/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.11.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:40:34,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:40:34,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:40:34,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:40:34,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:40:34,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:40:34,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:40:34,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:40:34,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:40:34,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:40:34,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:40:34,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:40:34,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:40:34,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:40:34,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:40:34,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:40:34,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:40:34,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:40:34,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:40:34,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:40:34,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:40:34,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:40:34,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:40:34,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:40:34,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:40:34,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:40:34,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:40:34,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:40:34,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:40:34,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:40:34,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:40:34,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:40:34,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:40:34,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:40:34,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:40:34,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:40:34,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:40:34,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:40:34,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:40:34,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:40:34,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:40:34,533 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 04:40:34,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:40:34,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:40:34,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:40:34,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:40:34,581 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:40:34,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:40:34,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:40:34,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:40:34,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:40:34,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:40:34,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:40:34,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:40:34,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:40:34,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:40:34,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:40:34,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:40:34,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:40:34,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:40:34,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:40:34,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:40:34,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:40:34,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:40:34,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:40:34,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:40:34,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:40:34,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:40:34,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:40:34,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:40:34,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:40:34,592 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 04:40:34,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:40:34,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:40:34,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:40:34,925 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:40:34,926 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:40:34,927 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-2.c [2020-10-15 04:40:34,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fd30c5d7/6214001f0ba54bf9b63fddc47633ff7f/FLAGe9b908721 [2020-10-15 04:40:35,588 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:40:35,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-2.c [2020-10-15 04:40:35,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fd30c5d7/6214001f0ba54bf9b63fddc47633ff7f/FLAGe9b908721 [2020-10-15 04:40:35,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fd30c5d7/6214001f0ba54bf9b63fddc47633ff7f [2020-10-15 04:40:35,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:40:35,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:40:35,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:40:35,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:40:35,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:40:35,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:40:35" (1/1) ... [2020-10-15 04:40:35,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4e4768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:35, skipping insertion in model container [2020-10-15 04:40:35,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:40:35" (1/1) ... [2020-10-15 04:40:35,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:40:35,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:40:36,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:40:36,521 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:40:36,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:40:36,689 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:40:36,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:36 WrapperNode [2020-10-15 04:40:36,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:40:36,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:40:36,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:40:36,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:40:36,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:36" (1/1) ... [2020-10-15 04:40:36,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:36" (1/1) ... [2020-10-15 04:40:36,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:36" (1/1) ... [2020-10-15 04:40:36,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:36" (1/1) ... [2020-10-15 04:40:36,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:36" (1/1) ... [2020-10-15 04:40:36,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:36" (1/1) ... [2020-10-15 04:40:36,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:36" (1/1) ... [2020-10-15 04:40:36,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:40:36,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:40:36,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:40:36,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:40:36,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:36" (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 04:40:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:40:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:40:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-15 04:40:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-15 04:40:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:40:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:40:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-15 04:40:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 04:40:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-15 04:40:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:40:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 04:40:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:40:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:40:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:40:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-15 04:40:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 04:40:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-15 04:40:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-15 04:40:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:40:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-15 04:40:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-15 04:40:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 04:40:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:40:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 04:40:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 04:40:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 04:40:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 04:40:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 04:40:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 04:40:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:40:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 04:40:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:40:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 04:40:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-15 04:40:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-15 04:40:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-15 04:40:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 04:40:37,395 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:40:38,018 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-15 04:40:38,018 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-15 04:40:38,042 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:40:38,042 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:40:38,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:40:38 BoogieIcfgContainer [2020-10-15 04:40:38,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:40:38,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:40:38,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:40:38,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:40:38,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:40:35" (1/3) ... [2020-10-15 04:40:38,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c88181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:40:38, skipping insertion in model container [2020-10-15 04:40:38,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:36" (2/3) ... [2020-10-15 04:40:38,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c88181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:40:38, skipping insertion in model container [2020-10-15 04:40:38,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:40:38" (3/3) ... [2020-10-15 04:40:38,062 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-2.c [2020-10-15 04:40:38,073 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:40:38,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:40:38,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:40:38,129 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:40:38,130 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:40:38,130 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:40:38,130 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:40:38,130 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:40:38,130 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:40:38,131 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:40:38,131 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:40:38,163 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-15 04:40:38,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 04:40:38,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:38,179 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] [2020-10-15 04:40:38,180 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:38,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1765903298, now seen corresponding path program 1 times [2020-10-15 04:40:38,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:38,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315996718] [2020-10-15 04:40:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:38,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:39,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 04:40:39,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:40:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-10-15 04:40:39,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:39,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:40:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:40:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:40:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:40:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:39,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:39,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:39,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:40:39,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:39,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:39,908 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 04:40:39,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315996718] [2020-10-15 04:40:39,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:39,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:40:39,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325486358] [2020-10-15 04:40:39,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:40:39,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:39,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:40:39,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:39,936 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2020-10-15 04:40:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:40,674 INFO L93 Difference]: Finished difference Result 436 states and 738 transitions. [2020-10-15 04:40:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:40:40,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-15 04:40:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:40,692 INFO L225 Difference]: With dead ends: 436 [2020-10-15 04:40:40,692 INFO L226 Difference]: Without dead ends: 266 [2020-10-15 04:40:40,697 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 04:40:40,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-15 04:40:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-15 04:40:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 04:40:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 399 transitions. [2020-10-15 04:40:40,765 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 399 transitions. Word has length 41 [2020-10-15 04:40:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:40,766 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 399 transitions. [2020-10-15 04:40:40,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:40:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 399 transitions. [2020-10-15 04:40:40,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 04:40:40,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:40,771 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] [2020-10-15 04:40:40,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:40:40,772 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:40,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1238454678, now seen corresponding path program 1 times [2020-10-15 04:40:40,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:40,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939798203] [2020-10-15 04:40:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:41,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:41,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:41,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 04:40:41,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:40:41,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-10-15 04:40:41,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:41,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:40:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:40:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 04:40:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:42,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:42,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:42,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:42,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:42,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:40:42,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:42,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:42,124 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 04:40:42,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939798203] [2020-10-15 04:40:42,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:42,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:40:42,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055143811] [2020-10-15 04:40:42,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:40:42,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:42,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:40:42,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:42,129 INFO L87 Difference]: Start difference. First operand 266 states and 399 transitions. Second operand 4 states. [2020-10-15 04:40:42,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:42,655 INFO L93 Difference]: Finished difference Result 518 states and 790 transitions. [2020-10-15 04:40:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:40:42,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-15 04:40:42,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:42,660 INFO L225 Difference]: With dead ends: 518 [2020-10-15 04:40:42,661 INFO L226 Difference]: Without dead ends: 391 [2020-10-15 04:40:42,663 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 04:40:42,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-15 04:40:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-10-15 04:40:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-15 04:40:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 586 transitions. [2020-10-15 04:40:42,689 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 586 transitions. Word has length 58 [2020-10-15 04:40:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:42,689 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 586 transitions. [2020-10-15 04:40:42,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:40:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 586 transitions. [2020-10-15 04:40:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:40:42,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:42,695 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] [2020-10-15 04:40:42,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:40:42,696 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:42,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:42,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1101054784, now seen corresponding path program 1 times [2020-10-15 04:40:42,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:42,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632354128] [2020-10-15 04:40:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:42,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:43,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:43,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 04:40:43,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:40:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-15 04:40:43,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:43,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:40:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:40:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:40:43,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:43,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:43,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:43,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:43,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:40:43,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:43,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:43,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:43,386 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 04:40:43,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632354128] [2020-10-15 04:40:43,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:43,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:40:43,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444228819] [2020-10-15 04:40:43,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:40:43,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:43,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:40:43,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:43,389 INFO L87 Difference]: Start difference. First operand 391 states and 586 transitions. Second operand 4 states. [2020-10-15 04:40:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:43,923 INFO L93 Difference]: Finished difference Result 768 states and 1164 transitions. [2020-10-15 04:40:43,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:40:43,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-15 04:40:43,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:43,927 INFO L225 Difference]: With dead ends: 768 [2020-10-15 04:40:43,928 INFO L226 Difference]: Without dead ends: 516 [2020-10-15 04:40:43,930 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 04:40:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-15 04:40:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2020-10-15 04:40:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-15 04:40:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 775 transitions. [2020-10-15 04:40:43,951 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 775 transitions. Word has length 80 [2020-10-15 04:40:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:43,952 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 775 transitions. [2020-10-15 04:40:43,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:40:43,952 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 775 transitions. [2020-10-15 04:40:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 04:40:43,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:43,958 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] [2020-10-15 04:40:43,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:40:43,958 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:43,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:43,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1488005106, now seen corresponding path program 1 times [2020-10-15 04:40:43,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:43,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441271783] [2020-10-15 04:40:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:44,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:44,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:44,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:47,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:47,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 04:40:47,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:40:47,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3089 [2020-10-15 04:40:47,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:47,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:40:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 04:40:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:40:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:47,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:47,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:47,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:47,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:47,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:40:47,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:47,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:47,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:47,205 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 04:40:47,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441271783] [2020-10-15 04:40:47,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:47,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:40:47,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74209124] [2020-10-15 04:40:47,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:40:47,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:47,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:40:47,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:47,208 INFO L87 Difference]: Start difference. First operand 516 states and 775 transitions. Second operand 4 states. [2020-10-15 04:40:47,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:47,752 INFO L93 Difference]: Finished difference Result 1020 states and 1543 transitions. [2020-10-15 04:40:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:40:47,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-15 04:40:47,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:47,757 INFO L225 Difference]: With dead ends: 1020 [2020-10-15 04:40:47,757 INFO L226 Difference]: Without dead ends: 643 [2020-10-15 04:40:47,759 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 04:40:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-15 04:40:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2020-10-15 04:40:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-15 04:40:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 968 transitions. [2020-10-15 04:40:47,779 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 968 transitions. Word has length 104 [2020-10-15 04:40:47,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:47,780 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 968 transitions. [2020-10-15 04:40:47,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:40:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 968 transitions. [2020-10-15 04:40:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 04:40:47,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:47,783 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] [2020-10-15 04:40:47,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:40:47,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:47,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:47,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2121222933, now seen corresponding path program 1 times [2020-10-15 04:40:47,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:47,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480562317] [2020-10-15 04:40:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:47,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:47,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:47,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:50,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:50,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 04:40:50,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:40:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3134 [2020-10-15 04:40:50,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:50,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:40:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 04:40:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:40:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:51,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:51,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:51,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:51,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:51,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:51,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:40:51,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:51,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:51,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:40:51,077 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 04:40:51,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480562317] [2020-10-15 04:40:51,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:51,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:40:51,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734202062] [2020-10-15 04:40:51,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:40:51,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:40:51,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:51,080 INFO L87 Difference]: Start difference. First operand 641 states and 968 transitions. Second operand 4 states. [2020-10-15 04:40:51,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:51,945 INFO L93 Difference]: Finished difference Result 1270 states and 1927 transitions. [2020-10-15 04:40:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:40:51,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-15 04:40:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:51,951 INFO L225 Difference]: With dead ends: 1270 [2020-10-15 04:40:51,951 INFO L226 Difference]: Without dead ends: 768 [2020-10-15 04:40:51,953 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 04:40:51,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-15 04:40:51,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2020-10-15 04:40:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-15 04:40:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1147 transitions. [2020-10-15 04:40:51,977 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1147 transitions. Word has length 111 [2020-10-15 04:40:51,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:51,978 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1147 transitions. [2020-10-15 04:40:51,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:40:51,978 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1147 transitions. [2020-10-15 04:40:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 04:40:51,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:51,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:51,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:40:51,981 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:51,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:51,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2042459755, now seen corresponding path program 1 times [2020-10-15 04:40:51,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:51,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982245049] [2020-10-15 04:40:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:52,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:52,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:52,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-15 04:40:52,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:40:52,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-15 04:40:52,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:52,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:40:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-15 04:40:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:40:52,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:52,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:52,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:52,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:52,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:40:52,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:52,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:52,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:52,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:52,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:52,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:40:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 04:40:52,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982245049] [2020-10-15 04:40:52,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:52,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:40:52,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864102902] [2020-10-15 04:40:52,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:40:52,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:52,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:40:52,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:52,776 INFO L87 Difference]: Start difference. First operand 766 states and 1147 transitions. Second operand 4 states. [2020-10-15 04:40:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:53,372 INFO L93 Difference]: Finished difference Result 1518 states and 2284 transitions. [2020-10-15 04:40:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:40:53,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-15 04:40:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:53,378 INFO L225 Difference]: With dead ends: 1518 [2020-10-15 04:40:53,379 INFO L226 Difference]: Without dead ends: 891 [2020-10-15 04:40:53,380 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 04:40:53,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-15 04:40:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2020-10-15 04:40:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-15 04:40:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1337 transitions. [2020-10-15 04:40:53,412 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1337 transitions. Word has length 128 [2020-10-15 04:40:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:53,413 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1337 transitions. [2020-10-15 04:40:53,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:40:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1337 transitions. [2020-10-15 04:40:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 04:40:53,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:53,420 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] [2020-10-15 04:40:53,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:40:53,421 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:53,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1858251708, now seen corresponding path program 1 times [2020-10-15 04:40:53,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:53,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269702667] [2020-10-15 04:40:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:53,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:54,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:54,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-15 04:40:54,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:40:54,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-15 04:40:54,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:54,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:40:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-15 04:40:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:40:54,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:54,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:40:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:54,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:54,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:40:54,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:40:54,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:40:54,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:40:54,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:40:54,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:40:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:40:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:40:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:40:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:40:54,422 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 04:40:54,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269702667] [2020-10-15 04:40:54,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:40:54,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:40:54,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501311247] [2020-10-15 04:40:54,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:40:54,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:40:54,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:40:54,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:40:54,429 INFO L87 Difference]: Start difference. First operand 891 states and 1337 transitions. Second operand 4 states. [2020-10-15 04:40:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:40:54,954 INFO L93 Difference]: Finished difference Result 1020 states and 1527 transitions. [2020-10-15 04:40:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:40:54,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-15 04:40:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:40:54,960 INFO L225 Difference]: With dead ends: 1020 [2020-10-15 04:40:54,960 INFO L226 Difference]: Without dead ends: 1018 [2020-10-15 04:40:54,961 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 04:40:54,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-10-15 04:40:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2020-10-15 04:40:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-15 04:40:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1524 transitions. [2020-10-15 04:40:54,991 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1524 transitions. Word has length 133 [2020-10-15 04:40:54,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:40:54,992 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1524 transitions. [2020-10-15 04:40:54,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:40:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1524 transitions. [2020-10-15 04:40:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-15 04:40:54,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:40:54,996 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:40:54,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:40:54,996 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:40:54,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:40:54,997 INFO L82 PathProgramCache]: Analyzing trace with hash 64677423, now seen corresponding path program 1 times [2020-10-15 04:40:54,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:40:54,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505006387] [2020-10-15 04:40:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:40:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:40:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:40:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:00,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:00,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 04:41:00,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-15 04:41:00,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:00,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:41:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:41:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-15 04:41:00,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:00,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:00,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:00,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:00,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:00,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:41:01,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505006387] [2020-10-15 04:41:01,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:41:01,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:41:01,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584681092] [2020-10-15 04:41:01,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:41:01,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:01,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:41:01,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:41:01,050 INFO L87 Difference]: Start difference. First operand 1016 states and 1524 transitions. Second operand 11 states. [2020-10-15 04:41:04,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:04,016 INFO L93 Difference]: Finished difference Result 4534 states and 6827 transitions. [2020-10-15 04:41:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:41:04,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 171 [2020-10-15 04:41:04,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:04,034 INFO L225 Difference]: With dead ends: 4534 [2020-10-15 04:41:04,034 INFO L226 Difference]: Without dead ends: 3532 [2020-10-15 04:41:04,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:41:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2020-10-15 04:41:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 2240. [2020-10-15 04:41:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2240 states. [2020-10-15 04:41:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3494 transitions. [2020-10-15 04:41:04,177 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3494 transitions. Word has length 171 [2020-10-15 04:41:04,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:04,178 INFO L479 AbstractCegarLoop]: Abstraction has 2240 states and 3494 transitions. [2020-10-15 04:41:04,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:41:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3494 transitions. [2020-10-15 04:41:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-15 04:41:04,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:04,196 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:04,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:41:04,196 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:04,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:04,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1787817405, now seen corresponding path program 1 times [2020-10-15 04:41:04,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:04,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913128071] [2020-10-15 04:41:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:08,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:09,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:09,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-15 04:41:09,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:41:09,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:09,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:41:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:41:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-15 04:41:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:09,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:09,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:09,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:09,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:09,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:09,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:09,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 16 proven. 174 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:41:10,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913128071] [2020-10-15 04:41:10,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:41:10,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:41:10,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825197302] [2020-10-15 04:41:10,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:41:10,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:10,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:41:10,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:41:10,058 INFO L87 Difference]: Start difference. First operand 2240 states and 3494 transitions. Second operand 11 states. [2020-10-15 04:41:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:14,320 INFO L93 Difference]: Finished difference Result 8492 states and 13164 transitions. [2020-10-15 04:41:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:41:14,321 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-10-15 04:41:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:14,353 INFO L225 Difference]: With dead ends: 8492 [2020-10-15 04:41:14,353 INFO L226 Difference]: Without dead ends: 6266 [2020-10-15 04:41:14,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:41:14,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2020-10-15 04:41:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 4758. [2020-10-15 04:41:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4758 states. [2020-10-15 04:41:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 7626 transitions. [2020-10-15 04:41:14,562 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 7626 transitions. Word has length 172 [2020-10-15 04:41:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:14,562 INFO L479 AbstractCegarLoop]: Abstraction has 4758 states and 7626 transitions. [2020-10-15 04:41:14,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:41:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 7626 transitions. [2020-10-15 04:41:14,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-15 04:41:14,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:14,574 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, 1] [2020-10-15 04:41:14,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:41:14,574 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:14,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:14,575 INFO L82 PathProgramCache]: Analyzing trace with hash 2010233282, now seen corresponding path program 1 times [2020-10-15 04:41:14,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:14,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780142116] [2020-10-15 04:41:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:19,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:19,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-15 04:41:19,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:19,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4910 [2020-10-15 04:41:19,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:19,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-15 04:41:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:19,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:19,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:19,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:19,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:19,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:19,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:19,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:41:19,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:19,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:19,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:19,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-15 04:41:19,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780142116] [2020-10-15 04:41:19,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:19,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:19,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122559433] [2020-10-15 04:41:19,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:19,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:19,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:19,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:19,659 INFO L87 Difference]: Start difference. First operand 4758 states and 7626 transitions. Second operand 5 states. [2020-10-15 04:41:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:20,890 INFO L93 Difference]: Finished difference Result 12344 states and 19632 transitions. [2020-10-15 04:41:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:20,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-15 04:41:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:20,932 INFO L225 Difference]: With dead ends: 12344 [2020-10-15 04:41:20,932 INFO L226 Difference]: Without dead ends: 7600 [2020-10-15 04:41:20,946 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 04:41:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7600 states. [2020-10-15 04:41:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7600 to 5616. [2020-10-15 04:41:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5616 states. [2020-10-15 04:41:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5616 states to 5616 states and 9210 transitions. [2020-10-15 04:41:21,167 INFO L78 Accepts]: Start accepts. Automaton has 5616 states and 9210 transitions. Word has length 174 [2020-10-15 04:41:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:21,168 INFO L479 AbstractCegarLoop]: Abstraction has 5616 states and 9210 transitions. [2020-10-15 04:41:21,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5616 states and 9210 transitions. [2020-10-15 04:41:21,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-15 04:41:21,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:21,180 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, 1, 1] [2020-10-15 04:41:21,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:41:21,181 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:21,181 INFO L82 PathProgramCache]: Analyzing trace with hash -977614860, now seen corresponding path program 1 times [2020-10-15 04:41:21,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:21,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029982279] [2020-10-15 04:41:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:25,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:25,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-15 04:41:25,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4378 [2020-10-15 04:41:25,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:25,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-15 04:41:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:41:25,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:25,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:25,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:25,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:25,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:25,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:25,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:25,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:25,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:25,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-15 04:41:25,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029982279] [2020-10-15 04:41:25,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:25,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:25,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491010708] [2020-10-15 04:41:25,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:25,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:25,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:25,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:25,721 INFO L87 Difference]: Start difference. First operand 5616 states and 9210 transitions. Second operand 5 states. [2020-10-15 04:41:26,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:26,918 INFO L93 Difference]: Finished difference Result 13020 states and 20961 transitions. [2020-10-15 04:41:26,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:26,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-15 04:41:26,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:26,964 INFO L225 Difference]: With dead ends: 13020 [2020-10-15 04:41:26,964 INFO L226 Difference]: Without dead ends: 7418 [2020-10-15 04:41:26,980 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 04:41:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7418 states. [2020-10-15 04:41:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7418 to 5958. [2020-10-15 04:41:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5958 states. [2020-10-15 04:41:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5958 states to 5958 states and 9816 transitions. [2020-10-15 04:41:27,167 INFO L78 Accepts]: Start accepts. Automaton has 5958 states and 9816 transitions. Word has length 175 [2020-10-15 04:41:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:27,168 INFO L479 AbstractCegarLoop]: Abstraction has 5958 states and 9816 transitions. [2020-10-15 04:41:27,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5958 states and 9816 transitions. [2020-10-15 04:41:27,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:41:27,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:27,180 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:27,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:41:27,181 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:27,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1947038476, now seen corresponding path program 1 times [2020-10-15 04:41:27,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:27,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809363288] [2020-10-15 04:41:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:27,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:27,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:27,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:32,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:41:32,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:32,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 04:41:32,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:32,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:41:32,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 04:41:32,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:32,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:32,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:32,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:32,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:32,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:32,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:32,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:32,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:32,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-15 04:41:32,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809363288] [2020-10-15 04:41:32,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:32,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:32,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889738712] [2020-10-15 04:41:32,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:32,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:32,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:32,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:32,310 INFO L87 Difference]: Start difference. First operand 5958 states and 9816 transitions. Second operand 5 states. [2020-10-15 04:41:33,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:33,451 INFO L93 Difference]: Finished difference Result 8362 states and 13630 transitions. [2020-10-15 04:41:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:33,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:41:33,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:33,469 INFO L225 Difference]: With dead ends: 8362 [2020-10-15 04:41:33,470 INFO L226 Difference]: Without dead ends: 6784 [2020-10-15 04:41:33,476 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 04:41:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6784 states. [2020-10-15 04:41:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6784 to 6110. [2020-10-15 04:41:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6110 states. [2020-10-15 04:41:33,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 10072 transitions. [2020-10-15 04:41:33,721 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 10072 transitions. Word has length 185 [2020-10-15 04:41:33,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:33,722 INFO L479 AbstractCegarLoop]: Abstraction has 6110 states and 10072 transitions. [2020-10-15 04:41:33,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:33,722 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 10072 transitions. [2020-10-15 04:41:33,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:41:33,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:33,735 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:33,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:41:33,736 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:33,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:33,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1594084530, now seen corresponding path program 2 times [2020-10-15 04:41:33,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:33,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568883056] [2020-10-15 04:41:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:33,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:33,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:33,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:38,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:38,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:41:38,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 04:41:38,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:38,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:41:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:41:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:38,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:38,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:38,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:38,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:38,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:38,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:41:38,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:38,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:38,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:38,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:38,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:38,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:41:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-15 04:41:38,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568883056] [2020-10-15 04:41:38,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:38,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:38,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980883321] [2020-10-15 04:41:38,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:38,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:38,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:38,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:38,937 INFO L87 Difference]: Start difference. First operand 6110 states and 10072 transitions. Second operand 5 states. [2020-10-15 04:41:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:39,890 INFO L93 Difference]: Finished difference Result 18201 states and 29977 transitions. [2020-10-15 04:41:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:39,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 04:41:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:39,925 INFO L225 Difference]: With dead ends: 18201 [2020-10-15 04:41:39,925 INFO L226 Difference]: Without dead ends: 12105 [2020-10-15 04:41:39,939 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 04:41:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12105 states. [2020-10-15 04:41:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12105 to 12103. [2020-10-15 04:41:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12103 states. [2020-10-15 04:41:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12103 states to 12103 states and 19807 transitions. [2020-10-15 04:41:40,297 INFO L78 Accepts]: Start accepts. Automaton has 12103 states and 19807 transitions. Word has length 185 [2020-10-15 04:41:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:40,297 INFO L479 AbstractCegarLoop]: Abstraction has 12103 states and 19807 transitions. [2020-10-15 04:41:40,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 12103 states and 19807 transitions. [2020-10-15 04:41:40,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:41:40,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:40,322 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:41:40,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:41:40,322 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:40,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:40,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1777715340, now seen corresponding path program 1 times [2020-10-15 04:41:40,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:40,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891655353] [2020-10-15 04:41:40,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:40,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:40,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:45,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:45,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:41:45,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:45,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:41:45,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:45,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:41:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-15 04:41:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:41:45,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:45,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:45,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:45,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:45,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:45,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:45,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-15 04:41:45,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891655353] [2020-10-15 04:41:45,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:45,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:41:45,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008804485] [2020-10-15 04:41:45,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:41:45,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:45,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:41:45,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:41:45,438 INFO L87 Difference]: Start difference. First operand 12103 states and 19807 transitions. Second operand 4 states. [2020-10-15 04:41:46,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:46,539 INFO L93 Difference]: Finished difference Result 21580 states and 35395 transitions. [2020-10-15 04:41:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:41:46,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2020-10-15 04:41:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:46,572 INFO L225 Difference]: With dead ends: 21580 [2020-10-15 04:41:46,572 INFO L226 Difference]: Without dead ends: 13306 [2020-10-15 04:41:46,591 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 04:41:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13306 states. [2020-10-15 04:41:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13306 to 13306. [2020-10-15 04:41:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13306 states. [2020-10-15 04:41:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13306 states to 13306 states and 21775 transitions. [2020-10-15 04:41:46,988 INFO L78 Accepts]: Start accepts. Automaton has 13306 states and 21775 transitions. Word has length 185 [2020-10-15 04:41:46,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:46,988 INFO L479 AbstractCegarLoop]: Abstraction has 13306 states and 21775 transitions. [2020-10-15 04:41:46,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:41:46,988 INFO L276 IsEmpty]: Start isEmpty. Operand 13306 states and 21775 transitions. [2020-10-15 04:41:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-15 04:41:47,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:47,008 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, 1] [2020-10-15 04:41:47,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:41:47,009 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:47,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:47,009 INFO L82 PathProgramCache]: Analyzing trace with hash 432803719, now seen corresponding path program 1 times [2020-10-15 04:41:47,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:47,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286190102] [2020-10-15 04:41:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:47,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:47,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:47,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:52,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-15 04:41:52,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:41:52,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 04:41:52,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:52,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:52,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:52,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:41:52,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:52,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:52,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:52,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:52,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:52,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:52,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:52,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:52,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:52,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-15 04:41:52,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286190102] [2020-10-15 04:41:52,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:52,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:52,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564175701] [2020-10-15 04:41:52,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:52,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:52,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:52,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:52,175 INFO L87 Difference]: Start difference. First operand 13306 states and 21775 transitions. Second operand 5 states. [2020-10-15 04:41:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:41:53,454 INFO L93 Difference]: Finished difference Result 18656 states and 30177 transitions. [2020-10-15 04:41:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:41:53,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-15 04:41:53,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:41:53,490 INFO L225 Difference]: With dead ends: 18656 [2020-10-15 04:41:53,491 INFO L226 Difference]: Without dead ends: 14812 [2020-10-15 04:41:53,503 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 04:41:53,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14812 states. [2020-10-15 04:41:53,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14812 to 13666. [2020-10-15 04:41:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13666 states. [2020-10-15 04:41:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13666 states to 13666 states and 22477 transitions. [2020-10-15 04:41:53,900 INFO L78 Accepts]: Start accepts. Automaton has 13666 states and 22477 transitions. Word has length 188 [2020-10-15 04:41:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:41:53,901 INFO L479 AbstractCegarLoop]: Abstraction has 13666 states and 22477 transitions. [2020-10-15 04:41:53,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:41:53,901 INFO L276 IsEmpty]: Start isEmpty. Operand 13666 states and 22477 transitions. [2020-10-15 04:41:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-15 04:41:53,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:41:53,926 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2020-10-15 04:41:53,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:41:53,926 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:41:53,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:41:53,926 INFO L82 PathProgramCache]: Analyzing trace with hash -555048261, now seen corresponding path program 1 times [2020-10-15 04:41:53,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:41:53,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779407641] [2020-10-15 04:41:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:41:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:54,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:58,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:58,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-15 04:41:58,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:41:58,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 04:41:58,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:58,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:41:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:41:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:41:58,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:41:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:41:59,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:41:59,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:41:59,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:41:59,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:41:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:41:59,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:41:59,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:41:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:41:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:41:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:41:59,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:41:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-15 04:41:59,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779407641] [2020-10-15 04:41:59,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:41:59,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:41:59,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166881766] [2020-10-15 04:41:59,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:41:59,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:41:59,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:41:59,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:41:59,087 INFO L87 Difference]: Start difference. First operand 13666 states and 22477 transitions. Second operand 5 states. [2020-10-15 04:42:00,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:00,387 INFO L93 Difference]: Finished difference Result 33570 states and 54517 transitions. [2020-10-15 04:42:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:00,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-15 04:42:00,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:00,418 INFO L225 Difference]: With dead ends: 33570 [2020-10-15 04:42:00,419 INFO L226 Difference]: Without dead ends: 19923 [2020-10-15 04:42:00,448 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 04:42:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19923 states. [2020-10-15 04:42:00,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19923 to 15214. [2020-10-15 04:42:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15214 states. [2020-10-15 04:42:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15214 states to 15214 states and 25219 transitions. [2020-10-15 04:42:00,846 INFO L78 Accepts]: Start accepts. Automaton has 15214 states and 25219 transitions. Word has length 188 [2020-10-15 04:42:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:00,847 INFO L479 AbstractCegarLoop]: Abstraction has 15214 states and 25219 transitions. [2020-10-15 04:42:00,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 15214 states and 25219 transitions. [2020-10-15 04:42:00,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-15 04:42:00,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:00,865 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, 1, 1] [2020-10-15 04:42:00,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:42:00,865 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:00,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1661676239, now seen corresponding path program 1 times [2020-10-15 04:42:00,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:00,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774241610] [2020-10-15 04:42:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:00,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:05,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:05,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-15 04:42:05,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:42:05,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:05,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:42:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:05,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:05,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:05,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:05,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:05,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:05,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-15 04:42:06,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774241610] [2020-10-15 04:42:06,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:06,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:06,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094104110] [2020-10-15 04:42:06,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:06,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:06,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:06,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:06,020 INFO L87 Difference]: Start difference. First operand 15214 states and 25219 transitions. Second operand 5 states. [2020-10-15 04:42:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:07,194 INFO L93 Difference]: Finished difference Result 21171 states and 34763 transitions. [2020-10-15 04:42:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:07,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-15 04:42:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:07,214 INFO L225 Difference]: With dead ends: 21171 [2020-10-15 04:42:07,214 INFO L226 Difference]: Without dead ends: 16618 [2020-10-15 04:42:07,224 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 04:42:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16618 states. [2020-10-15 04:42:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16618 to 15214. [2020-10-15 04:42:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15214 states. [2020-10-15 04:42:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15214 states to 15214 states and 25219 transitions. [2020-10-15 04:42:07,543 INFO L78 Accepts]: Start accepts. Automaton has 15214 states and 25219 transitions. Word has length 189 [2020-10-15 04:42:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:07,543 INFO L479 AbstractCegarLoop]: Abstraction has 15214 states and 25219 transitions. [2020-10-15 04:42:07,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:07,543 INFO L276 IsEmpty]: Start isEmpty. Operand 15214 states and 25219 transitions. [2020-10-15 04:42:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-15 04:42:07,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:07,555 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, 1, 1] [2020-10-15 04:42:07,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:42:07,556 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:07,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1922150232, now seen corresponding path program 1 times [2020-10-15 04:42:07,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:07,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727197012] [2020-10-15 04:42:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:07,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:07,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:10,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:12,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:12,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-15 04:42:12,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:12,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:42:12,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:12,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 04:42:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:42:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-15 04:42:12,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:12,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:12,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:12,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:12,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:12,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:12,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:12,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:12,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 103 proven. 80 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-15 04:42:12,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727197012] [2020-10-15 04:42:12,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:12,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 04:42:12,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100583610] [2020-10-15 04:42:12,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:42:12,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:12,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:42:12,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:42:12,906 INFO L87 Difference]: Start difference. First operand 15214 states and 25219 transitions. Second operand 9 states. [2020-10-15 04:42:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:14,818 INFO L93 Difference]: Finished difference Result 31027 states and 51278 transitions. [2020-10-15 04:42:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:42:14,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 189 [2020-10-15 04:42:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:14,837 INFO L225 Difference]: With dead ends: 31027 [2020-10-15 04:42:14,837 INFO L226 Difference]: Without dead ends: 15832 [2020-10-15 04:42:14,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:42:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15832 states. [2020-10-15 04:42:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15832 to 15590. [2020-10-15 04:42:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15590 states. [2020-10-15 04:42:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15590 states to 15590 states and 25785 transitions. [2020-10-15 04:42:15,168 INFO L78 Accepts]: Start accepts. Automaton has 15590 states and 25785 transitions. Word has length 189 [2020-10-15 04:42:15,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:15,168 INFO L479 AbstractCegarLoop]: Abstraction has 15590 states and 25785 transitions. [2020-10-15 04:42:15,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:42:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 15590 states and 25785 transitions. [2020-10-15 04:42:15,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-15 04:42:15,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:15,179 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2020-10-15 04:42:15,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:42:15,179 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:15,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:15,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1103035931, now seen corresponding path program 1 times [2020-10-15 04:42:15,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:15,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622793498] [2020-10-15 04:42:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:15,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:20,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:20,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-15 04:42:20,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:20,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 04:42:20,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:20,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 04:42:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:20,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:20,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:20,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:20,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:20,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:20,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:20,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:20,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:20,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:20,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-15 04:42:20,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622793498] [2020-10-15 04:42:20,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:20,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:20,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840700061] [2020-10-15 04:42:20,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:20,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:20,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:20,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:20,317 INFO L87 Difference]: Start difference. First operand 15590 states and 25785 transitions. Second operand 5 states. [2020-10-15 04:42:21,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:21,633 INFO L93 Difference]: Finished difference Result 35246 states and 57286 transitions. [2020-10-15 04:42:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:21,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-15 04:42:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:21,657 INFO L225 Difference]: With dead ends: 35246 [2020-10-15 04:42:21,657 INFO L226 Difference]: Without dead ends: 19697 [2020-10-15 04:42:21,673 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 04:42:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19697 states. [2020-10-15 04:42:21,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19697 to 13742. [2020-10-15 04:42:21,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13742 states. [2020-10-15 04:42:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13742 states to 13742 states and 22401 transitions. [2020-10-15 04:42:21,963 INFO L78 Accepts]: Start accepts. Automaton has 13742 states and 22401 transitions. Word has length 189 [2020-10-15 04:42:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:21,963 INFO L479 AbstractCegarLoop]: Abstraction has 13742 states and 22401 transitions. [2020-10-15 04:42:21,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 13742 states and 22401 transitions. [2020-10-15 04:42:21,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-15 04:42:21,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:21,974 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 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] [2020-10-15 04:42:21,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:42:21,975 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:21,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:21,975 INFO L82 PathProgramCache]: Analyzing trace with hash -747093232, now seen corresponding path program 1 times [2020-10-15 04:42:21,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:21,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74098047] [2020-10-15 04:42:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:25,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:27,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:27,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-15 04:42:27,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:27,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:42:27,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:27,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:27,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:27,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-15 04:42:27,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:42:27,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:27,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:27,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:27,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:27,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:27,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:27,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:27,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-15 04:42:27,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74098047] [2020-10-15 04:42:27,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:27,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:27,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975257761] [2020-10-15 04:42:27,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:27,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:27,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:27,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:27,093 INFO L87 Difference]: Start difference. First operand 13742 states and 22401 transitions. Second operand 5 states. [2020-10-15 04:42:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:28,546 INFO L93 Difference]: Finished difference Result 33772 states and 54429 transitions. [2020-10-15 04:42:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:28,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-15 04:42:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:28,569 INFO L225 Difference]: With dead ends: 33772 [2020-10-15 04:42:28,570 INFO L226 Difference]: Without dead ends: 20071 [2020-10-15 04:42:28,581 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 04:42:28,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20071 states. [2020-10-15 04:42:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20071 to 15590. [2020-10-15 04:42:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15590 states. [2020-10-15 04:42:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15590 states to 15590 states and 25785 transitions. [2020-10-15 04:42:28,869 INFO L78 Accepts]: Start accepts. Automaton has 15590 states and 25785 transitions. Word has length 191 [2020-10-15 04:42:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:28,870 INFO L479 AbstractCegarLoop]: Abstraction has 15590 states and 25785 transitions. [2020-10-15 04:42:28,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 15590 states and 25785 transitions. [2020-10-15 04:42:28,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-15 04:42:28,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:28,886 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 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] [2020-10-15 04:42:28,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:42:28,886 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:28,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:28,887 INFO L82 PathProgramCache]: Analyzing trace with hash -555390874, now seen corresponding path program 1 times [2020-10-15 04:42:28,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:28,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668299042] [2020-10-15 04:42:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:29,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:33,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:33,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-15 04:42:33,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 04:42:33,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:33,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-15 04:42:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:33,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:33,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:33,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:33,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:33,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:33,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:33,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:33,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:33,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:33,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:33,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-15 04:42:34,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668299042] [2020-10-15 04:42:34,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:34,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:34,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247440172] [2020-10-15 04:42:34,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:34,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:34,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:34,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:34,007 INFO L87 Difference]: Start difference. First operand 15590 states and 25785 transitions. Second operand 5 states. [2020-10-15 04:42:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:35,353 INFO L93 Difference]: Finished difference Result 35246 states and 57286 transitions. [2020-10-15 04:42:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:35,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-15 04:42:35,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:35,376 INFO L225 Difference]: With dead ends: 35246 [2020-10-15 04:42:35,377 INFO L226 Difference]: Without dead ends: 19697 [2020-10-15 04:42:35,394 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 04:42:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19697 states. [2020-10-15 04:42:35,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19697 to 13742. [2020-10-15 04:42:35,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13742 states. [2020-10-15 04:42:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13742 states to 13742 states and 22401 transitions. [2020-10-15 04:42:35,691 INFO L78 Accepts]: Start accepts. Automaton has 13742 states and 22401 transitions. Word has length 192 [2020-10-15 04:42:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:35,691 INFO L479 AbstractCegarLoop]: Abstraction has 13742 states and 22401 transitions. [2020-10-15 04:42:35,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 13742 states and 22401 transitions. [2020-10-15 04:42:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-15 04:42:35,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:35,705 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:35,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:42:35,705 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:35,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:35,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1070260714, now seen corresponding path program 1 times [2020-10-15 04:42:35,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:35,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005220166] [2020-10-15 04:42:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:35,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:40,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:40,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-15 04:42:40,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:42:40,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-15 04:42:40,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:40,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:42:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-15 04:42:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:42:40,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:40,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:40,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:40,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:40,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:40,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:40,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:40,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:40,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-15 04:42:40,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005220166] [2020-10-15 04:42:40,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:40,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:40,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252609970] [2020-10-15 04:42:40,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:40,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:40,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:40,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:40,917 INFO L87 Difference]: Start difference. First operand 13742 states and 22401 transitions. Second operand 5 states. [2020-10-15 04:42:42,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:42,387 INFO L93 Difference]: Finished difference Result 33838 states and 54495 transitions. [2020-10-15 04:42:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:42,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-15 04:42:42,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:42,412 INFO L225 Difference]: With dead ends: 33838 [2020-10-15 04:42:42,412 INFO L226 Difference]: Without dead ends: 20137 [2020-10-15 04:42:42,429 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 04:42:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20137 states. [2020-10-15 04:42:42,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20137 to 15656. [2020-10-15 04:42:42,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15656 states. [2020-10-15 04:42:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15656 states to 15656 states and 25851 transitions. [2020-10-15 04:42:42,763 INFO L78 Accepts]: Start accepts. Automaton has 15656 states and 25851 transitions. Word has length 196 [2020-10-15 04:42:42,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:42,763 INFO L479 AbstractCegarLoop]: Abstraction has 15656 states and 25851 transitions. [2020-10-15 04:42:42,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand 15656 states and 25851 transitions. [2020-10-15 04:42:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-15 04:42:42,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:42,775 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:42,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:42:42,775 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:42,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:42,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1957483560, now seen corresponding path program 1 times [2020-10-15 04:42:42,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:42,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071919400] [2020-10-15 04:42:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:42,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:42,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:43,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:47,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:47,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-15 04:42:47,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:42:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:42:47,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:47,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:42:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 04:42:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 04:42:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:47,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:47,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:47,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:47,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:47,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:47,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:42:47,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:47,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:47,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:47,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:48,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 258 proven. 37 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-15 04:42:48,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071919400] [2020-10-15 04:42:48,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:42:48,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 04:42:48,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769806223] [2020-10-15 04:42:48,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:42:48,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:48,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:42:48,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:42:48,062 INFO L87 Difference]: Start difference. First operand 15656 states and 25851 transitions. Second operand 7 states. [2020-10-15 04:42:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:50,023 INFO L93 Difference]: Finished difference Result 45917 states and 75957 transitions. [2020-10-15 04:42:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:42:50,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-10-15 04:42:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:50,061 INFO L225 Difference]: With dead ends: 45917 [2020-10-15 04:42:50,061 INFO L226 Difference]: Without dead ends: 30302 [2020-10-15 04:42:50,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:42:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30302 states. [2020-10-15 04:42:50,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30302 to 29854. [2020-10-15 04:42:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29854 states. [2020-10-15 04:42:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29854 states to 29854 states and 49581 transitions. [2020-10-15 04:42:50,691 INFO L78 Accepts]: Start accepts. Automaton has 29854 states and 49581 transitions. Word has length 196 [2020-10-15 04:42:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:50,692 INFO L479 AbstractCegarLoop]: Abstraction has 29854 states and 49581 transitions. [2020-10-15 04:42:50,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:42:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 29854 states and 49581 transitions. [2020-10-15 04:42:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-15 04:42:50,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:50,716 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 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] [2020-10-15 04:42:50,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:42:50,716 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:50,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1436727266, now seen corresponding path program 1 times [2020-10-15 04:42:50,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:50,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857874027] [2020-10-15 04:42:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:50,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:51,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:54,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:55,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-15 04:42:55,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:42:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:42:55,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:55,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:42:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-15 04:42:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:42:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:42:55,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:42:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:55,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:55,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:42:55,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:42:55,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:42:55,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:42:55,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:42:55,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:42:55,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:42:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:42:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:42:55,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:42:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-15 04:42:55,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857874027] [2020-10-15 04:42:55,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:42:55,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:42:55,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446864312] [2020-10-15 04:42:55,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:42:55,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:42:55,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:42:55,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:42:55,872 INFO L87 Difference]: Start difference. First operand 29854 states and 49581 transitions. Second operand 5 states. [2020-10-15 04:42:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:42:57,815 INFO L93 Difference]: Finished difference Result 71945 states and 117958 transitions. [2020-10-15 04:42:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:42:57,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-15 04:42:57,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:42:57,874 INFO L225 Difference]: With dead ends: 71945 [2020-10-15 04:42:57,874 INFO L226 Difference]: Without dead ends: 42132 [2020-10-15 04:42:57,905 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 04:42:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42132 states. [2020-10-15 04:42:58,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42132 to 30008. [2020-10-15 04:42:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30008 states. [2020-10-15 04:42:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30008 states to 30008 states and 49863 transitions. [2020-10-15 04:42:58,650 INFO L78 Accepts]: Start accepts. Automaton has 30008 states and 49863 transitions. Word has length 196 [2020-10-15 04:42:58,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:42:58,651 INFO L479 AbstractCegarLoop]: Abstraction has 30008 states and 49863 transitions. [2020-10-15 04:42:58,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:42:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 30008 states and 49863 transitions. [2020-10-15 04:42:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-15 04:42:58,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:42:58,673 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:42:58,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:42:58,673 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:42:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:42:58,673 INFO L82 PathProgramCache]: Analyzing trace with hash 650341162, now seen corresponding path program 1 times [2020-10-15 04:42:58,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:42:58,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952848320] [2020-10-15 04:42:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:42:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:42:58,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:58,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:42:59,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:03,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:03,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-15 04:43:03,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:43:03,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 04:43:03,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:03,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:03,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 04:43:03,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 04:43:03,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 04:43:03,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:03,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:03,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:03,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:03,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:03,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:03,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:03,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 258 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-15 04:43:03,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952848320] [2020-10-15 04:43:03,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:03,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:43:03,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482329994] [2020-10-15 04:43:03,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:43:03,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:03,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:43:03,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:43:03,945 INFO L87 Difference]: Start difference. First operand 30008 states and 49863 transitions. Second operand 8 states. [2020-10-15 04:43:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:07,332 INFO L93 Difference]: Finished difference Result 89505 states and 148794 transitions. [2020-10-15 04:43:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:43:07,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-10-15 04:43:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:07,413 INFO L225 Difference]: With dead ends: 89505 [2020-10-15 04:43:07,413 INFO L226 Difference]: Without dead ends: 59538 [2020-10-15 04:43:07,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:43:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59538 states. [2020-10-15 04:43:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59538 to 44426. [2020-10-15 04:43:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44426 states. [2020-10-15 04:43:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44426 states to 44426 states and 74007 transitions. [2020-10-15 04:43:08,548 INFO L78 Accepts]: Start accepts. Automaton has 44426 states and 74007 transitions. Word has length 196 [2020-10-15 04:43:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:08,548 INFO L479 AbstractCegarLoop]: Abstraction has 44426 states and 74007 transitions. [2020-10-15 04:43:08,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:43:08,548 INFO L276 IsEmpty]: Start isEmpty. Operand 44426 states and 74007 transitions. [2020-10-15 04:43:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-15 04:43:08,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:08,578 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:08,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:43:08,579 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:08,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1951621334, now seen corresponding path program 1 times [2020-10-15 04:43:08,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:08,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454888490] [2020-10-15 04:43:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:08,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:13,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:13,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-15 04:43:13,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:43:13,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:13,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 04:43:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:43:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-15 04:43:13,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:13,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:13,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:13,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:13,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:13,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:13,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:13,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:13,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 136 proven. 182 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-15 04:43:14,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454888490] [2020-10-15 04:43:14,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:43:14,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:43:14,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502293708] [2020-10-15 04:43:14,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:43:14,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:14,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:43:14,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:43:14,067 INFO L87 Difference]: Start difference. First operand 44426 states and 74007 transitions. Second operand 11 states. [2020-10-15 04:43:18,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:18,025 INFO L93 Difference]: Finished difference Result 96771 states and 161220 transitions. [2020-10-15 04:43:18,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:43:18,025 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 196 [2020-10-15 04:43:18,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:18,121 INFO L225 Difference]: With dead ends: 96771 [2020-10-15 04:43:18,121 INFO L226 Difference]: Without dead ends: 52338 [2020-10-15 04:43:18,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-15 04:43:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52338 states. [2020-10-15 04:43:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52338 to 52190. [2020-10-15 04:43:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52190 states. [2020-10-15 04:43:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52190 states to 52190 states and 86891 transitions. [2020-10-15 04:43:19,573 INFO L78 Accepts]: Start accepts. Automaton has 52190 states and 86891 transitions. Word has length 196 [2020-10-15 04:43:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:19,573 INFO L479 AbstractCegarLoop]: Abstraction has 52190 states and 86891 transitions. [2020-10-15 04:43:19,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:43:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 52190 states and 86891 transitions. [2020-10-15 04:43:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-15 04:43:19,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:19,610 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:19,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:43:19,610 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:19,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:19,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2024007892, now seen corresponding path program 1 times [2020-10-15 04:43:19,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:19,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219058091] [2020-10-15 04:43:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:20,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:24,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:24,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-15 04:43:24,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:43:24,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:24,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-15 04:43:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:43:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:24,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:24,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:24,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:24,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:43:24,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:24,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:43:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-15 04:43:24,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219058091] [2020-10-15 04:43:24,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:24,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:24,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577628647] [2020-10-15 04:43:24,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:24,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:24,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:24,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:24,800 INFO L87 Difference]: Start difference. First operand 52190 states and 86891 transitions. Second operand 5 states. [2020-10-15 04:43:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:27,644 INFO L93 Difference]: Finished difference Result 108757 states and 179456 transitions. [2020-10-15 04:43:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:27,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-15 04:43:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:27,730 INFO L225 Difference]: With dead ends: 108757 [2020-10-15 04:43:27,731 INFO L226 Difference]: Without dead ends: 64468 [2020-10-15 04:43:27,762 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 04:43:27,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64468 states. [2020-10-15 04:43:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64468 to 52190. [2020-10-15 04:43:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52190 states. [2020-10-15 04:43:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52190 states to 52190 states and 86891 transitions. [2020-10-15 04:43:29,041 INFO L78 Accepts]: Start accepts. Automaton has 52190 states and 86891 transitions. Word has length 196 [2020-10-15 04:43:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:29,042 INFO L479 AbstractCegarLoop]: Abstraction has 52190 states and 86891 transitions. [2020-10-15 04:43:29,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 52190 states and 86891 transitions. [2020-10-15 04:43:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-15 04:43:29,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:29,081 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:29,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:43:29,081 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:29,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:29,082 INFO L82 PathProgramCache]: Analyzing trace with hash -51993396, now seen corresponding path program 1 times [2020-10-15 04:43:29,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:29,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946740781] [2020-10-15 04:43:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:29,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:29,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:31,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:34,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:34,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-15 04:43:34,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:34,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:43:34,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:34,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-15 04:43:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:43:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:34,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:34,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:34,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:34,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:34,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:34,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-15 04:43:34,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946740781] [2020-10-15 04:43:34,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:34,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:34,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720332109] [2020-10-15 04:43:34,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:34,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:34,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:34,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:34,241 INFO L87 Difference]: Start difference. First operand 52190 states and 86891 transitions. Second operand 5 states. [2020-10-15 04:43:37,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:37,345 INFO L93 Difference]: Finished difference Result 123440 states and 203302 transitions. [2020-10-15 04:43:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:37,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-15 04:43:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:37,437 INFO L225 Difference]: With dead ends: 123440 [2020-10-15 04:43:37,437 INFO L226 Difference]: Without dead ends: 71291 [2020-10-15 04:43:37,486 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 04:43:37,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71291 states. [2020-10-15 04:43:38,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71291 to 52010. [2020-10-15 04:43:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52010 states. [2020-10-15 04:43:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52010 states to 52010 states and 86711 transitions. [2020-10-15 04:43:38,820 INFO L78 Accepts]: Start accepts. Automaton has 52010 states and 86711 transitions. Word has length 197 [2020-10-15 04:43:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:38,821 INFO L479 AbstractCegarLoop]: Abstraction has 52010 states and 86711 transitions. [2020-10-15 04:43:38,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:38,821 INFO L276 IsEmpty]: Start isEmpty. Operand 52010 states and 86711 transitions. [2020-10-15 04:43:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-15 04:43:38,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:38,856 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 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] [2020-10-15 04:43:38,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:43:38,857 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:38,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:38,857 INFO L82 PathProgramCache]: Analyzing trace with hash -459209448, now seen corresponding path program 1 times [2020-10-15 04:43:38,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:38,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133709129] [2020-10-15 04:43:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:38,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:38,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:39,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:43,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-15 04:43:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:43:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:43:43,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:43,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:43:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-15 04:43:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:43:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:43,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:43,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:43,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:43,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:43,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:43,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:43,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-15 04:43:43,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133709129] [2020-10-15 04:43:43,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:43,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:43,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582522891] [2020-10-15 04:43:43,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:43,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:43,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:43,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:43,980 INFO L87 Difference]: Start difference. First operand 52010 states and 86711 transitions. Second operand 5 states. [2020-10-15 04:43:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:46,813 INFO L93 Difference]: Finished difference Result 120848 states and 198598 transitions. [2020-10-15 04:43:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:46,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-15 04:43:46,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:46,911 INFO L225 Difference]: With dead ends: 120848 [2020-10-15 04:43:46,911 INFO L226 Difference]: Without dead ends: 68879 [2020-10-15 04:43:46,964 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 04:43:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68879 states. [2020-10-15 04:43:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68879 to 48776. [2020-10-15 04:43:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48776 states. [2020-10-15 04:43:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48776 states to 48776 states and 80813 transitions. [2020-10-15 04:43:50,056 INFO L78 Accepts]: Start accepts. Automaton has 48776 states and 80813 transitions. Word has length 197 [2020-10-15 04:43:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:50,056 INFO L479 AbstractCegarLoop]: Abstraction has 48776 states and 80813 transitions. [2020-10-15 04:43:50,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 48776 states and 80813 transitions. [2020-10-15 04:43:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-15 04:43:50,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:50,091 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:43:50,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:43:50,091 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash 686557070, now seen corresponding path program 1 times [2020-10-15 04:43:50,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:50,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646494044] [2020-10-15 04:43:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:50,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:50,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:50,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:51,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:55,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:55,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-15 04:43:55,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:43:55,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 04:43:55,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:55,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:43:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-15 04:43:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:43:55,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:55,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:43:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:55,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:43:55,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:43:55,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:43:55,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:43:55,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:43:55,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:43:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:43:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:43:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:43:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:43:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-15 04:43:55,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646494044] [2020-10-15 04:43:55,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:43:55,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:43:55,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897503379] [2020-10-15 04:43:55,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:43:55,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:43:55,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:43:55,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:43:55,251 INFO L87 Difference]: Start difference. First operand 48776 states and 80813 transitions. Second operand 5 states. [2020-10-15 04:43:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:43:57,926 INFO L93 Difference]: Finished difference Result 98909 states and 162077 transitions. [2020-10-15 04:43:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:43:57,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-15 04:43:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:43:58,002 INFO L225 Difference]: With dead ends: 98909 [2020-10-15 04:43:58,002 INFO L226 Difference]: Without dead ends: 56612 [2020-10-15 04:43:58,042 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 04:43:58,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56612 states. [2020-10-15 04:43:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56612 to 45080. [2020-10-15 04:43:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45080 states. [2020-10-15 04:43:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45080 states to 45080 states and 74045 transitions. [2020-10-15 04:43:59,250 INFO L78 Accepts]: Start accepts. Automaton has 45080 states and 74045 transitions. Word has length 197 [2020-10-15 04:43:59,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:43:59,250 INFO L479 AbstractCegarLoop]: Abstraction has 45080 states and 74045 transitions. [2020-10-15 04:43:59,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:43:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 45080 states and 74045 transitions. [2020-10-15 04:43:59,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-15 04:43:59,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:43:59,280 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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] [2020-10-15 04:43:59,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:43:59,280 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:43:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:43:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1033914101, now seen corresponding path program 1 times [2020-10-15 04:43:59,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:43:59,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586716209] [2020-10-15 04:43:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:43:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:43:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:43:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:00,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:04,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:04,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-15 04:44:04,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 04:44:04,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:04,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-15 04:44:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:44:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:04,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:04,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:04,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:04,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:44:04,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:04,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-15 04:44:04,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586716209] [2020-10-15 04:44:04,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:04,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:04,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620915788] [2020-10-15 04:44:04,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:04,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:04,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:04,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:04,418 INFO L87 Difference]: Start difference. First operand 45080 states and 74045 transitions. Second operand 5 states. [2020-10-15 04:44:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:06,802 INFO L93 Difference]: Finished difference Result 97534 states and 159371 transitions. [2020-10-15 04:44:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:06,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-15 04:44:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:44:06,872 INFO L225 Difference]: With dead ends: 97534 [2020-10-15 04:44:06,872 INFO L226 Difference]: Without dead ends: 52495 [2020-10-15 04:44:06,914 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 04:44:06,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52495 states. [2020-10-15 04:44:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52495 to 47390. [2020-10-15 04:44:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47390 states. [2020-10-15 04:44:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47390 states to 47390 states and 78275 transitions. [2020-10-15 04:44:09,378 INFO L78 Accepts]: Start accepts. Automaton has 47390 states and 78275 transitions. Word has length 199 [2020-10-15 04:44:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:44:09,379 INFO L479 AbstractCegarLoop]: Abstraction has 47390 states and 78275 transitions. [2020-10-15 04:44:09,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:44:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 47390 states and 78275 transitions. [2020-10-15 04:44:09,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-15 04:44:09,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:44:09,411 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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] [2020-10-15 04:44:09,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:44:09,411 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:44:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:44:09,411 INFO L82 PathProgramCache]: Analyzing trace with hash -856903221, now seen corresponding path program 1 times [2020-10-15 04:44:09,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:44:09,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987100449] [2020-10-15 04:44:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:44:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:09,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:09,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:14,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-15 04:44:14,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:44:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4968 [2020-10-15 04:44:14,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:14,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:44:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-15 04:44:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:44:14,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:44:14,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:44:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:44:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:44:14,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:44:14,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:44:14,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:44:14,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:44:14,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:44:14,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:44:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:44:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:44:14,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:44:14,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:44:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-15 04:44:14,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987100449] [2020-10-15 04:44:14,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:44:14,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:44:14,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40988425] [2020-10-15 04:44:14,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:44:14,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:44:14,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:44:14,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:44:14,567 INFO L87 Difference]: Start difference. First operand 47390 states and 78275 transitions. Second operand 5 states. [2020-10-15 04:44:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:44:17,230 INFO L93 Difference]: Finished difference Result 99398 states and 162986 transitions. [2020-10-15 04:44:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:44:17,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-15 04:44:17,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted.