-10-15 04:43:06,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:06,328 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 819 transitions. [2020-10-15 04:43:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 04:43:06,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:06,332 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:43:06,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:43:06,333 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:06,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:06,333 INFO L82 PathProgramCache]: Analyzing trace with hash -381540787, now seen corresponding path program 1 times [2020-10-15 04:43:06,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:06,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095295649] [2020-10-15 04:43:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:06,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:06,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:09,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 04:43:09,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:09,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3328 [2020-10-15 04:43:09,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:09,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 04:43:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:43:09,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:09,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:09,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:09,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:09,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:43:09,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:09,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 04:43:09,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095295649] [2020-10-15 04:43:09,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:09,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:09,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68668987] [2020-10-15 04:43:09,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:09,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:09,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:09,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:09,834 INFO L87 Difference]: Start difference. First operand 552 states and 819 transitions. Second operand 4 states. [2020-10-15 04:43:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:10,371 INFO L93 Difference]: Finished difference Result 1090 states and 1639 transitions. [2020-10-15 04:43:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:10,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-15 04:43:10,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:10,378 INFO L225 Difference]: With dead ends: 1090 [2020-10-15 04:43:10,379 INFO L226 Difference]: Without dead ends: 686 [2020-10-15 04:43:10,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-10-15 04:43:10,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2020-10-15 04:43:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-10-15 04:43:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1017 transitions. [2020-10-15 04:43:10,405 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1017 transitions. Word has length 113 [2020-10-15 04:43:10,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:10,406 INFO L479 AbstractCegarLoop]: Abstraction has 686 states and 1017 transitions. [2020-10-15 04:43:10,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1017 transitions. [2020-10-15 04:43:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-15 04:43:10,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:10,415 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-15 04:43:10,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:43:10,415 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:10,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:10,416 INFO L82 PathProgramCache]: Analyzing trace with hash 772738769, now seen corresponding path program 1 times [2020-10-15 04:43:10,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:10,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659425456] [2020-10-15 04:43:10,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:10,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:11,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:14,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:14,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-15 04:43:14,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:14,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3663 [2020-10-15 04:43:14,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:14,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:43:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-15 04:43:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:43:14,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:14,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:14,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:14,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:14,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:14,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:14,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:14,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-15 04:43:14,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659425456] [2020-10-15 04:43:14,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:14,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:43:14,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809802416] [2020-10-15 04:43:14,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:43:14,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:14,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:43:14,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:14,232 INFO L87 Difference]: Start difference. First operand 686 states and 1017 transitions. Second operand 4 states. [2020-10-15 04:43:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:14,780 INFO L93 Difference]: Finished difference Result 1358 states and 2035 transitions. [2020-10-15 04:43:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:43:14,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-10-15 04:43:14,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:14,787 INFO L225 Difference]: With dead ends: 1358 [2020-10-15 04:43:14,788 INFO L226 Difference]: Without dead ends: 820 [2020-10-15 04:43:14,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:43:14,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-10-15 04:43:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2020-10-15 04:43:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-15 04:43:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1216 transitions. [2020-10-15 04:43:14,814 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1216 transitions. Word has length 142 [2020-10-15 04:43:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:14,815 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 1216 transitions. [2020-10-15 04:43:14,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:43:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1216 transitions. [2020-10-15 04:43:14,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-15 04:43:14,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:14,819 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2020-10-15 04:43:14,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:43:14,819 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:14,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:14,820 INFO L82 PathProgramCache]: Analyzing trace with hash 787935694, now seen corresponding path program 1 times [2020-10-15 04:43:14,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:14,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713398252] [2020-10-15 04:43:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:14,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:15,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:19,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:19,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-15 04:43:19,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-15 04:43:19,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:19,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:43:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-15 04:43:19,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:20,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:20,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:20,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:20,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:20,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:20,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:20,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:20,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:20,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-15 04:43:20,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713398252] [2020-10-15 04:43:20,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:20,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:43:20,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386110631] [2020-10-15 04:43:20,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:43:20,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:20,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:43:20,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:43:20,328 INFO L87 Difference]: Start difference. First operand 820 states and 1216 transitions. Second operand 8 states. [2020-10-15 04:43:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:22,386 INFO L93 Difference]: Finished difference Result 3356 states and 5080 transitions. [2020-10-15 04:43:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:43:22,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2020-10-15 04:43:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:22,403 INFO L225 Difference]: With dead ends: 3356 [2020-10-15 04:43:22,404 INFO L226 Difference]: Without dead ends: 2550 [2020-10-15 04:43:22,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:43:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2020-10-15 04:43:22,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 1900. [2020-10-15 04:43:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1900 states. [2020-10-15 04:43:22,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2981 transitions. [2020-10-15 04:43:22,495 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2981 transitions. Word has length 173 [2020-10-15 04:43:22,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:22,496 INFO L479 AbstractCegarLoop]: Abstraction has 1900 states and 2981 transitions. [2020-10-15 04:43:22,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:43:22,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2981 transitions. [2020-10-15 04:43:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:22,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:22,502 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-10-15 04:43:22,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:43:22,503 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:22,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:22,503 INFO L82 PathProgramCache]: Analyzing trace with hash -437021091, now seen corresponding path program 1 times [2020-10-15 04:43:22,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:22,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344093982] [2020-10-15 04:43:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:22,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:22,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:22,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:24,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:27,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:27,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:27,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:43:27,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:43:27,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:27,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-15 04:43:27,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 04:43:27,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:27,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:27,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:27,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:27,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:27,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:27,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:43:27,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:27,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:27,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-15 04:43:27,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344093982] [2020-10-15 04:43:27,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:27,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:27,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128087347] [2020-10-15 04:43:27,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:27,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:27,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:27,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:27,698 INFO L87 Difference]: Start difference. First operand 1900 states and 2981 transitions. Second operand 5 states. [2020-10-15 04:43:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:28,917 INFO L93 Difference]: Finished difference Result 5060 states and 7876 transitions. [2020-10-15 04:43:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:28,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:28,934 INFO L225 Difference]: With dead ends: 5060 [2020-10-15 04:43:28,934 INFO L226 Difference]: Without dead ends: 3174 [2020-10-15 04:43:28,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:43:28,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2020-10-15 04:43:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2212. [2020-10-15 04:43:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2020-10-15 04:43:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3509 transitions. [2020-10-15 04:43:29,030 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3509 transitions. Word has length 187 [2020-10-15 04:43:29,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:29,031 INFO L479 AbstractCegarLoop]: Abstraction has 2212 states and 3509 transitions. [2020-10-15 04:43:29,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3509 transitions. [2020-10-15 04:43:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:29,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:29,039 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-10-15 04:43:29,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:43:29,040 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:29,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:29,040 INFO L82 PathProgramCache]: Analyzing trace with hash -866679397, now seen corresponding path program 1 times [2020-10-15 04:43:29,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:29,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084598323] [2020-10-15 04:43:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:29,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:29,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:29,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:34,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:34,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:34,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:34,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:43:34,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:34,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:43:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 04:43:34,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:34,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:34,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:34,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:34,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:34,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:43:34,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:34,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:34,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-15 04:43:34,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084598323] [2020-10-15 04:43:34,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:34,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:34,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175967554] [2020-10-15 04:43:34,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:34,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:34,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:34,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:34,190 INFO L87 Difference]: Start difference. First operand 2212 states and 3509 transitions. Second operand 5 states. [2020-10-15 04:43:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:35,672 INFO L93 Difference]: Finished difference Result 4028 states and 6319 transitions. [2020-10-15 04:43:35,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:35,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:35,693 INFO L225 Difference]: With dead ends: 4028 [2020-10-15 04:43:35,693 INFO L226 Difference]: Without dead ends: 2874 [2020-10-15 04:43:35,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:43:35,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-10-15 04:43:35,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2326. [2020-10-15 04:43:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2326 states. [2020-10-15 04:43:35,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 3701 transitions. [2020-10-15 04:43:35,843 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 3701 transitions. Word has length 187 [2020-10-15 04:43:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:35,843 INFO L479 AbstractCegarLoop]: Abstraction has 2326 states and 3701 transitions. [2020-10-15 04:43:35,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 3701 transitions. [2020-10-15 04:43:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:35,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:35,859 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-10-15 04:43:35,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:43:35,859 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:35,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:35,860 INFO L82 PathProgramCache]: Analyzing trace with hash -157487331, now seen corresponding path program 2 times [2020-10-15 04:43:35,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:35,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103623307] [2020-10-15 04:43:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:40,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:40,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:40,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:40,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 04:43:40,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:40,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:40,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:40,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:43:40,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:43:40,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:41,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:41,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:41,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:41,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:41,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:41,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-15 04:43:41,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103623307] [2020-10-15 04:43:41,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:41,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:41,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636837422] [2020-10-15 04:43:41,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:41,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:41,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:41,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:41,085 INFO L87 Difference]: Start difference. First operand 2326 states and 3701 transitions. Second operand 5 states. [2020-10-15 04:43:41,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:41,918 INFO L93 Difference]: Finished difference Result 6913 states and 10992 transitions. [2020-10-15 04:43:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:41,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:41,943 INFO L225 Difference]: With dead ends: 6913 [2020-10-15 04:43:41,943 INFO L226 Difference]: Without dead ends: 4601 [2020-10-15 04:43:41,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:41,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-15 04:43:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4599. [2020-10-15 04:43:42,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4599 states. [2020-10-15 04:43:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 7259 transitions. [2020-10-15 04:43:42,167 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 7259 transitions. Word has length 187 [2020-10-15 04:43:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:42,167 INFO L479 AbstractCegarLoop]: Abstraction has 4599 states and 7259 transitions. [2020-10-15 04:43:42,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 7259 transitions. [2020-10-15 04:43:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:42,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:42,181 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-10-15 04:43:42,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:43:42,181 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:42,181 INFO L82 PathProgramCache]: Analyzing trace with hash -2051821217, now seen corresponding path program 1 times [2020-10-15 04:43:42,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:42,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289732026] [2020-10-15 04:43:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:42,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:42,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:47,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:47,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:47,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:47,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-15 04:43:47,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:47,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 04:43:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 04:43:47,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:47,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:47,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:47,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:47,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:47,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:47,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:47,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-15 04:43:47,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289732026] [2020-10-15 04:43:47,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:47,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:47,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639397148] [2020-10-15 04:43:47,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:47,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:47,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:47,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:47,397 INFO L87 Difference]: Start difference. First operand 4599 states and 7259 transitions. Second operand 5 states. [2020-10-15 04:43:48,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:48,574 INFO L93 Difference]: Finished difference Result 8203 states and 12781 transitions. [2020-10-15 04:43:48,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:48,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:48,613 INFO L225 Difference]: With dead ends: 8203 [2020-10-15 04:43:48,613 INFO L226 Difference]: Without dead ends: 5693 [2020-10-15 04:43:48,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:43:48,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2020-10-15 04:43:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 4635. [2020-10-15 04:43:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4635 states. [2020-10-15 04:43:48,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 7319 transitions. [2020-10-15 04:43:48,839 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 7319 transitions. Word has length 187 [2020-10-15 04:43:48,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:48,840 INFO L479 AbstractCegarLoop]: Abstraction has 4635 states and 7319 transitions. [2020-10-15 04:43:48,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:48,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 7319 transitions. [2020-10-15 04:43:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:48,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:48,864 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-10-15 04:43:48,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:43:48,865 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:48,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:48,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1805508705, now seen corresponding path program 1 times [2020-10-15 04:43:48,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:48,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250296536] [2020-10-15 04:43:48,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:48,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:48,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:49,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:53,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:53,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:43:53,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:53,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:43:53,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:53,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:53,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:53,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 04:43:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 04:43:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:53,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:53,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:53,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:53,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:53,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:53,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:53,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:53,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:53,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-15 04:43:54,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250296536] [2020-10-15 04:43:54,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:54,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:54,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794760505] [2020-10-15 04:43:54,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:54,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:54,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:54,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:54,040 INFO L87 Difference]: Start difference. First operand 4635 states and 7319 transitions. Second operand 5 states. [2020-10-15 04:43:55,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:55,184 INFO L93 Difference]: Finished difference Result 8239 states and 12829 transitions. [2020-10-15 04:43:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:55,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-15 04:43:55,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:55,215 INFO L225 Difference]: With dead ends: 8239 [2020-10-15 04:43:55,215 INFO L226 Difference]: Without dead ends: 5693 [2020-10-15 04:43:55,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:43:55,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2020-10-15 04:43:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 4635. [2020-10-15 04:43:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4635 states. [2020-10-15 04:43:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 7319 transitions. [2020-10-15 04:43:55,386 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 7319 transitions. Word has length 187 [2020-10-15 04:43:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:55,386 INFO L479 AbstractCegarLoop]: Abstraction has 4635 states and 7319 transitions. [2020-10-15 04:43:55,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 7319 transitions. [2020-10-15 04:43:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 04:43:55,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:55,399 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-10-15 04:43:55,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:43:55,399 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:55,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:55,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1890231327, now seen corresponding path program 2 times [2020-10-15 04:43:55,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:55,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367342071] [2020-10-15 04:43:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:55,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:55,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:00,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:00,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:00,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-15 04:44:00,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:44:00,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:44:00,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:00,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:44:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-15 04:44:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:44:00,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:00,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:00,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:00,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:00,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:00,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:00,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-15 04:44:00,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367342071] [2020-10-15 04:44:00,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:00,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:44:00,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810811907] [2020-10-15 04:44:00,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:44:00,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:00,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:44:00,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:00,530 INFO L87 Difference]: Start difference. First operand 4635 states and 7319 transitions. Second operand 4 states. [2020-10-15 04:44:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:01,154 INFO L93 Difference]: Finished difference Result 9251 states and 14680 transitions. [2020-10-15 04:44:01,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:44:01,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-10-15 04:44:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:01,169 INFO L225 Difference]: With dead ends: 9251 [2020-10-15 04:44:01,169 INFO L226 Difference]: Without dead ends: 5404 [2020-10-15 04:44:01,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:01,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2020-10-15 04:44:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5404. [2020-10-15 04:44:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5404 states. [2020-10-15 04:44:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 8537 transitions. [2020-10-15 04:44:01,322 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 8537 transitions. Word has length 187 [2020-10-15 04:44:01,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:01,323 INFO L479 AbstractCegarLoop]: Abstraction has 5404 states and 8537 transitions. [2020-10-15 04:44:01,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:44:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 8537 transitions. [2020-10-15 04:44:01,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-15 04:44:01,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:01,337 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 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] [2020-10-15 04:44:01,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:44:01,337 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:01,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:01,338 INFO L82 PathProgramCache]: Analyzing trace with hash -615004304, now seen corresponding path program 1 times [2020-10-15 04:44:01,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:01,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484875196] [2020-10-15 04:44:01,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:01,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:01,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:01,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:01,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:04,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:06,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:06,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-15 04:44:06,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 04:44:06,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:06,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:06,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-15 04:44:06,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 04:44:06,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:06,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:06,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:06,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:06,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:06,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:06,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:06,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:06,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:06,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-15 04:44:06,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484875196] [2020-10-15 04:44:06,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:06,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:06,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946518906] [2020-10-15 04:44:06,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:06,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:06,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:06,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:06,486 INFO L87 Difference]: Start difference. First operand 5404 states and 8537 transitions. Second operand 5 states. [2020-10-15 04:44:07,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:07,613 INFO L93 Difference]: Finished difference Result 9608 states and 14951 transitions. [2020-10-15 04:44:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:07,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-15 04:44:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:07,630 INFO L225 Difference]: With dead ends: 9608 [2020-10-15 04:44:07,631 INFO L226 Difference]: Without dead ends: 6638 [2020-10-15 04:44:07,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:44:07,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6638 states. [2020-10-15 04:44:07,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6638 to 5460. [2020-10-15 04:44:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5460 states. [2020-10-15 04:44:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5460 states to 5460 states and 8621 transitions. [2020-10-15 04:44:07,789 INFO L78 Accepts]: Start accepts. Automaton has 5460 states and 8621 transitions. Word has length 219 [2020-10-15 04:44:07,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:07,789 INFO L479 AbstractCegarLoop]: Abstraction has 5460 states and 8621 transitions. [2020-10-15 04:44:07,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:07,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5460 states and 8621 transitions. [2020-10-15 04:44:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-15 04:44:07,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:07,804 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 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] [2020-10-15 04:44:07,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:44:07,804 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:07,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:07,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1387934102, now seen corresponding path program 2 times [2020-10-15 04:44:07,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:07,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104198309] [2020-10-15 04:44:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:07,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:07,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:12,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-15 04:44:12,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:12,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-15 04:44:12,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:12,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:44:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:44:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:12,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:12,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:12,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:12,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:12,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:12,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-15 04:44:12,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104198309] [2020-10-15 04:44:12,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:12,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:12,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121220540] [2020-10-15 04:44:12,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:12,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:12,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:12,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:12,979 INFO L87 Difference]: Start difference. First operand 5460 states and 8621 transitions. Second operand 5 states. [2020-10-15 04:44:14,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:14,058 INFO L93 Difference]: Finished difference Result 9664 states and 15021 transitions. [2020-10-15 04:44:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:14,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-15 04:44:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:14,076 INFO L225 Difference]: With dead ends: 9664 [2020-10-15 04:44:14,076 INFO L226 Difference]: Without dead ends: 6638 [2020-10-15 04:44:14,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:44:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6638 states. [2020-10-15 04:44:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6638 to 5488. [2020-10-15 04:44:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5488 states. [2020-10-15 04:44:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 8663 transitions. [2020-10-15 04:44:14,234 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 8663 transitions. Word has length 219 [2020-10-15 04:44:14,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:14,235 INFO L479 AbstractCegarLoop]: Abstraction has 5488 states and 8663 transitions. [2020-10-15 04:44:14,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:14,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 8663 transitions. [2020-10-15 04:44:14,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-15 04:44:14,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:14,251 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 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] [2020-10-15 04:44:14,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:44:14,251 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:14,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:14,251 INFO L82 PathProgramCache]: Analyzing trace with hash 835463216, now seen corresponding path program 3 times [2020-10-15 04:44:14,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:14,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594893343] [2020-10-15 04:44:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:14,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:19,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:19,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-15 04:44:19,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:44:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-15 04:44:19,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:19,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:44:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-15 04:44:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:44:19,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:19,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:19,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:19,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:19,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:19,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:44:19,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:19,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:19,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-15 04:44:19,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594893343] [2020-10-15 04:44:19,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:19,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:44:19,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065337077] [2020-10-15 04:44:19,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:44:19,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:44:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:19,439 INFO L87 Difference]: Start difference. First operand 5488 states and 8663 transitions. Second operand 4 states. [2020-10-15 04:44:20,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:20,067 INFO L93 Difference]: Finished difference Result 10957 states and 17368 transitions. [2020-10-15 04:44:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:44:20,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2020-10-15 04:44:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:20,092 INFO L225 Difference]: With dead ends: 10957 [2020-10-15 04:44:20,092 INFO L226 Difference]: Without dead ends: 6269 [2020-10-15 04:44:20,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:20,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2020-10-15 04:44:20,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 6269. [2020-10-15 04:44:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6269 states. [2020-10-15 04:44:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 9903 transitions. [2020-10-15 04:44:20,267 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 9903 transitions. Word has length 219 [2020-10-15 04:44:20,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:20,267 INFO L479 AbstractCegarLoop]: Abstraction has 6269 states and 9903 transitions. [2020-10-15 04:44:20,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:44:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 9903 transitions. [2020-10-15 04:44:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-15 04:44:20,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:20,282 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 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] [2020-10-15 04:44:20,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:44:20,283 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:20,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:20,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1558829722, now seen corresponding path program 1 times [2020-10-15 04:44:20,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:20,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857429326] [2020-10-15 04:44:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:20,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:20,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:25,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:25,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-15 04:44:25,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:25,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-15 04:44:25,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:25,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:44:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-15 04:44:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:44:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:25,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:25,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:25,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:25,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:25,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-15 04:44:25,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857429326] [2020-10-15 04:44:25,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:25,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:44:25,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313770710] [2020-10-15 04:44:25,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:44:25,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:25,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:44:25,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:25,473 INFO L87 Difference]: Start difference. First operand 6269 states and 9903 transitions. Second operand 4 states. [2020-10-15 04:44:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:26,088 INFO L93 Difference]: Finished difference Result 12519 states and 19848 transitions. [2020-10-15 04:44:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:44:26,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2020-10-15 04:44:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:26,102 INFO L225 Difference]: With dead ends: 12519 [2020-10-15 04:44:26,103 INFO L226 Difference]: Without dead ends: 7050 [2020-10-15 04:44:26,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7050 states. [2020-10-15 04:44:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7050 to 7050. [2020-10-15 04:44:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7050 states. [2020-10-15 04:44:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 11147 transitions. [2020-10-15 04:44:26,307 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 11147 transitions. Word has length 221 [2020-10-15 04:44:26,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:26,308 INFO L479 AbstractCegarLoop]: Abstraction has 7050 states and 11147 transitions. [2020-10-15 04:44:26,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:44:26,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 11147 transitions. [2020-10-15 04:44:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-15 04:44:26,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:26,328 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 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] [2020-10-15 04:44:26,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:44:26,328 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:26,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:26,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1681615504, now seen corresponding path program 1 times [2020-10-15 04:44:26,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:26,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684530497] [2020-10-15 04:44:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:26,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:26,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:26,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:31,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:31,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:31,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-15 04:44:31,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:44:31,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:44:31,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:31,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:31,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:44:31,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-15 04:44:31,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:44:31,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:31,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:31,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:31,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:31,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:31,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:31,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:31,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:31,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:31,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:31,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:31,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2020-10-15 04:44:31,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684530497] [2020-10-15 04:44:31,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:31,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:44:31,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849617899] [2020-10-15 04:44:31,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:44:31,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:31,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:44:31,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:31,507 INFO L87 Difference]: Start difference. First operand 7050 states and 11147 transitions. Second operand 4 states. [2020-10-15 04:44:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:32,116 INFO L93 Difference]: Finished difference Result 14081 states and 22336 transitions. [2020-10-15 04:44:32,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:44:32,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 254 [2020-10-15 04:44:32,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:32,132 INFO L225 Difference]: With dead ends: 14081 [2020-10-15 04:44:32,132 INFO L226 Difference]: Without dead ends: 7831 [2020-10-15 04:44:32,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2020-10-15 04:44:32,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 7831. [2020-10-15 04:44:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7831 states. [2020-10-15 04:44:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 12395 transitions. [2020-10-15 04:44:32,383 INFO L78 Accepts]: Start accepts. Automaton has 7831 states and 12395 transitions. Word has length 254 [2020-10-15 04:44:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:32,384 INFO L479 AbstractCegarLoop]: Abstraction has 7831 states and 12395 transitions. [2020-10-15 04:44:32,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:44:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7831 states and 12395 transitions. [2020-10-15 04:44:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-15 04:44:32,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:32,405 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 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] [2020-10-15 04:44:32,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:44:32,406 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:32,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:32,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1719104734, now seen corresponding path program 1 times [2020-10-15 04:44:32,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:32,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138036006] [2020-10-15 04:44:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:33,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:33,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:37,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:37,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-15 04:44:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:44:37,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:37,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:44:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:44:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:37,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:37,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:37,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:37,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:37,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:44:37,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:37,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:37,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:44:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-10-15 04:44:37,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138036006] [2020-10-15 04:44:37,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:37,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:37,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311734492] [2020-10-15 04:44:37,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:37,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:37,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:37,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:37,662 INFO L87 Difference]: Start difference. First operand 7831 states and 12395 transitions. Second operand 5 states. [2020-10-15 04:44:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:38,865 INFO L93 Difference]: Finished difference Result 13835 states and 21541 transitions. [2020-10-15 04:44:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:38,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2020-10-15 04:44:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:38,885 INFO L225 Difference]: With dead ends: 13835 [2020-10-15 04:44:38,885 INFO L226 Difference]: Without dead ends: 9473 [2020-10-15 04:44:38,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:44:38,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9473 states. [2020-10-15 04:44:39,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9473 to 7931. [2020-10-15 04:44:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7931 states. [2020-10-15 04:44:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7931 states to 7931 states and 12575 transitions. [2020-10-15 04:44:39,103 INFO L78 Accepts]: Start accepts. Automaton has 7931 states and 12575 transitions. Word has length 289 [2020-10-15 04:44:39,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:39,103 INFO L479 AbstractCegarLoop]: Abstraction has 7931 states and 12575 transitions. [2020-10-15 04:44:39,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 7931 states and 12575 transitions. [2020-10-15 04:44:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-15 04:44:39,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:39,116 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 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] [2020-10-15 04:44:39,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:44:39,116 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:39,117 INFO L82 PathProgramCache]: Analyzing trace with hash -587905194, now seen corresponding path program 1 times [2020-10-15 04:44:39,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:39,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485255180] [2020-10-15 04:44:39,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:39,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:39,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:40,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:41,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:41,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-15 04:44:41,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:41,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2098 [2020-10-15 04:44:41,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:41,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:44:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-15 04:44:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:44:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:41,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:41,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:41,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:41,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:44:41,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:41,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:41,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:41,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:41,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:41,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2020-10-15 04:44:41,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485255180] [2020-10-15 04:44:41,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:41,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:44:41,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011823726] [2020-10-15 04:44:41,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:44:41,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:41,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:44:41,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:41,383 INFO L87 Difference]: Start difference. First operand 7931 states and 12575 transitions. Second operand 4 states. [2020-10-15 04:44:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:42,003 INFO L93 Difference]: Finished difference Result 15843 states and 25192 transitions. [2020-10-15 04:44:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:44:42,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 289 [2020-10-15 04:44:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:42,015 INFO L225 Difference]: With dead ends: 15843 [2020-10-15 04:44:42,015 INFO L226 Difference]: Without dead ends: 8722 [2020-10-15 04:44:42,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:42,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8722 states. [2020-10-15 04:44:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8722 to 8722. [2020-10-15 04:44:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8722 states. [2020-10-15 04:44:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8722 states to 8722 states and 13845 transitions. [2020-10-15 04:44:42,224 INFO L78 Accepts]: Start accepts. Automaton has 8722 states and 13845 transitions. Word has length 289 [2020-10-15 04:44:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:42,225 INFO L479 AbstractCegarLoop]: Abstraction has 8722 states and 13845 transitions. [2020-10-15 04:44:42,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:44:42,225 INFO L276 IsEmpty]: Start isEmpty. Operand 8722 states and 13845 transitions. [2020-10-15 04:44:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-15 04:44:42,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:42,239 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2020-10-15 04:44:42,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:44:42,239 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:42,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:42,240 INFO L82 PathProgramCache]: Analyzing trace with hash -916794313, now seen corresponding path program 1 times [2020-10-15 04:44:42,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:42,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193599753] [2020-10-15 04:44:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:42,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:47,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:47,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-15 04:44:47,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:44:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 04:44:47,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:47,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:47,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:44:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:44:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 284 [2020-10-15 04:44:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:47,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:47,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:47,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:47,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:47,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:47,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:47,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:47,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 314 proven. 426 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2020-10-15 04:44:47,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193599753] [2020-10-15 04:44:47,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:44:47,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:44:47,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744542410] [2020-10-15 04:44:47,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:44:47,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:47,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:44:47,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:44:47,957 INFO L87 Difference]: Start difference. First operand 8722 states and 13845 transitions. Second operand 10 states. [2020-10-15 04:44:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:50,452 INFO L93 Difference]: Finished difference Result 21686 states and 34333 transitions. [2020-10-15 04:44:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:44:50,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 328 [2020-10-15 04:44:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:50,475 INFO L225 Difference]: With dead ends: 21686 [2020-10-15 04:44:50,475 INFO L226 Difference]: Without dead ends: 12983 [2020-10-15 04:44:50,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:44:50,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2020-10-15 04:44:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12451. [2020-10-15 04:44:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12451 states. [2020-10-15 04:44:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12451 states to 12451 states and 19828 transitions. [2020-10-15 04:44:50,753 INFO L78 Accepts]: Start accepts. Automaton has 12451 states and 19828 transitions. Word has length 328 [2020-10-15 04:44:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:50,753 INFO L479 AbstractCegarLoop]: Abstraction has 12451 states and 19828 transitions. [2020-10-15 04:44:50,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:44:50,754 INFO L276 IsEmpty]: Start isEmpty. Operand 12451 states and 19828 transitions. [2020-10-15 04:44:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-15 04:44:50,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:50,770 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2020-10-15 04:44:50,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:44:50,771 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:50,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:50,771 INFO L82 PathProgramCache]: Analyzing trace with hash -668647819, now seen corresponding path program 1 times [2020-10-15 04:44:50,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:50,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419715710] [2020-10-15 04:44:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:50,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:55,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:55,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-15 04:44:55,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:55,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-15 04:44:55,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:55,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:55,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:44:55,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-15 04:44:55,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 04:44:55,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:55,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:55,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:55,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:55,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:55,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:44:55,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:55,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2020-10-15 04:44:55,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419715710] [2020-10-15 04:44:55,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:55,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:44:55,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313718888] [2020-10-15 04:44:55,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:44:55,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:55,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:44:55,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:55,974 INFO L87 Difference]: Start difference. First operand 12451 states and 19828 transitions. Second operand 4 states. [2020-10-15 04:44:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:56,620 INFO L93 Difference]: Finished difference Result 24199 states and 38592 transitions. [2020-10-15 04:44:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:44:56,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-10-15 04:44:56,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:56,634 INFO L225 Difference]: With dead ends: 24199 [2020-10-15 04:44:56,634 INFO L226 Difference]: Without dead ends: 12897 [2020-10-15 04:44:56,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:44:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12897 states. [2020-10-15 04:44:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12897 to 12897. [2020-10-15 04:44:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12897 states. [2020-10-15 04:44:56,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12897 states to 12897 states and 20515 transitions. [2020-10-15 04:44:56,861 INFO L78 Accepts]: Start accepts. Automaton has 12897 states and 20515 transitions. Word has length 328 [2020-10-15 04:44:56,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:56,861 INFO L479 AbstractCegarLoop]: Abstraction has 12897 states and 20515 transitions. [2020-10-15 04:44:56,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:44:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 12897 states and 20515 transitions. [2020-10-15 04:44:56,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-15 04:44:56,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:56,876 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 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] [2020-10-15 04:44:56,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:44:56,876 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:56,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:56,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1070693565, now seen corresponding path program 1 times [2020-10-15 04:44:56,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:56,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235303640] [2020-10-15 04:44:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:01,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-15 04:45:01,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:45:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 04:45:01,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:01,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-15 04:45:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:45:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:02,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:02,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:02,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:02,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:02,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:02,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2020-10-15 04:45:02,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235303640] [2020-10-15 04:45:02,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:02,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:45:02,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668762911] [2020-10-15 04:45:02,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:02,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:02,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:02,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:02,091 INFO L87 Difference]: Start difference. First operand 12897 states and 20515 transitions. Second operand 4 states. [2020-10-15 04:45:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:02,761 INFO L93 Difference]: Finished difference Result 18251 states and 28990 transitions. [2020-10-15 04:45:02,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:45:02,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 369 [2020-10-15 04:45:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:02,780 INFO L225 Difference]: With dead ends: 18251 [2020-10-15 04:45:02,781 INFO L226 Difference]: Without dead ends: 13343 [2020-10-15 04:45:02,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:02,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13343 states. [2020-10-15 04:45:03,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13343 to 13343. [2020-10-15 04:45:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13343 states. [2020-10-15 04:45:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13343 states to 13343 states and 21228 transitions. [2020-10-15 04:45:03,038 INFO L78 Accepts]: Start accepts. Automaton has 13343 states and 21228 transitions. Word has length 369 [2020-10-15 04:45:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:03,039 INFO L479 AbstractCegarLoop]: Abstraction has 13343 states and 21228 transitions. [2020-10-15 04:45:03,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:45:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 13343 states and 21228 transitions. [2020-10-15 04:45:03,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-15 04:45:03,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:03,055 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2020-10-15 04:45:03,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:45:03,056 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:03,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:03,056 INFO L82 PathProgramCache]: Analyzing trace with hash -182486721, now seen corresponding path program 1 times [2020-10-15 04:45:03,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:03,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154189606] [2020-10-15 04:45:03,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:03,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:08,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-15 04:45:08,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:45:08,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-15 04:45:08,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:08,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 04:45:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:45:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 368 [2020-10-15 04:45:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:09,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:09,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:09,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:09,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:09,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:45:09,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:09,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:09,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:09,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 382 proven. 918 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2020-10-15 04:45:09,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154189606] [2020-10-15 04:45:09,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:09,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 04:45:09,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085267589] [2020-10-15 04:45:09,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:45:09,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:09,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:45:09,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:45:09,822 INFO L87 Difference]: Start difference. First operand 13343 states and 21228 transitions. Second operand 12 states. [2020-10-15 04:45:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:13,518 INFO L93 Difference]: Finished difference Result 37032 states and 58331 transitions. [2020-10-15 04:45:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 04:45:13,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 412 [2020-10-15 04:45:13,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:13,553 INFO L225 Difference]: With dead ends: 37032 [2020-10-15 04:45:13,554 INFO L226 Difference]: Without dead ends: 27481 [2020-10-15 04:45:13,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 14 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-15 04:45:13,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27481 states. [2020-10-15 04:45:13,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27481 to 22625. [2020-10-15 04:45:13,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22625 states. [2020-10-15 04:45:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22625 states to 22625 states and 35920 transitions. [2020-10-15 04:45:14,021 INFO L78 Accepts]: Start accepts. Automaton has 22625 states and 35920 transitions. Word has length 412 [2020-10-15 04:45:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:14,022 INFO L479 AbstractCegarLoop]: Abstraction has 22625 states and 35920 transitions. [2020-10-15 04:45:14,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 04:45:14,022 INFO L276 IsEmpty]: Start isEmpty. Operand 22625 states and 35920 transitions. [2020-10-15 04:45:14,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-15 04:45:14,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:14,045 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2020-10-15 04:45:14,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:45:14,046 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:14,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:14,046 INFO L82 PathProgramCache]: Analyzing trace with hash 65659773, now seen corresponding path program 1 times [2020-10-15 04:45:14,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:14,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402133790] [2020-10-15 04:45:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:16,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:19,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:19,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-15 04:45:19,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:45:19,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 04:45:19,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:19,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 04:45:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:45:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 396 [2020-10-15 04:45:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:19,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:19,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:19,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:19,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:19,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:19,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:45:19,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:19,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:20,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 32 proven. 758 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2020-10-15 04:45:20,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402133790] [2020-10-15 04:45:20,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:20,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:45:20,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679205708] [2020-10-15 04:45:20,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:45:20,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:20,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:45:20,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:45:20,646 INFO L87 Difference]: Start difference. First operand 22625 states and 35920 transitions. Second operand 11 states. [2020-10-15 04:45:24,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:24,083 INFO L93 Difference]: Finished difference Result 56539 states and 88470 transitions. [2020-10-15 04:45:24,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:45:24,084 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 412 [2020-10-15 04:45:24,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:24,133 INFO L225 Difference]: With dead ends: 56539 [2020-10-15 04:45:24,133 INFO L226 Difference]: Without dead ends: 41457 [2020-10-15 04:45:24,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-15 04:45:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41457 states. [2020-10-15 04:45:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41457 to 31859. [2020-10-15 04:45:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31859 states. [2020-10-15 04:45:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31859 states to 31859 states and 50570 transitions. [2020-10-15 04:45:24,838 INFO L78 Accepts]: Start accepts. Automaton has 31859 states and 50570 transitions. Word has length 412 [2020-10-15 04:45:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:24,839 INFO L479 AbstractCegarLoop]: Abstraction has 31859 states and 50570 transitions. [2020-10-15 04:45:24,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:45:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 31859 states and 50570 transitions. [2020-10-15 04:45:24,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-15 04:45:24,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:24,883 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2020-10-15 04:45:24,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:45:24,884 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:24,884 INFO L82 PathProgramCache]: Analyzing trace with hash -971193869, now seen corresponding path program 1 times [2020-10-15 04:45:24,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:24,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690823252] [2020-10-15 04:45:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:24,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:29,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-15 04:45:29,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:45:29,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-15 04:45:29,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:29,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:45:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-15 04:45:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-15 04:45:29,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:30,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:30,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:30,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:30,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:30,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:30,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 1066 proven. 103 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-15 04:45:30,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690823252] [2020-10-15 04:45:30,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:30,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:45:30,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098520585] [2020-10-15 04:45:30,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:45:30,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:30,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:45:30,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:45:30,865 INFO L87 Difference]: Start difference. First operand 31859 states and 50570 transitions. Second operand 11 states. [2020-10-15 04:45:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:36,521 INFO L93 Difference]: Finished difference Result 96129 states and 151501 transitions. [2020-10-15 04:45:36,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 04:45:36,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 413 [2020-10-15 04:45:36,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:36,620 INFO L225 Difference]: With dead ends: 96129 [2020-10-15 04:45:36,620 INFO L226 Difference]: Without dead ends: 81229 [2020-10-15 04:45:36,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:45:36,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81229 states. [2020-10-15 04:45:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81229 to 51489. [2020-10-15 04:45:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51489 states. [2020-10-15 04:45:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51489 states to 51489 states and 82644 transitions. [2020-10-15 04:45:37,960 INFO L78 Accepts]: Start accepts. Automaton has 51489 states and 82644 transitions. Word has length 413 [2020-10-15 04:45:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:37,961 INFO L479 AbstractCegarLoop]: Abstraction has 51489 states and 82644 transitions. [2020-10-15 04:45:37,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:45:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 51489 states and 82644 transitions. [2020-10-15 04:45:38,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-15 04:45:38,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:38,005 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2020-10-15 04:45:38,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:45:38,006 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:38,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1400852175, now seen corresponding path program 1 times [2020-10-15 04:45:38,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:38,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777595364] [2020-10-15 04:45:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:38,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:43,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:43,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-15 04:45:43,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:45:43,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:45:43,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:43,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:45:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:45:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:45:43,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:43,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:43,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:43,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:43,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:43,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:43,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2020-10-15 04:45:43,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777595364] [2020-10-15 04:45:43,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:43,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:45:43,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439002225] [2020-10-15 04:45:43,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:43,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:43,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:43,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:43,227 INFO L87 Difference]: Start difference. First operand 51489 states and 82644 transitions. Second operand 5 states. [2020-10-15 04:45:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:45,057 INFO L93 Difference]: Finished difference Result 67717 states and 108314 transitions. [2020-10-15 04:45:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:45,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 413 [2020-10-15 04:45:45,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:45,120 INFO L225 Difference]: With dead ends: 67717 [2020-10-15 04:45:45,120 INFO L226 Difference]: Without dead ends: 53493 [2020-10-15 04:45:45,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:45:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53493 states. [2020-10-15 04:45:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53493 to 51489. [2020-10-15 04:45:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51489 states. [2020-10-15 04:45:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51489 states to 51489 states and 82618 transitions. [2020-10-15 04:45:46,449 INFO L78 Accepts]: Start accepts. Automaton has 51489 states and 82618 transitions. Word has length 413 [2020-10-15 04:45:46,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:46,450 INFO L479 AbstractCegarLoop]: Abstraction has 51489 states and 82618 transitions. [2020-10-15 04:45:46,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:45:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 51489 states and 82618 transitions. [2020-10-15 04:45:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-15 04:45:46,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:46,494 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2020-10-15 04:45:46,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:45:46,494 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:46,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash 914036566, now seen corresponding path program 1 times [2020-10-15 04:45:46,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:46,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715439870] [2020-10-15 04:45:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:46,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:51,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:51,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-15 04:45:51,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:45:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-15 04:45:51,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:51,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:45:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:45:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-15 04:45:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:51,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:51,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:51,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:45:51,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:51,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:51,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:51,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 750 proven. 112 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2020-10-15 04:45:51,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715439870] [2020-10-15 04:45:51,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:51,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:45:51,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834852995] [2020-10-15 04:45:51,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:45:51,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:51,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:45:51,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:45:51,988 INFO L87 Difference]: Start difference. First operand 51489 states and 82618 transitions. Second operand 9 states. [2020-10-15 04:45:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:56,084 INFO L93 Difference]: Finished difference Result 91507 states and 145483 transitions. [2020-10-15 04:45:56,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:45:56,084 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 413 [2020-10-15 04:45:56,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:56,173 INFO L225 Difference]: With dead ends: 91507 [2020-10-15 04:45:56,173 INFO L226 Difference]: Without dead ends: 77283 [2020-10-15 04:45:56,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:45:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77283 states. [2020-10-15 04:45:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77283 to 59486. [2020-10-15 04:45:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59486 states. [2020-10-15 04:45:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59486 states to 59486 states and 95470 transitions. [2020-10-15 04:45:57,594 INFO L78 Accepts]: Start accepts. Automaton has 59486 states and 95470 transitions. Word has length 413 [2020-10-15 04:45:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:57,594 INFO L479 AbstractCegarLoop]: Abstraction has 59486 states and 95470 transitions. [2020-10-15 04:45:57,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:45:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 59486 states and 95470 transitions. [2020-10-15 04:45:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-15 04:45:57,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:57,654 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 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] [2020-10-15 04:45:57,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:45:57,654 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:57,654 INFO L82 PathProgramCache]: Analyzing trace with hash 223099903, now seen corresponding path program 1 times [2020-10-15 04:45:57,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:57,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862581590] [2020-10-15 04:45:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:57,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:02,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-15 04:46:02,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:46:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-15 04:46:02,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:02,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:46:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-15 04:46:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:46:02,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:02,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:02,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:02,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:02,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:02,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:46:02,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:02,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:02,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 738 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2020-10-15 04:46:03,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862581590] [2020-10-15 04:46:03,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:03,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:46:03,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213527756] [2020-10-15 04:46:03,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:46:03,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:03,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:46:03,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:03,089 INFO L87 Difference]: Start difference. First operand 59486 states and 95470 transitions. Second operand 5 states. [2020-10-15 04:46:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:05,998 INFO L93 Difference]: Finished difference Result 136302 states and 216869 transitions. [2020-10-15 04:46:05,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:05,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 413 [2020-10-15 04:46:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:06,108 INFO L225 Difference]: With dead ends: 136302 [2020-10-15 04:46:06,108 INFO L226 Difference]: Without dead ends: 92356 [2020-10-15 04:46:06,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:46:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92356 states. [2020-10-15 04:46:08,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92356 to 73480. [2020-10-15 04:46:08,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73480 states. [2020-10-15 04:46:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73480 states to 73480 states and 121296 transitions. [2020-10-15 04:46:08,163 INFO L78 Accepts]: Start accepts. Automaton has 73480 states and 121296 transitions. Word has length 413 [2020-10-15 04:46:08,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:08,164 INFO L479 AbstractCegarLoop]: Abstraction has 73480 states and 121296 transitions. [2020-10-15 04:46:08,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:46:08,164 INFO L276 IsEmpty]: Start isEmpty. Operand 73480 states and 121296 transitions. [2020-10-15 04:46:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-15 04:46:08,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:08,233 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 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] [2020-10-15 04:46:08,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:46:08,233 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash -206558403, now seen corresponding path program 1 times [2020-10-15 04:46:08,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:08,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307615790] [2020-10-15 04:46:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:08,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:08,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:09,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:13,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-15 04:46:13,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:46:13,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:46:13,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:13,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:46:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-15 04:46:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:46:13,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:13,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:13,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:13,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:13,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:46:13,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:13,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:13,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:13,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:13,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:13,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2020-10-15 04:46:13,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307615790] [2020-10-15 04:46:13,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:13,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:46:13,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400961448] [2020-10-15 04:46:13,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:46:13,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:13,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:46:13,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:13,463 INFO L87 Difference]: Start difference. First operand 73480 states and 121296 transitions. Second operand 5 states. [2020-10-15 04:46:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:16,038 INFO L93 Difference]: Finished difference Result 104092 states and 170932 transitions. [2020-10-15 04:46:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:16,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 413 [2020-10-15 04:46:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:16,117 INFO L225 Difference]: With dead ends: 104092 [2020-10-15 04:46:16,117 INFO L226 Difference]: Without dead ends: 76978 [2020-10-15 04:46:16,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:46:16,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76978 states. [2020-10-15 04:46:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76978 to 73638. [2020-10-15 04:46:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73638 states. [2020-10-15 04:46:17,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73638 states to 73638 states and 121542 transitions. [2020-10-15 04:46:17,688 INFO L78 Accepts]: Start accepts. Automaton has 73638 states and 121542 transitions. Word has length 413 [2020-10-15 04:46:17,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:17,689 INFO L479 AbstractCegarLoop]: Abstraction has 73638 states and 121542 transitions. [2020-10-15 04:46:17,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:46:17,689 INFO L276 IsEmpty]: Start isEmpty. Operand 73638 states and 121542 transitions. [2020-10-15 04:46:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-15 04:46:17,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:17,760 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2020-10-15 04:46:17,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:46:17,761 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:17,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1124279448, now seen corresponding path program 2 times [2020-10-15 04:46:17,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:17,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495069812] [2020-10-15 04:46:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:17,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:17,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:22,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:22,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-15 04:46:22,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:46:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:46:22,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:22,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 04:46:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:46:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-15 04:46:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:23,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:23,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:23,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:23,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:23,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:23,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:46:23,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:23,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 690 proven. 100 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2020-10-15 04:46:23,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495069812] [2020-10-15 04:46:23,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:23,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:46:23,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894223526] [2020-10-15 04:46:23,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:46:23,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:23,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:46:23,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:46:23,550 INFO L87 Difference]: Start difference. First operand 73638 states and 121542 transitions. Second operand 9 states. [2020-10-15 04:46:27,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:27,566 INFO L93 Difference]: Finished difference Result 153912 states and 253610 transitions. [2020-10-15 04:46:27,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:46:27,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 413 [2020-10-15 04:46:27,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:27,654 INFO L225 Difference]: With dead ends: 153912 [2020-10-15 04:46:27,654 INFO L226 Difference]: Without dead ends: 80293 [2020-10-15 04:46:27,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 13 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-15 04:46:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80293 states. [2020-10-15 04:46:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80293 to 74067. [2020-10-15 04:46:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74067 states. [2020-10-15 04:46:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74067 states to 74067 states and 122251 transitions. [2020-10-15 04:46:29,300 INFO L78 Accepts]: Start accepts. Automaton has 74067 states and 122251 transitions. Word has length 413 [2020-10-15 04:46:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:29,301 INFO L479 AbstractCegarLoop]: Abstraction has 74067 states and 122251 transitions. [2020-10-15 04:46:29,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:46:29,301 INFO L276 IsEmpty]: Start isEmpty. Operand 74067 states and 122251 transitions. [2020-10-15 04:46:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-15 04:46:29,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:29,374 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 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] [2020-10-15 04:46:29,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:46:29,374 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:29,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1104411078, now seen corresponding path program 1 times [2020-10-15 04:46:29,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:29,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749318635] [2020-10-15 04:46:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:29,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking...