/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=NARROWEST --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.04.i.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:32:54,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:32:54,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:32:55,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:32:55,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:32:55,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:32:55,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:32:55,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:32:55,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:32:55,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:32:55,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:32:55,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:32:55,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:32:55,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:32:55,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:32:55,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:32:55,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:32:55,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:32:55,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:32:55,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:32:55,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:32:55,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:32:55,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:32:55,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:32:55,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:32:55,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:32:55,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:32:55,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:32:55,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:32:55,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:32:55,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:32:55,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:32:55,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:32:55,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:32:55,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:32:55,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:32:55,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:32:55,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:32:55,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:32:55,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:32:55,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:32:55,050 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 [2020-10-13 15:32:55,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:32:55,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:32:55,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:32:55,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:32:55,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:32:55,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:32:55,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:32:55,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:32:55,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:32:55,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:32:55,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:32:55,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:32:55,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:32:55,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:32:55,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:32:55,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:32:55,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:32:55,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:32:55,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:32:55,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:32:55,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:32:55,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:32:55,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:32:55,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:32:55,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:32:55,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:32:55,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:32:55,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:32:55,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:32:55,112 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:32:55,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:32:55,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:32:55,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:32:55,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:32:55,478 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:32:55,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.04.i.cil.c [2020-10-13 15:32:55,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25a06b399/b89d74baccf44310872d1628ffec9c8d/FLAG461023cc8 [2020-10-13 15:32:56,104 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:32:56,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.04.i.cil.c [2020-10-13 15:32:56,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25a06b399/b89d74baccf44310872d1628ffec9c8d/FLAG461023cc8 [2020-10-13 15:32:56,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25a06b399/b89d74baccf44310872d1628ffec9c8d [2020-10-13 15:32:56,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:32:56,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:32:56,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:32:56,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:32:56,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:32:56,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:32:56" (1/1) ... [2020-10-13 15:32:56,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7976f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:56, skipping insertion in model container [2020-10-13 15:32:56,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:32:56" (1/1) ... [2020-10-13 15:32:56,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:32:56,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:32:56,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:32:56,920 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:32:57,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:32:57,129 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:32:57,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:57 WrapperNode [2020-10-13 15:32:57,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:32:57,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:32:57,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:32:57,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:32:57,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:57" (1/1) ... [2020-10-13 15:32:57,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:57" (1/1) ... [2020-10-13 15:32:57,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:57" (1/1) ... [2020-10-13 15:32:57,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:57" (1/1) ... [2020-10-13 15:32:57,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:57" (1/1) ... [2020-10-13 15:32:57,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:57" (1/1) ... [2020-10-13 15:32:57,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:57" (1/1) ... [2020-10-13 15:32:57,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:32:57,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:32:57,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:32:57,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:32:57,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:57" (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 [2020-10-13 15:32:57,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:32:57,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:32:57,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:32:57,366 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:32:57,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:32:57,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:32:57,367 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:32:57,367 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:32:57,367 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:32:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:32:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:32:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:32:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:32:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:32:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:32:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:32:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:32:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:32:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:32:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:32:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:32:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:32:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:32:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:32:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:32:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:32:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:32:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:32:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:32:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:32:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:32:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:32:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:32:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:32:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:32:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:32:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:32:57,820 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:32:58,465 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:32:58,466 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:32:58,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:32:58,491 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:32:58,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:32:58 BoogieIcfgContainer [2020-10-13 15:32:58,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:32:58,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:32:58,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:32:58,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:32:58,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:32:56" (1/3) ... [2020-10-13 15:32:58,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7590f723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:32:58, skipping insertion in model container [2020-10-13 15:32:58,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:57" (2/3) ... [2020-10-13 15:32:58,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7590f723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:32:58, skipping insertion in model container [2020-10-13 15:32:58,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:32:58" (3/3) ... [2020-10-13 15:32:58,505 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.04.i.cil.c [2020-10-13 15:32:58,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:32:58,528 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:32:58,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:32:58,574 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:32:58,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:32:58,574 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:32:58,575 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:32:58,575 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:32:58,575 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:32:58,575 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:32:58,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:32:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-10-13 15:32:58,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 15:32:58,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:58,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:58,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:58,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:58,618 INFO L82 PathProgramCache]: Analyzing trace with hash 416306971, now seen corresponding path program 1 times [2020-10-13 15:32:58,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:58,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972726639] [2020-10-13 15:32:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:58,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:59,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:59,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 15:32:59,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:59,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-13 15:32:59,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:32:59,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:33:00,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:00,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:00,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:00,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:00,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:33:00,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:33:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:00,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972726639] [2020-10-13 15:33:00,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:00,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:00,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816901083] [2020-10-13 15:33:00,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:00,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:00,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:00,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:00,107 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 5 states. [2020-10-13 15:33:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:01,100 INFO L93 Difference]: Finished difference Result 323 states and 538 transitions. [2020-10-13 15:33:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:01,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-13 15:33:01,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:01,117 INFO L225 Difference]: With dead ends: 323 [2020-10-13 15:33:01,118 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 15:33:01,122 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 [2020-10-13 15:33:01,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 15:33:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2020-10-13 15:33:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-13 15:33:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 222 transitions. [2020-10-13 15:33:01,214 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 222 transitions. Word has length 51 [2020-10-13 15:33:01,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:01,215 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 222 transitions. [2020-10-13 15:33:01,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 222 transitions. [2020-10-13 15:33:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:33:01,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:01,219 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:33:01,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:33:01,220 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:01,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:01,220 INFO L82 PathProgramCache]: Analyzing trace with hash -816750361, now seen corresponding path program 1 times [2020-10-13 15:33:01,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:01,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826401105] [2020-10-13 15:33:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:01,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:01,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:01,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:02,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:02,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:33:02,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:02,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-10-13 15:33:02,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:33:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:33:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:33:02,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:02,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:02,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:02,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:02,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:33:02,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:02,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:02,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826401105] [2020-10-13 15:33:02,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:02,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:02,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855158028] [2020-10-13 15:33:02,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:02,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:02,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:02,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:02,626 INFO L87 Difference]: Start difference. First operand 147 states and 222 transitions. Second operand 5 states. [2020-10-13 15:33:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:03,368 INFO L93 Difference]: Finished difference Result 286 states and 429 transitions. [2020-10-13 15:33:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:03,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:33:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:03,370 INFO L225 Difference]: With dead ends: 286 [2020-10-13 15:33:03,371 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 15:33:03,372 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 [2020-10-13 15:33:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 15:33:03,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2020-10-13 15:33:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-13 15:33:03,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 221 transitions. [2020-10-13 15:33:03,385 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 221 transitions. Word has length 64 [2020-10-13 15:33:03,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:03,385 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 221 transitions. [2020-10-13 15:33:03,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:03,385 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 221 transitions. [2020-10-13 15:33:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:33:03,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:03,388 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:33:03,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:33:03,388 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:03,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:03,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1981568581, now seen corresponding path program 1 times [2020-10-13 15:33:03,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:03,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459480879] [2020-10-13 15:33:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:03,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:03,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:05,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:07,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:07,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:33:07,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:07,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4108 [2020-10-13 15:33:07,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:33:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:33:07,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:07,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:07,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:07,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:07,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:33:07,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:07,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:07,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459480879] [2020-10-13 15:33:07,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:07,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:07,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185783190] [2020-10-13 15:33:07,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:07,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:07,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:07,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:07,641 INFO L87 Difference]: Start difference. First operand 147 states and 221 transitions. Second operand 5 states. [2020-10-13 15:33:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:08,284 INFO L93 Difference]: Finished difference Result 285 states and 427 transitions. [2020-10-13 15:33:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:08,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:33:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:08,286 INFO L225 Difference]: With dead ends: 285 [2020-10-13 15:33:08,287 INFO L226 Difference]: Without dead ends: 163 [2020-10-13 15:33:08,290 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 [2020-10-13 15:33:08,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-13 15:33:08,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 147. [2020-10-13 15:33:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-13 15:33:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 220 transitions. [2020-10-13 15:33:08,301 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 220 transitions. Word has length 65 [2020-10-13 15:33:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:08,301 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 220 transitions. [2020-10-13 15:33:08,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:08,302 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 220 transitions. [2020-10-13 15:33:08,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:33:08,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:08,304 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:33:08,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:33:08,304 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:08,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1143557809, now seen corresponding path program 1 times [2020-10-13 15:33:08,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:08,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252483012] [2020-10-13 15:33:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:08,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:08,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:08,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:09,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:13,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:33:13,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:33:13,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 15:33:13,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:33:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:33:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:33:13,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:13,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:13,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:13,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:13,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:33:13,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:13,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:13,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:13,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:13,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:13,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252483012] [2020-10-13 15:33:13,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:13,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:33:13,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170419423] [2020-10-13 15:33:13,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:33:13,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:13,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:33:13,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:33:13,530 INFO L87 Difference]: Start difference. First operand 147 states and 220 transitions. Second operand 6 states. [2020-10-13 15:33:14,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:14,390 INFO L93 Difference]: Finished difference Result 382 states and 580 transitions. [2020-10-13 15:33:14,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:33:14,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-13 15:33:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:14,393 INFO L225 Difference]: With dead ends: 382 [2020-10-13 15:33:14,393 INFO L226 Difference]: Without dead ends: 260 [2020-10-13 15:33:14,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:33:14,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-13 15:33:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 172. [2020-10-13 15:33:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:33:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 257 transitions. [2020-10-13 15:33:14,422 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 257 transitions. Word has length 65 [2020-10-13 15:33:14,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:14,423 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 257 transitions. [2020-10-13 15:33:14,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:33:14,425 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 257 transitions. [2020-10-13 15:33:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:33:14,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:14,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:14,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:33:14,427 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:14,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1284246148, now seen corresponding path program 1 times [2020-10-13 15:33:14,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:14,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208398028] [2020-10-13 15:33:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:15,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:15,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:33:15,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-13 15:33:15,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:33:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:33:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:15,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:15,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:15,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:15,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:15,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:33:15,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:15,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:15,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:15,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:15,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:15,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208398028] [2020-10-13 15:33:15,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:15,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:15,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324004693] [2020-10-13 15:33:15,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:15,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:15,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:15,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:15,380 INFO L87 Difference]: Start difference. First operand 172 states and 257 transitions. Second operand 5 states. [2020-10-13 15:33:15,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:15,960 INFO L93 Difference]: Finished difference Result 333 states and 497 transitions. [2020-10-13 15:33:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:15,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:33:15,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:15,966 INFO L225 Difference]: With dead ends: 333 [2020-10-13 15:33:15,966 INFO L226 Difference]: Without dead ends: 186 [2020-10-13 15:33:15,967 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 [2020-10-13 15:33:15,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-13 15:33:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2020-10-13 15:33:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:33:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 256 transitions. [2020-10-13 15:33:15,989 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 256 transitions. Word has length 65 [2020-10-13 15:33:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:15,989 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 256 transitions. [2020-10-13 15:33:15,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 256 transitions. [2020-10-13 15:33:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:33:15,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:15,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:15,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:33:15,994 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:15,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:15,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1784897669, now seen corresponding path program 1 times [2020-10-13 15:33:15,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:15,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879070570] [2020-10-13 15:33:15,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:16,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:16,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:33:16,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:16,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-13 15:33:16,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:33:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:33:16,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:16,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:16,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:16,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:16,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:16,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:33:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:16,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879070570] [2020-10-13 15:33:16,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:16,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:16,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215688617] [2020-10-13 15:33:16,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:16,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:16,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:16,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:16,522 INFO L87 Difference]: Start difference. First operand 172 states and 256 transitions. Second operand 5 states. [2020-10-13 15:33:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:17,053 INFO L93 Difference]: Finished difference Result 332 states and 495 transitions. [2020-10-13 15:33:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:17,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:33:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:17,055 INFO L225 Difference]: With dead ends: 332 [2020-10-13 15:33:17,056 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 15:33:17,056 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 [2020-10-13 15:33:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 15:33:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2020-10-13 15:33:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:33:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 255 transitions. [2020-10-13 15:33:17,065 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 255 transitions. Word has length 65 [2020-10-13 15:33:17,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:17,065 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 255 transitions. [2020-10-13 15:33:17,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:17,066 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 255 transitions. [2020-10-13 15:33:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:33:17,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:17,067 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:33:17,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:33:17,067 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:17,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:17,068 INFO L82 PathProgramCache]: Analyzing trace with hash -666412894, now seen corresponding path program 1 times [2020-10-13 15:33:17,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:17,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778102093] [2020-10-13 15:33:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:17,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:17,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:17,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:17,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:21,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:21,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:33:21,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:21,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4551 [2020-10-13 15:33:21,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:21,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:33:21,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:33:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:21,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:21,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:21,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:21,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:21,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:21,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778102093] [2020-10-13 15:33:21,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:21,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:21,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887799483] [2020-10-13 15:33:21,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:21,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:21,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:21,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:21,706 INFO L87 Difference]: Start difference. First operand 172 states and 255 transitions. Second operand 5 states. [2020-10-13 15:33:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:22,275 INFO L93 Difference]: Finished difference Result 332 states and 494 transitions. [2020-10-13 15:33:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:22,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:33:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:22,277 INFO L225 Difference]: With dead ends: 332 [2020-10-13 15:33:22,277 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 15:33:22,278 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 [2020-10-13 15:33:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 15:33:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2020-10-13 15:33:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:33:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 254 transitions. [2020-10-13 15:33:22,288 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 254 transitions. Word has length 66 [2020-10-13 15:33:22,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:22,288 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 254 transitions. [2020-10-13 15:33:22,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 254 transitions. [2020-10-13 15:33:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:33:22,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:22,296 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:33:22,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:33:22,297 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:22,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:22,297 INFO L82 PathProgramCache]: Analyzing trace with hash -400531393, now seen corresponding path program 1 times [2020-10-13 15:33:22,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:22,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378020213] [2020-10-13 15:33:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:22,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:22,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:22,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:24,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:26,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:26,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 15:33:26,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3955 [2020-10-13 15:33:26,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:33:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:33:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:26,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:26,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:26,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:26,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:26,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:26,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:26,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:26,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:33:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:26,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378020213] [2020-10-13 15:33:26,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:26,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:26,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065047140] [2020-10-13 15:33:26,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:26,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:26,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:26,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:26,351 INFO L87 Difference]: Start difference. First operand 172 states and 254 transitions. Second operand 5 states. [2020-10-13 15:33:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:26,989 INFO L93 Difference]: Finished difference Result 332 states and 493 transitions. [2020-10-13 15:33:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:26,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-13 15:33:26,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:26,991 INFO L225 Difference]: With dead ends: 332 [2020-10-13 15:33:26,991 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 15:33:26,992 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 [2020-10-13 15:33:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 15:33:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2020-10-13 15:33:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:33:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 253 transitions. [2020-10-13 15:33:26,998 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 253 transitions. Word has length 67 [2020-10-13 15:33:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:26,999 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 253 transitions. [2020-10-13 15:33:26,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 253 transitions. [2020-10-13 15:33:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 15:33:27,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:27,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:27,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:33:27,001 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:27,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1950840099, now seen corresponding path program 1 times [2020-10-13 15:33:27,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:27,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844480704] [2020-10-13 15:33:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:28,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:30,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:30,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 15:33:30,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3047 [2020-10-13 15:33:30,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:33:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:33:30,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:30,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:30,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:30,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:30,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:30,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:30,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:30,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:30,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:30,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844480704] [2020-10-13 15:33:30,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:30,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:30,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646912713] [2020-10-13 15:33:30,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:30,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:30,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:30,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:30,147 INFO L87 Difference]: Start difference. First operand 172 states and 253 transitions. Second operand 5 states. [2020-10-13 15:33:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:30,916 INFO L93 Difference]: Finished difference Result 332 states and 492 transitions. [2020-10-13 15:33:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:30,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-13 15:33:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:30,918 INFO L225 Difference]: With dead ends: 332 [2020-10-13 15:33:30,918 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 15:33:30,920 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 [2020-10-13 15:33:30,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 15:33:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2020-10-13 15:33:30,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:33:30,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 252 transitions. [2020-10-13 15:33:30,931 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 252 transitions. Word has length 68 [2020-10-13 15:33:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:30,932 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 252 transitions. [2020-10-13 15:33:30,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 252 transitions. [2020-10-13 15:33:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 15:33:30,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:30,934 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:30,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:33:30,935 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:30,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:30,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1266106814, now seen corresponding path program 1 times [2020-10-13 15:33:30,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:30,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373577258] [2020-10-13 15:33:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:31,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 15:33:31,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-13 15:33:31,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:33:31,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:31,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:31,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:31,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:31,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:31,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:31,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:31,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373577258] [2020-10-13 15:33:31,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:31,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:31,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690697582] [2020-10-13 15:33:31,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:31,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:31,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:31,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:31,294 INFO L87 Difference]: Start difference. First operand 172 states and 252 transitions. Second operand 5 states. [2020-10-13 15:33:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:31,927 INFO L93 Difference]: Finished difference Result 362 states and 540 transitions. [2020-10-13 15:33:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:31,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-13 15:33:31,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:31,929 INFO L225 Difference]: With dead ends: 362 [2020-10-13 15:33:31,929 INFO L226 Difference]: Without dead ends: 215 [2020-10-13 15:33:31,930 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 [2020-10-13 15:33:31,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-13 15:33:31,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 194. [2020-10-13 15:33:31,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 290 transitions. [2020-10-13 15:33:31,938 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 290 transitions. Word has length 68 [2020-10-13 15:33:31,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:31,938 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 290 transitions. [2020-10-13 15:33:31,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:31,939 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 290 transitions. [2020-10-13 15:33:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 15:33:31,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:31,940 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:33:31,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:33:31,940 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:31,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:31,941 INFO L82 PathProgramCache]: Analyzing trace with hash 326496922, now seen corresponding path program 1 times [2020-10-13 15:33:31,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:31,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716260086] [2020-10-13 15:33:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:31,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:32,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:33,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:34,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:34,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 15:33:34,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2652 [2020-10-13 15:33:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:33:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:33:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:34,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:34,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:34,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:34,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:34,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:34,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:34,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:34,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716260086] [2020-10-13 15:33:34,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:34,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:34,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679905654] [2020-10-13 15:33:34,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:34,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:34,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:34,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:34,671 INFO L87 Difference]: Start difference. First operand 194 states and 290 transitions. Second operand 5 states. [2020-10-13 15:33:35,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:35,200 INFO L93 Difference]: Finished difference Result 366 states and 555 transitions. [2020-10-13 15:33:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:35,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-13 15:33:35,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:35,202 INFO L225 Difference]: With dead ends: 366 [2020-10-13 15:33:35,202 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 15:33:35,203 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 [2020-10-13 15:33:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 15:33:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 194. [2020-10-13 15:33:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 289 transitions. [2020-10-13 15:33:35,210 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 289 transitions. Word has length 69 [2020-10-13 15:33:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:35,211 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 289 transitions. [2020-10-13 15:33:35,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 289 transitions. [2020-10-13 15:33:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:33:35,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:35,212 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:35,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:33:35,213 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:35,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:35,213 INFO L82 PathProgramCache]: Analyzing trace with hash 619583268, now seen corresponding path program 1 times [2020-10-13 15:33:35,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:35,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104492846] [2020-10-13 15:33:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:35,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:35,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:35,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:35,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:36,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:33:36,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-10-13 15:33:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:33:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:36,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:36,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:36,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:36,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:36,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:36,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:36,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104492846] [2020-10-13 15:33:36,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:36,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:36,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693260496] [2020-10-13 15:33:36,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:36,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:36,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:36,125 INFO L87 Difference]: Start difference. First operand 194 states and 289 transitions. Second operand 5 states. [2020-10-13 15:33:36,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:36,736 INFO L93 Difference]: Finished difference Result 384 states and 576 transitions. [2020-10-13 15:33:36,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:36,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:33:36,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:36,740 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:33:36,740 INFO L226 Difference]: Without dead ends: 215 [2020-10-13 15:33:36,741 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 [2020-10-13 15:33:36,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-13 15:33:36,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 194. [2020-10-13 15:33:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 288 transitions. [2020-10-13 15:33:36,748 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 288 transitions. Word has length 81 [2020-10-13 15:33:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:36,749 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 288 transitions. [2020-10-13 15:33:36,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:36,749 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 288 transitions. [2020-10-13 15:33:36,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:33:36,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:36,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:36,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:33:36,751 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:36,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1434051609, now seen corresponding path program 1 times [2020-10-13 15:33:36,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:36,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413235726] [2020-10-13 15:33:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:36,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:36,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:36,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:37,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:37,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:37,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:33:37,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:37,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-10-13 15:33:37,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:33:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:37,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:37,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:37,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:37,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:37,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:37,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:37,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:37,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:37,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:37,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413235726] [2020-10-13 15:33:37,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:37,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:37,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962017226] [2020-10-13 15:33:37,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:37,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:37,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:37,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:37,551 INFO L87 Difference]: Start difference. First operand 194 states and 288 transitions. Second operand 5 states. [2020-10-13 15:33:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:38,110 INFO L93 Difference]: Finished difference Result 382 states and 572 transitions. [2020-10-13 15:33:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:38,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:33:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:38,112 INFO L225 Difference]: With dead ends: 382 [2020-10-13 15:33:38,113 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:33:38,114 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 [2020-10-13 15:33:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:33:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 194. [2020-10-13 15:33:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:38,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 287 transitions. [2020-10-13 15:33:38,121 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 287 transitions. Word has length 82 [2020-10-13 15:33:38,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:38,121 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 287 transitions. [2020-10-13 15:33:38,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:38,122 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 287 transitions. [2020-10-13 15:33:38,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:33:38,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:38,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:38,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:33:38,123 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:38,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:38,124 INFO L82 PathProgramCache]: Analyzing trace with hash -933400088, now seen corresponding path program 1 times [2020-10-13 15:33:38,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:38,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882764821] [2020-10-13 15:33:38,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:38,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:33:38,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-13 15:33:38,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:33:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:38,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:38,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:38,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:38,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:38,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882764821] [2020-10-13 15:33:38,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:38,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:38,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827211329] [2020-10-13 15:33:38,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:38,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:38,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:38,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:38,583 INFO L87 Difference]: Start difference. First operand 194 states and 287 transitions. Second operand 5 states. [2020-10-13 15:33:39,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:39,135 INFO L93 Difference]: Finished difference Result 381 states and 569 transitions. [2020-10-13 15:33:39,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:39,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:33:39,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:39,138 INFO L225 Difference]: With dead ends: 381 [2020-10-13 15:33:39,138 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 15:33:39,139 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 [2020-10-13 15:33:39,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 15:33:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 194. [2020-10-13 15:33:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 286 transitions. [2020-10-13 15:33:39,150 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 286 transitions. Word has length 82 [2020-10-13 15:33:39,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:39,151 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 286 transitions. [2020-10-13 15:33:39,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:39,151 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 286 transitions. [2020-10-13 15:33:39,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 15:33:39,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:39,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:39,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:33:39,152 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:39,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:39,153 INFO L82 PathProgramCache]: Analyzing trace with hash 757172403, now seen corresponding path program 1 times [2020-10-13 15:33:39,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:39,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151173275] [2020-10-13 15:33:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:44,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 15:33:44,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:33:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:33:44,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:33:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:44,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:44,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:44,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:44,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:44,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:44,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151173275] [2020-10-13 15:33:44,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:44,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:44,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406220727] [2020-10-13 15:33:44,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:44,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:44,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:44,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:44,250 INFO L87 Difference]: Start difference. First operand 194 states and 286 transitions. Second operand 5 states. [2020-10-13 15:33:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:44,802 INFO L93 Difference]: Finished difference Result 380 states and 566 transitions. [2020-10-13 15:33:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:44,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-13 15:33:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:44,805 INFO L225 Difference]: With dead ends: 380 [2020-10-13 15:33:44,805 INFO L226 Difference]: Without dead ends: 211 [2020-10-13 15:33:44,806 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 [2020-10-13 15:33:44,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-13 15:33:44,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 194. [2020-10-13 15:33:44,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 285 transitions. [2020-10-13 15:33:44,820 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 285 transitions. Word has length 83 [2020-10-13 15:33:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:44,821 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 285 transitions. [2020-10-13 15:33:44,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 285 transitions. [2020-10-13 15:33:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 15:33:44,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:44,823 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:44,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:33:44,824 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:44,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:44,825 INFO L82 PathProgramCache]: Analyzing trace with hash 965702559, now seen corresponding path program 1 times [2020-10-13 15:33:44,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:44,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689342252] [2020-10-13 15:33:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:44,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:45,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:49,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:49,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 15:33:49,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:49,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:33:49,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:33:49,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:49,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:49,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:49,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:49,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:49,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:49,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689342252] [2020-10-13 15:33:49,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:49,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:49,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564207543] [2020-10-13 15:33:49,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:49,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:49,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:49,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:49,912 INFO L87 Difference]: Start difference. First operand 194 states and 285 transitions. Second operand 5 states. [2020-10-13 15:33:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:50,441 INFO L93 Difference]: Finished difference Result 380 states and 564 transitions. [2020-10-13 15:33:50,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:50,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-13 15:33:50,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:50,444 INFO L225 Difference]: With dead ends: 380 [2020-10-13 15:33:50,444 INFO L226 Difference]: Without dead ends: 211 [2020-10-13 15:33:50,445 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 [2020-10-13 15:33:50,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-13 15:33:50,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 194. [2020-10-13 15:33:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 284 transitions. [2020-10-13 15:33:50,452 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 284 transitions. Word has length 83 [2020-10-13 15:33:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:50,452 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 284 transitions. [2020-10-13 15:33:50,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 284 transitions. [2020-10-13 15:33:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 15:33:50,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:50,454 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:50,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:33:50,454 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:50,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:50,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1344559902, now seen corresponding path program 1 times [2020-10-13 15:33:50,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:50,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109576315] [2020-10-13 15:33:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:50,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:50,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:50,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:50,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:52,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:52,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:55,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:55,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 15:33:55,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:55,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:33:55,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:55,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:33:55,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:55,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:55,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:55,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:55,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:55,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:55,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109576315] [2020-10-13 15:33:55,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:55,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:55,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130010458] [2020-10-13 15:33:55,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:55,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:55,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:55,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:55,539 INFO L87 Difference]: Start difference. First operand 194 states and 284 transitions. Second operand 5 states. [2020-10-13 15:33:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:56,084 INFO L93 Difference]: Finished difference Result 380 states and 562 transitions. [2020-10-13 15:33:56,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:56,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-13 15:33:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:56,086 INFO L225 Difference]: With dead ends: 380 [2020-10-13 15:33:56,086 INFO L226 Difference]: Without dead ends: 211 [2020-10-13 15:33:56,087 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 [2020-10-13 15:33:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-13 15:33:56,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 194. [2020-10-13 15:33:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 283 transitions. [2020-10-13 15:33:56,095 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 283 transitions. Word has length 84 [2020-10-13 15:33:56,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:56,095 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 283 transitions. [2020-10-13 15:33:56,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 283 transitions. [2020-10-13 15:33:56,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 15:33:56,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:56,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:56,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:33:56,098 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:56,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:56,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1150952806, now seen corresponding path program 1 times [2020-10-13 15:33:56,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:56,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143978428] [2020-10-13 15:33:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:56,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:56,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:01,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 15:34:01,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:01,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:34:01,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:01,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:01,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:34:01,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:34:01,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:01,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:01,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:01,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:01,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:01,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143978428] [2020-10-13 15:34:01,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:01,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:01,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858158888] [2020-10-13 15:34:01,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:01,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:01,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:01,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:01,173 INFO L87 Difference]: Start difference. First operand 194 states and 283 transitions. Second operand 5 states. [2020-10-13 15:34:01,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:01,708 INFO L93 Difference]: Finished difference Result 380 states and 560 transitions. [2020-10-13 15:34:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:01,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-13 15:34:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:01,710 INFO L225 Difference]: With dead ends: 380 [2020-10-13 15:34:01,710 INFO L226 Difference]: Without dead ends: 211 [2020-10-13 15:34:01,711 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 [2020-10-13 15:34:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-13 15:34:01,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 194. [2020-10-13 15:34:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:34:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 282 transitions. [2020-10-13 15:34:01,719 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 282 transitions. Word has length 85 [2020-10-13 15:34:01,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:01,719 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 282 transitions. [2020-10-13 15:34:01,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 282 transitions. [2020-10-13 15:34:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:34:01,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:01,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:01,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:34:01,721 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:01,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:01,721 INFO L82 PathProgramCache]: Analyzing trace with hash -646800771, now seen corresponding path program 1 times [2020-10-13 15:34:01,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:01,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480495315] [2020-10-13 15:34:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:01,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:03,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:03,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:06,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:06,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:34:06,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:34:06,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:34:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:34:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:06,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:06,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:06,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:06,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:06,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:06,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:06,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:34:06,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480495315] [2020-10-13 15:34:06,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:06,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:06,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217657534] [2020-10-13 15:34:06,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:06,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:06,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:06,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:06,794 INFO L87 Difference]: Start difference. First operand 194 states and 282 transitions. Second operand 5 states. [2020-10-13 15:34:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:07,352 INFO L93 Difference]: Finished difference Result 370 states and 546 transitions. [2020-10-13 15:34:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:07,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:34:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:07,354 INFO L225 Difference]: With dead ends: 370 [2020-10-13 15:34:07,354 INFO L226 Difference]: Without dead ends: 201 [2020-10-13 15:34:07,355 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 [2020-10-13 15:34:07,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-13 15:34:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 194. [2020-10-13 15:34:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:34:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 281 transitions. [2020-10-13 15:34:07,363 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 281 transitions. Word has length 86 [2020-10-13 15:34:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:07,363 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 281 transitions. [2020-10-13 15:34:07,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:07,363 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 281 transitions. [2020-10-13 15:34:07,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:34:07,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:07,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:07,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:34:07,365 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:07,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:07,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1569801065, now seen corresponding path program 1 times [2020-10-13 15:34:07,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:07,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705660148] [2020-10-13 15:34:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:08,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 15:34:08,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-10-13 15:34:08,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 15:34:08,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:08,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:08,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:34:08,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:08,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705660148] [2020-10-13 15:34:08,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:08,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:08,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778807329] [2020-10-13 15:34:08,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:08,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:08,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:08,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:08,120 INFO L87 Difference]: Start difference. First operand 194 states and 281 transitions. Second operand 5 states. [2020-10-13 15:34:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:08,877 INFO L93 Difference]: Finished difference Result 458 states and 680 transitions. [2020-10-13 15:34:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:08,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 15:34:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:08,881 INFO L225 Difference]: With dead ends: 458 [2020-10-13 15:34:08,881 INFO L226 Difference]: Without dead ends: 289 [2020-10-13 15:34:08,882 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 [2020-10-13 15:34:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-13 15:34:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 237. [2020-10-13 15:34:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-13 15:34:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 359 transitions. [2020-10-13 15:34:08,890 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 359 transitions. Word has length 90 [2020-10-13 15:34:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:08,890 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 359 transitions. [2020-10-13 15:34:08,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 359 transitions. [2020-10-13 15:34:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:34:08,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:08,892 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:08,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:34:08,892 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:08,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1827772953, now seen corresponding path program 1 times [2020-10-13 15:34:08,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:08,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676201146] [2020-10-13 15:34:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:09,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:09,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:09,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 15:34:09,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-13 15:34:09,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:34:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:09,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:09,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:09,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:09,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:09,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:09,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676201146] [2020-10-13 15:34:09,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:09,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:09,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577697583] [2020-10-13 15:34:09,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:09,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:09,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:09,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:09,393 INFO L87 Difference]: Start difference. First operand 237 states and 359 transitions. Second operand 5 states. [2020-10-13 15:34:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:10,099 INFO L93 Difference]: Finished difference Result 498 states and 764 transitions. [2020-10-13 15:34:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:10,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 15:34:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:10,102 INFO L225 Difference]: With dead ends: 498 [2020-10-13 15:34:10,102 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:34:10,103 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 [2020-10-13 15:34:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:34:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 261. [2020-10-13 15:34:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 401 transitions. [2020-10-13 15:34:10,110 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 401 transitions. Word has length 90 [2020-10-13 15:34:10,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:10,111 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 401 transitions. [2020-10-13 15:34:10,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:10,111 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 401 transitions. [2020-10-13 15:34:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:34:10,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:10,112 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:10,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:34:10,112 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:10,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:10,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1047315691, now seen corresponding path program 1 times [2020-10-13 15:34:10,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:10,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63737392] [2020-10-13 15:34:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:11,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:11,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:34:11,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-10-13 15:34:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:34:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:11,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:11,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:11,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:11,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:11,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:11,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:11,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:11,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63737392] [2020-10-13 15:34:11,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:11,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:11,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604079366] [2020-10-13 15:34:11,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:11,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:11,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:11,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:11,619 INFO L87 Difference]: Start difference. First operand 261 states and 401 transitions. Second operand 5 states. [2020-10-13 15:34:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:12,374 INFO L93 Difference]: Finished difference Result 549 states and 841 transitions. [2020-10-13 15:34:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:12,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:34:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:12,378 INFO L225 Difference]: With dead ends: 549 [2020-10-13 15:34:12,378 INFO L226 Difference]: Without dead ends: 313 [2020-10-13 15:34:12,379 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 [2020-10-13 15:34:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-13 15:34:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 261. [2020-10-13 15:34:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 400 transitions. [2020-10-13 15:34:12,387 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 400 transitions. Word has length 103 [2020-10-13 15:34:12,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:12,387 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 400 transitions. [2020-10-13 15:34:12,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:12,387 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 400 transitions. [2020-10-13 15:34:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:34:12,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:12,388 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:12,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:34:12,389 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:12,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1087990441, now seen corresponding path program 1 times [2020-10-13 15:34:12,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:12,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224301969] [2020-10-13 15:34:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:12,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:12,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:13,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:13,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:34:13,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:13,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1353 [2020-10-13 15:34:13,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:34:13,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:13,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:13,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:13,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:13,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:13,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:13,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:13,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:13,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:13,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:13,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:13,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:13,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224301969] [2020-10-13 15:34:13,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:13,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:13,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027255325] [2020-10-13 15:34:13,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:13,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:13,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:13,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:13,825 INFO L87 Difference]: Start difference. First operand 261 states and 400 transitions. Second operand 5 states. [2020-10-13 15:34:14,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:14,515 INFO L93 Difference]: Finished difference Result 522 states and 803 transitions. [2020-10-13 15:34:14,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:14,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:34:14,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:14,518 INFO L225 Difference]: With dead ends: 522 [2020-10-13 15:34:14,518 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:34:14,519 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 [2020-10-13 15:34:14,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:34:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 261. [2020-10-13 15:34:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 399 transitions. [2020-10-13 15:34:14,528 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 399 transitions. Word has length 103 [2020-10-13 15:34:14,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:14,528 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 399 transitions. [2020-10-13 15:34:14,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 399 transitions. [2020-10-13 15:34:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:34:14,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:14,530 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:14,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:34:14,531 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:14,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1059248384, now seen corresponding path program 1 times [2020-10-13 15:34:14,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:14,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935551031] [2020-10-13 15:34:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:14,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:15,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:15,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:15,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:34:15,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1347 [2020-10-13 15:34:15,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:34:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:15,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:15,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:15,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:15,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:15,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935551031] [2020-10-13 15:34:15,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:15,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:15,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579686458] [2020-10-13 15:34:15,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:15,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:15,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:15,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:15,977 INFO L87 Difference]: Start difference. First operand 261 states and 399 transitions. Second operand 5 states. [2020-10-13 15:34:16,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:16,711 INFO L93 Difference]: Finished difference Result 547 states and 835 transitions. [2020-10-13 15:34:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:16,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:34:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:16,714 INFO L225 Difference]: With dead ends: 547 [2020-10-13 15:34:16,715 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:34:16,716 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 [2020-10-13 15:34:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:34:16,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 261. [2020-10-13 15:34:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:16,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 398 transitions. [2020-10-13 15:34:16,724 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 398 transitions. Word has length 104 [2020-10-13 15:34:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:16,725 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 398 transitions. [2020-10-13 15:34:16,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:16,725 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 398 transitions. [2020-10-13 15:34:16,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:34:16,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:16,726 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:16,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:34:16,727 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:16,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:16,727 INFO L82 PathProgramCache]: Analyzing trace with hash -558596863, now seen corresponding path program 1 times [2020-10-13 15:34:16,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:16,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091220758] [2020-10-13 15:34:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:16,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:16,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:16,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:17,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:17,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:34:17,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-10-13 15:34:17,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:34:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:17,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:17,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:17,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:17,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:17,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:17,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:17,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:17,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:17,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:17,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091220758] [2020-10-13 15:34:17,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:17,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:17,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451537020] [2020-10-13 15:34:17,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:17,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:17,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:17,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:17,421 INFO L87 Difference]: Start difference. First operand 261 states and 398 transitions. Second operand 5 states. [2020-10-13 15:34:18,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:18,143 INFO L93 Difference]: Finished difference Result 546 states and 832 transitions. [2020-10-13 15:34:18,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:18,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:34:18,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:18,146 INFO L225 Difference]: With dead ends: 546 [2020-10-13 15:34:18,146 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 15:34:18,147 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 [2020-10-13 15:34:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 15:34:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 261. [2020-10-13 15:34:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:18,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 397 transitions. [2020-10-13 15:34:18,155 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 397 transitions. Word has length 104 [2020-10-13 15:34:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:18,155 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 397 transitions. [2020-10-13 15:34:18,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:18,156 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 397 transitions. [2020-10-13 15:34:18,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:34:18,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:18,157 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:18,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:34:18,157 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:18,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:18,158 INFO L82 PathProgramCache]: Analyzing trace with hash 201668866, now seen corresponding path program 1 times [2020-10-13 15:34:18,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:18,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235665142] [2020-10-13 15:34:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:19,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:19,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:34:19,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-10-13 15:34:19,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:34:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:19,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:19,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:19,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:19,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:19,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:19,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235665142] [2020-10-13 15:34:19,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:19,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:19,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437298702] [2020-10-13 15:34:19,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:19,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:19,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:19,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:19,570 INFO L87 Difference]: Start difference. First operand 261 states and 397 transitions. Second operand 5 states. [2020-10-13 15:34:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:20,212 INFO L93 Difference]: Finished difference Result 520 states and 795 transitions. [2020-10-13 15:34:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:20,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:34:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:20,215 INFO L225 Difference]: With dead ends: 520 [2020-10-13 15:34:20,215 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:34:20,216 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 [2020-10-13 15:34:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:34:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 261. [2020-10-13 15:34:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 396 transitions. [2020-10-13 15:34:20,224 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 396 transitions. Word has length 104 [2020-10-13 15:34:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:20,225 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 396 transitions. [2020-10-13 15:34:20,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:20,225 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 396 transitions. [2020-10-13 15:34:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:34:20,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:20,226 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:20,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:34:20,227 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:20,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:20,227 INFO L82 PathProgramCache]: Analyzing trace with hash 702320387, now seen corresponding path program 1 times [2020-10-13 15:34:20,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:20,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748888003] [2020-10-13 15:34:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:20,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:20,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:20,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:20,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:34:20,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:20,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-13 15:34:20,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:34:20,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:20,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:20,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:20,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:20,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:20,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:20,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748888003] [2020-10-13 15:34:20,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:20,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:20,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422631369] [2020-10-13 15:34:20,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:20,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:20,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:20,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:20,895 INFO L87 Difference]: Start difference. First operand 261 states and 396 transitions. Second operand 5 states. [2020-10-13 15:34:21,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:21,544 INFO L93 Difference]: Finished difference Result 519 states and 792 transitions. [2020-10-13 15:34:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:21,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:34:21,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:21,546 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:34:21,546 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:34:21,547 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 [2020-10-13 15:34:21,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:34:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:34:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 395 transitions. [2020-10-13 15:34:21,555 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 395 transitions. Word has length 104 [2020-10-13 15:34:21,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:21,556 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 395 transitions. [2020-10-13 15:34:21,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:21,556 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 395 transitions. [2020-10-13 15:34:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:34:21,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:21,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:21,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:34:21,558 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:21,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:21,558 INFO L82 PathProgramCache]: Analyzing trace with hash -508829510, now seen corresponding path program 1 times [2020-10-13 15:34:21,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:21,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926040172] [2020-10-13 15:34:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:26,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:26,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:26,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:34:26,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:34:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:34:26,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:26,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:26,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:34:26,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:26,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:26,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:26,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:26,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:26,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:26,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:26,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926040172] [2020-10-13 15:34:26,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:26,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:26,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404741647] [2020-10-13 15:34:26,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:26,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:26,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:26,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:26,644 INFO L87 Difference]: Start difference. First operand 261 states and 395 transitions. Second operand 5 states. [2020-10-13 15:34:27,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:27,389 INFO L93 Difference]: Finished difference Result 545 states and 825 transitions. [2020-10-13 15:34:27,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:27,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:34:27,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:27,392 INFO L225 Difference]: With dead ends: 545 [2020-10-13 15:34:27,392 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:34:27,393 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 [2020-10-13 15:34:27,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:34:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 261. [2020-10-13 15:34:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2020-10-13 15:34:27,401 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 105 [2020-10-13 15:34:27,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:27,401 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2020-10-13 15:34:27,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:27,401 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2020-10-13 15:34:27,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:34:27,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:27,403 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:27,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:34:27,403 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:27,403 INFO L82 PathProgramCache]: Analyzing trace with hash -300299354, now seen corresponding path program 1 times [2020-10-13 15:34:27,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:27,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946703874] [2020-10-13 15:34:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:27,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:27,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:32,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:32,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:34:32,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:32,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:34:32,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:32,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:32,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:34:32,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:32,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:32,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:32,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:32,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:32,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:32,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946703874] [2020-10-13 15:34:32,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:32,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:32,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851288977] [2020-10-13 15:34:32,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:32,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:32,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:32,496 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand 5 states. [2020-10-13 15:34:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:33,243 INFO L93 Difference]: Finished difference Result 545 states and 823 transitions. [2020-10-13 15:34:33,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:33,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:34:33,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:33,246 INFO L225 Difference]: With dead ends: 545 [2020-10-13 15:34:33,246 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:34:33,247 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 [2020-10-13 15:34:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:34:33,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 261. [2020-10-13 15:34:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:33,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 393 transitions. [2020-10-13 15:34:33,255 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 393 transitions. Word has length 105 [2020-10-13 15:34:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:33,255 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 393 transitions. [2020-10-13 15:34:33,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 393 transitions. [2020-10-13 15:34:33,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:34:33,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:33,257 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:33,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:34:33,257 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:33,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:33,257 INFO L82 PathProgramCache]: Analyzing trace with hash -75100424, now seen corresponding path program 1 times [2020-10-13 15:34:33,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:33,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051311126] [2020-10-13 15:34:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:34,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:38,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:38,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:34:38,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:34:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:34:38,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:34:38,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:38,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:38,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:38,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:38,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:38,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:38,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:34:38,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:34:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:38,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051311126] [2020-10-13 15:34:38,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:38,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:38,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739921803] [2020-10-13 15:34:38,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:38,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:38,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:38,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:38,354 INFO L87 Difference]: Start difference. First operand 261 states and 393 transitions. Second operand 5 states. [2020-10-13 15:34:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:38,979 INFO L93 Difference]: Finished difference Result 518 states and 785 transitions. [2020-10-13 15:34:38,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:38,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:34:38,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:38,981 INFO L225 Difference]: With dead ends: 518 [2020-10-13 15:34:38,981 INFO L226 Difference]: Without dead ends: 282 [2020-10-13 15:34:38,982 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 [2020-10-13 15:34:38,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-13 15:34:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 261. [2020-10-13 15:34:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 392 transitions. [2020-10-13 15:34:38,989 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 392 transitions. Word has length 105 [2020-10-13 15:34:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:38,989 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 392 transitions. [2020-10-13 15:34:38,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 392 transitions. [2020-10-13 15:34:38,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:34:38,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:38,991 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:38,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:34:38,991 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:38,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:38,991 INFO L82 PathProgramCache]: Analyzing trace with hash 133429732, now seen corresponding path program 1 times [2020-10-13 15:34:38,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:38,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475898109] [2020-10-13 15:34:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:41,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:41,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:44,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:44,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:34:44,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:44,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:34:44,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:34:44,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:44,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:44,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:44,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:44,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:44,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475898109] [2020-10-13 15:34:44,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:44,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:44,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001469874] [2020-10-13 15:34:44,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:44,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:44,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:44,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:44,069 INFO L87 Difference]: Start difference. First operand 261 states and 392 transitions. Second operand 5 states. [2020-10-13 15:34:44,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:44,708 INFO L93 Difference]: Finished difference Result 518 states and 783 transitions. [2020-10-13 15:34:44,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:44,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:34:44,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:44,711 INFO L225 Difference]: With dead ends: 518 [2020-10-13 15:34:44,711 INFO L226 Difference]: Without dead ends: 282 [2020-10-13 15:34:44,712 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 [2020-10-13 15:34:44,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-13 15:34:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 261. [2020-10-13 15:34:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 391 transitions. [2020-10-13 15:34:44,719 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 391 transitions. Word has length 105 [2020-10-13 15:34:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:44,719 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 391 transitions. [2020-10-13 15:34:44,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 391 transitions. [2020-10-13 15:34:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:34:44,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:44,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:44,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:34:44,721 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:44,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:44,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1935913541, now seen corresponding path program 1 times [2020-10-13 15:34:44,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:44,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344216503] [2020-10-13 15:34:44,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:44,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:44,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:44,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:44,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:49,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:34:49,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:49,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:34:49,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:34:49,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:49,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:49,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:49,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:49,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344216503] [2020-10-13 15:34:49,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:49,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:49,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998956417] [2020-10-13 15:34:49,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:49,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:49,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:49,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:49,819 INFO L87 Difference]: Start difference. First operand 261 states and 391 transitions. Second operand 5 states. [2020-10-13 15:34:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:50,595 INFO L93 Difference]: Finished difference Result 545 states and 817 transitions. [2020-10-13 15:34:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:50,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:34:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:50,597 INFO L225 Difference]: With dead ends: 545 [2020-10-13 15:34:50,597 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:34:50,598 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 [2020-10-13 15:34:50,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:34:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 261. [2020-10-13 15:34:50,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 390 transitions. [2020-10-13 15:34:50,606 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 390 transitions. Word has length 106 [2020-10-13 15:34:50,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:50,606 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 390 transitions. [2020-10-13 15:34:50,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:50,606 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 390 transitions. [2020-10-13 15:34:50,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:34:50,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:50,608 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:50,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:34:50,608 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:50,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:50,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1375213763, now seen corresponding path program 1 times [2020-10-13 15:34:50,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:50,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543785227] [2020-10-13 15:34:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:50,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:55,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:34:55,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:34:55,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:34:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:55,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:55,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:55,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:55,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:55,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:55,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543785227] [2020-10-13 15:34:55,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:55,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:55,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156896773] [2020-10-13 15:34:55,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:55,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:55,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:55,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:55,701 INFO L87 Difference]: Start difference. First operand 261 states and 390 transitions. Second operand 5 states. [2020-10-13 15:34:56,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:56,355 INFO L93 Difference]: Finished difference Result 518 states and 779 transitions. [2020-10-13 15:34:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:56,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:34:56,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:56,358 INFO L225 Difference]: With dead ends: 518 [2020-10-13 15:34:56,358 INFO L226 Difference]: Without dead ends: 282 [2020-10-13 15:34:56,359 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 [2020-10-13 15:34:56,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-13 15:34:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 261. [2020-10-13 15:34:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 389 transitions. [2020-10-13 15:34:56,367 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 389 transitions. Word has length 106 [2020-10-13 15:34:56,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:56,367 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 389 transitions. [2020-10-13 15:34:56,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 389 transitions. [2020-10-13 15:34:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:34:56,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:56,369 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:56,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:34:56,369 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:56,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1991920865, now seen corresponding path program 1 times [2020-10-13 15:34:56,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:56,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391989871] [2020-10-13 15:34:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:01,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:35:01,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:35:01,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:35:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:01,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:01,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:01,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:01,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:01,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:01,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:01,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391989871] [2020-10-13 15:35:01,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:01,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:01,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909473709] [2020-10-13 15:35:01,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:01,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:01,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:01,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:01,460 INFO L87 Difference]: Start difference. First operand 261 states and 389 transitions. Second operand 5 states. [2020-10-13 15:35:02,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:02,264 INFO L93 Difference]: Finished difference Result 545 states and 813 transitions. [2020-10-13 15:35:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:02,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:35:02,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:02,266 INFO L225 Difference]: With dead ends: 545 [2020-10-13 15:35:02,267 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:35:02,268 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 [2020-10-13 15:35:02,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:35:02,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 261. [2020-10-13 15:35:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:35:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 388 transitions. [2020-10-13 15:35:02,275 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 388 transitions. Word has length 107 [2020-10-13 15:35:02,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:02,276 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 388 transitions. [2020-10-13 15:35:02,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:02,276 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 388 transitions. [2020-10-13 15:35:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:35:02,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:02,277 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:02,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:35:02,278 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash -2101222497, now seen corresponding path program 1 times [2020-10-13 15:35:02,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:02,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143206303] [2020-10-13 15:35:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:06,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:07,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:07,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:35:07,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:07,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:35:07,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:07,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:07,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:07,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:35:07,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:07,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:07,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:07,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:07,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:07,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:07,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:07,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:07,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:07,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143206303] [2020-10-13 15:35:07,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:07,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:07,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121049452] [2020-10-13 15:35:07,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:07,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:07,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:07,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:07,380 INFO L87 Difference]: Start difference. First operand 261 states and 388 transitions. Second operand 5 states. [2020-10-13 15:35:08,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:08,039 INFO L93 Difference]: Finished difference Result 518 states and 775 transitions. [2020-10-13 15:35:08,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:08,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:35:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:08,041 INFO L225 Difference]: With dead ends: 518 [2020-10-13 15:35:08,042 INFO L226 Difference]: Without dead ends: 282 [2020-10-13 15:35:08,042 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 [2020-10-13 15:35:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-13 15:35:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 261. [2020-10-13 15:35:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:35:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 387 transitions. [2020-10-13 15:35:08,051 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 387 transitions. Word has length 107 [2020-10-13 15:35:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:08,051 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 387 transitions. [2020-10-13 15:35:08,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 387 transitions. [2020-10-13 15:35:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:35:08,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:08,052 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:08,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:35:08,053 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:08,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2001964778, now seen corresponding path program 1 times [2020-10-13 15:35:08,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:08,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760205395] [2020-10-13 15:35:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:08,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:13,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:13,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:35:13,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:13,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 15:35:13,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:35:13,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:13,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:13,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:13,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:13,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:13,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:13,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:13,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:13,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:13,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760205395] [2020-10-13 15:35:13,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:13,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:13,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533724934] [2020-10-13 15:35:13,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:13,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:13,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:13,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:13,222 INFO L87 Difference]: Start difference. First operand 261 states and 387 transitions. Second operand 5 states. [2020-10-13 15:35:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:14,337 INFO L93 Difference]: Finished difference Result 535 states and 797 transitions. [2020-10-13 15:35:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:14,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:35:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:14,340 INFO L225 Difference]: With dead ends: 535 [2020-10-13 15:35:14,341 INFO L226 Difference]: Without dead ends: 299 [2020-10-13 15:35:14,342 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 [2020-10-13 15:35:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-13 15:35:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 261. [2020-10-13 15:35:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:35:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 386 transitions. [2020-10-13 15:35:14,353 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 386 transitions. Word has length 108 [2020-10-13 15:35:14,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:14,353 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 386 transitions. [2020-10-13 15:35:14,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:14,354 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 386 transitions. [2020-10-13 15:35:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:35:14,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:14,356 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:14,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:35:14,356 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:14,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:14,357 INFO L82 PathProgramCache]: Analyzing trace with hash -40390120, now seen corresponding path program 1 times [2020-10-13 15:35:14,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:14,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341718145] [2020-10-13 15:35:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:14,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:19,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:19,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:35:19,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:35:19,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:35:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:19,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:19,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:19,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:19,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:19,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:19,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:19,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:19,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:19,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:19,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:19,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341718145] [2020-10-13 15:35:19,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:19,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:19,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134108418] [2020-10-13 15:35:19,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:19,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:19,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:19,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:19,474 INFO L87 Difference]: Start difference. First operand 261 states and 386 transitions. Second operand 5 states. [2020-10-13 15:35:20,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:20,070 INFO L93 Difference]: Finished difference Result 508 states and 759 transitions. [2020-10-13 15:35:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:20,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:35:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:20,076 INFO L225 Difference]: With dead ends: 508 [2020-10-13 15:35:20,076 INFO L226 Difference]: Without dead ends: 272 [2020-10-13 15:35:20,077 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 [2020-10-13 15:35:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-13 15:35:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 261. [2020-10-13 15:35:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:35:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 385 transitions. [2020-10-13 15:35:20,084 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 385 transitions. Word has length 108 [2020-10-13 15:35:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:20,084 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 385 transitions. [2020-10-13 15:35:20,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 385 transitions. [2020-10-13 15:35:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:35:20,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:20,086 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:20,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:35:20,086 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:20,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1342862660, now seen corresponding path program 1 times [2020-10-13 15:35:20,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:20,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483253883] [2020-10-13 15:35:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:21,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:21,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:35:21,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:21,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1546 [2020-10-13 15:35:21,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:35:21,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:21,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:21,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:21,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:21,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:21,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:21,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:21,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:21,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:21,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483253883] [2020-10-13 15:35:21,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:21,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:21,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309070881] [2020-10-13 15:35:21,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:21,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:21,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:21,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:21,729 INFO L87 Difference]: Start difference. First operand 261 states and 385 transitions. Second operand 5 states. [2020-10-13 15:35:22,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:22,456 INFO L93 Difference]: Finished difference Result 535 states and 793 transitions. [2020-10-13 15:35:22,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:22,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:35:22,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:22,459 INFO L225 Difference]: With dead ends: 535 [2020-10-13 15:35:22,459 INFO L226 Difference]: Without dead ends: 299 [2020-10-13 15:35:22,460 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 [2020-10-13 15:35:22,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-13 15:35:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 261. [2020-10-13 15:35:22,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:35:22,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 384 transitions. [2020-10-13 15:35:22,466 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 384 transitions. Word has length 112 [2020-10-13 15:35:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:22,467 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 384 transitions. [2020-10-13 15:35:22,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 384 transitions. [2020-10-13 15:35:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:35:22,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:22,468 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:22,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:35:22,468 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:22,469 INFO L82 PathProgramCache]: Analyzing trace with hash -343317178, now seen corresponding path program 1 times [2020-10-13 15:35:22,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:22,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325807300] [2020-10-13 15:35:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:22,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:22,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:35:22,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-13 15:35:22,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:35:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:23,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:23,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:23,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:23,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:23,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:23,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325807300] [2020-10-13 15:35:23,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:23,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:23,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303535750] [2020-10-13 15:35:23,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:23,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:23,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:23,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:23,045 INFO L87 Difference]: Start difference. First operand 261 states and 384 transitions. Second operand 5 states. [2020-10-13 15:35:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:23,663 INFO L93 Difference]: Finished difference Result 550 states and 821 transitions. [2020-10-13 15:35:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:23,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:35:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:23,666 INFO L225 Difference]: With dead ends: 550 [2020-10-13 15:35:23,666 INFO L226 Difference]: Without dead ends: 314 [2020-10-13 15:35:23,667 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 [2020-10-13 15:35:23,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-13 15:35:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 287. [2020-10-13 15:35:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:35:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 430 transitions. [2020-10-13 15:35:23,674 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 430 transitions. Word has length 112 [2020-10-13 15:35:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:23,674 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 430 transitions. [2020-10-13 15:35:23,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 430 transitions. [2020-10-13 15:35:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:35:23,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:23,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:23,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:35:23,676 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:23,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:23,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2007053682, now seen corresponding path program 1 times [2020-10-13 15:35:23,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:23,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817952127] [2020-10-13 15:35:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:23,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:25,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:35:25,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:25,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1559 [2020-10-13 15:35:25,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:35:25,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:25,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:25,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:25,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:25,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:25,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:25,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817952127] [2020-10-13 15:35:25,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:25,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:25,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608929198] [2020-10-13 15:35:25,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:25,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:25,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:25,333 INFO L87 Difference]: Start difference. First operand 287 states and 430 transitions. Second operand 5 states. [2020-10-13 15:35:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:26,058 INFO L93 Difference]: Finished difference Result 587 states and 883 transitions. [2020-10-13 15:35:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:26,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:35:26,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:26,061 INFO L225 Difference]: With dead ends: 587 [2020-10-13 15:35:26,062 INFO L226 Difference]: Without dead ends: 325 [2020-10-13 15:35:26,062 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 [2020-10-13 15:35:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-13 15:35:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 287. [2020-10-13 15:35:26,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:35:26,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 429 transitions. [2020-10-13 15:35:26,069 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 429 transitions. Word has length 115 [2020-10-13 15:35:26,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:26,070 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 429 transitions. [2020-10-13 15:35:26,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 429 transitions. [2020-10-13 15:35:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:35:26,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:26,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:26,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:35:26,072 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:26,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2076356963, now seen corresponding path program 1 times [2020-10-13 15:35:26,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:26,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396217338] [2020-10-13 15:35:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:26,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:26,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:27,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:27,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:35:27,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-10-13 15:35:27,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:35:27,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:27,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:27,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:27,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:27,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:27,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:27,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:27,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396217338] [2020-10-13 15:35:27,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:27,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:27,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139026436] [2020-10-13 15:35:27,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:27,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:27,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:27,266 INFO L87 Difference]: Start difference. First operand 287 states and 429 transitions. Second operand 5 states. [2020-10-13 15:35:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:27,950 INFO L93 Difference]: Finished difference Result 579 states and 868 transitions. [2020-10-13 15:35:27,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:27,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:35:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:27,952 INFO L225 Difference]: With dead ends: 579 [2020-10-13 15:35:27,952 INFO L226 Difference]: Without dead ends: 317 [2020-10-13 15:35:27,953 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 [2020-10-13 15:35:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-13 15:35:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 287. [2020-10-13 15:35:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:35:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 428 transitions. [2020-10-13 15:35:27,960 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 428 transitions. Word has length 116 [2020-10-13 15:35:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:27,960 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 428 transitions. [2020-10-13 15:35:27,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 428 transitions. [2020-10-13 15:35:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:35:27,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:27,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:27,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:35:27,962 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:27,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:27,962 INFO L82 PathProgramCache]: Analyzing trace with hash -342147992, now seen corresponding path program 1 times [2020-10-13 15:35:27,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:27,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911900591] [2020-10-13 15:35:27,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:29,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:35:29,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:29,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-10-13 15:35:29,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:35:29,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:29,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:29,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:29,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:29,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:29,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911900591] [2020-10-13 15:35:29,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:29,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:29,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698703871] [2020-10-13 15:35:29,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:29,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:29,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:29,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:29,310 INFO L87 Difference]: Start difference. First operand 287 states and 428 transitions. Second operand 5 states. [2020-10-13 15:35:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:30,014 INFO L93 Difference]: Finished difference Result 579 states and 866 transitions. [2020-10-13 15:35:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:30,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:35:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:30,016 INFO L225 Difference]: With dead ends: 579 [2020-10-13 15:35:30,016 INFO L226 Difference]: Without dead ends: 317 [2020-10-13 15:35:30,017 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 [2020-10-13 15:35:30,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-13 15:35:30,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 287. [2020-10-13 15:35:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:35:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 427 transitions. [2020-10-13 15:35:30,024 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 427 transitions. Word has length 117 [2020-10-13 15:35:30,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:30,024 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 427 transitions. [2020-10-13 15:35:30,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 427 transitions. [2020-10-13 15:35:30,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:35:30,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:30,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:30,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:35:30,026 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:30,026 INFO L82 PathProgramCache]: Analyzing trace with hash 457436665, now seen corresponding path program 1 times [2020-10-13 15:35:30,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:30,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315043140] [2020-10-13 15:35:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:30,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:31,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:35:31,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:31,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1521 [2020-10-13 15:35:31,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:35:31,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:31,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:31,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:31,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:31,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:31,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:31,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:31,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315043140] [2020-10-13 15:35:31,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:31,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:31,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370336259] [2020-10-13 15:35:31,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:31,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:31,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:31,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:31,643 INFO L87 Difference]: Start difference. First operand 287 states and 427 transitions. Second operand 5 states. [2020-10-13 15:35:32,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:32,339 INFO L93 Difference]: Finished difference Result 579 states and 864 transitions. [2020-10-13 15:35:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:32,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:35:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:32,342 INFO L225 Difference]: With dead ends: 579 [2020-10-13 15:35:32,343 INFO L226 Difference]: Without dead ends: 317 [2020-10-13 15:35:32,343 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 [2020-10-13 15:35:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-13 15:35:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 287. [2020-10-13 15:35:32,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:35:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 426 transitions. [2020-10-13 15:35:32,355 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 426 transitions. Word has length 118 [2020-10-13 15:35:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:32,356 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 426 transitions. [2020-10-13 15:35:32,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 426 transitions. [2020-10-13 15:35:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:35:32,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:32,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:32,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:35:32,360 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1768070493, now seen corresponding path program 1 times [2020-10-13 15:35:32,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:32,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72154344] [2020-10-13 15:35:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:32,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:32,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:33,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:33,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:35:33,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-13 15:35:33,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 15:35:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:35:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:33,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:33,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:33,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:33,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:33,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:33,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:33,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:33,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72154344] [2020-10-13 15:35:33,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:33,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:33,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376453583] [2020-10-13 15:35:33,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:33,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:33,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:33,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:33,734 INFO L87 Difference]: Start difference. First operand 287 states and 426 transitions. Second operand 5 states. [2020-10-13 15:35:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:34,524 INFO L93 Difference]: Finished difference Result 621 states and 936 transitions. [2020-10-13 15:35:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:34,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:35:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:34,528 INFO L225 Difference]: With dead ends: 621 [2020-10-13 15:35:34,528 INFO L226 Difference]: Without dead ends: 359 [2020-10-13 15:35:34,528 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 [2020-10-13 15:35:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-13 15:35:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-10-13 15:35:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:35:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 484 transitions. [2020-10-13 15:35:34,535 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 484 transitions. Word has length 118 [2020-10-13 15:35:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:34,536 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 484 transitions. [2020-10-13 15:35:34,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 484 transitions. [2020-10-13 15:35:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:35:34,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:34,537 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:34,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:35:34,538 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:34,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1167536740, now seen corresponding path program 1 times [2020-10-13 15:35:34,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:34,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059664383] [2020-10-13 15:35:34,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:34,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:34,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:35,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:36,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:35:36,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:36,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-10-13 15:35:36,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:36,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:36,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:36,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:35:36,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:36,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:36,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:36,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:36,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:36,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:36,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:36,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:36,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059664383] [2020-10-13 15:35:36,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:36,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:36,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139967197] [2020-10-13 15:35:36,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:36,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:36,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:36,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:36,105 INFO L87 Difference]: Start difference. First operand 319 states and 484 transitions. Second operand 5 states. [2020-10-13 15:35:36,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:36,800 INFO L93 Difference]: Finished difference Result 641 states and 975 transitions. [2020-10-13 15:35:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:36,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:35:36,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:36,803 INFO L225 Difference]: With dead ends: 641 [2020-10-13 15:35:36,803 INFO L226 Difference]: Without dead ends: 347 [2020-10-13 15:35:36,803 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 [2020-10-13 15:35:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-13 15:35:36,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 319. [2020-10-13 15:35:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:35:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 483 transitions. [2020-10-13 15:35:36,810 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 483 transitions. Word has length 119 [2020-10-13 15:35:36,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:36,811 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 483 transitions. [2020-10-13 15:35:36,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:36,811 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 483 transitions. [2020-10-13 15:35:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:35:36,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:36,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:36,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:35:36,813 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash 660605062, now seen corresponding path program 1 times [2020-10-13 15:35:36,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:36,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857152556] [2020-10-13 15:35:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:37,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:35:37,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-13 15:35:37,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:35:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:37,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:37,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:37,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:37,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:37,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:37,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:37,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857152556] [2020-10-13 15:35:37,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:37,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:37,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391072819] [2020-10-13 15:35:37,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:37,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:37,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:37,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:37,310 INFO L87 Difference]: Start difference. First operand 319 states and 483 transitions. Second operand 5 states. [2020-10-13 15:35:38,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:38,026 INFO L93 Difference]: Finished difference Result 638 states and 969 transitions. [2020-10-13 15:35:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:38,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:35:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:38,028 INFO L225 Difference]: With dead ends: 638 [2020-10-13 15:35:38,028 INFO L226 Difference]: Without dead ends: 344 [2020-10-13 15:35:38,029 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 [2020-10-13 15:35:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-13 15:35:38,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 319. [2020-10-13 15:35:38,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:35:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 482 transitions. [2020-10-13 15:35:38,035 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 482 transitions. Word has length 119 [2020-10-13 15:35:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:38,035 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 482 transitions. [2020-10-13 15:35:38,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 482 transitions. [2020-10-13 15:35:38,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:35:38,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:38,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:38,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:35:38,037 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:38,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:38,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1834113576, now seen corresponding path program 1 times [2020-10-13 15:35:38,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:38,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678393258] [2020-10-13 15:35:38,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:39,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:39,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:35:39,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1328 [2020-10-13 15:35:39,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:35:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:35:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:39,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:39,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:39,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:39,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:39,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:39,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678393258] [2020-10-13 15:35:39,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:39,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:39,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130351451] [2020-10-13 15:35:39,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:39,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:39,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:39,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:39,455 INFO L87 Difference]: Start difference. First operand 319 states and 482 transitions. Second operand 5 states. [2020-10-13 15:35:40,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:40,078 INFO L93 Difference]: Finished difference Result 651 states and 993 transitions. [2020-10-13 15:35:40,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:40,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:35:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:40,082 INFO L225 Difference]: With dead ends: 651 [2020-10-13 15:35:40,082 INFO L226 Difference]: Without dead ends: 357 [2020-10-13 15:35:40,083 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 [2020-10-13 15:35:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-13 15:35:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 340. [2020-10-13 15:35:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 15:35:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 518 transitions. [2020-10-13 15:35:40,089 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 518 transitions. Word has length 121 [2020-10-13 15:35:40,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:40,089 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 518 transitions. [2020-10-13 15:35:40,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 518 transitions. [2020-10-13 15:35:40,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:35:40,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:40,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:40,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:35:40,090 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:40,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:40,091 INFO L82 PathProgramCache]: Analyzing trace with hash -368029229, now seen corresponding path program 1 times [2020-10-13 15:35:40,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:40,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817891212] [2020-10-13 15:35:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:41,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:41,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:35:41,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:41,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1036 [2020-10-13 15:35:41,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:35:41,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:41,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:41,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:41,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:41,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:41,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:41,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:41,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:41,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817891212] [2020-10-13 15:35:41,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:41,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:41,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831380082] [2020-10-13 15:35:41,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:41,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:41,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:41,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:41,215 INFO L87 Difference]: Start difference. First operand 340 states and 518 transitions. Second operand 5 states. [2020-10-13 15:35:41,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:41,890 INFO L93 Difference]: Finished difference Result 680 states and 1039 transitions. [2020-10-13 15:35:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:41,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:35:41,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:41,894 INFO L225 Difference]: With dead ends: 680 [2020-10-13 15:35:41,894 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:35:41,895 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 [2020-10-13 15:35:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:35:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 340. [2020-10-13 15:35:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 15:35:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 517 transitions. [2020-10-13 15:35:41,901 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 517 transitions. Word has length 122 [2020-10-13 15:35:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:41,902 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 517 transitions. [2020-10-13 15:35:41,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 517 transitions. [2020-10-13 15:35:41,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:35:41,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:41,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:41,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:35:41,903 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:41,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1613261779, now seen corresponding path program 1 times [2020-10-13 15:35:41,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:41,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166306727] [2020-10-13 15:35:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:41,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:41,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:42,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:42,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:42,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:35:42,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:42,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-10-13 15:35:42,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:42,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:42,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:42,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:35:42,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:42,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:42,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:42,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:42,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:42,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:42,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:42,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:42,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166306727] [2020-10-13 15:35:42,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:42,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:42,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361819779] [2020-10-13 15:35:42,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:42,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:42,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:42,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:42,999 INFO L87 Difference]: Start difference. First operand 340 states and 517 transitions. Second operand 5 states. [2020-10-13 15:35:43,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:43,677 INFO L93 Difference]: Finished difference Result 680 states and 1037 transitions. [2020-10-13 15:35:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:43,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:35:43,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:43,680 INFO L225 Difference]: With dead ends: 680 [2020-10-13 15:35:43,680 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:35:43,681 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 [2020-10-13 15:35:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:35:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 340. [2020-10-13 15:35:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 15:35:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 516 transitions. [2020-10-13 15:35:43,687 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 516 transitions. Word has length 122 [2020-10-13 15:35:43,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:43,687 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 516 transitions. [2020-10-13 15:35:43,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:43,687 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 516 transitions. [2020-10-13 15:35:43,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:35:43,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:43,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:43,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:35:43,689 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:43,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:43,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1182800871, now seen corresponding path program 1 times [2020-10-13 15:35:43,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:43,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996941612] [2020-10-13 15:35:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:44,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:35:44,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 967 [2020-10-13 15:35:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:35:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:35:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:44,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:44,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:44,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:44,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:44,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996941612] [2020-10-13 15:35:44,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:44,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:44,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915389038] [2020-10-13 15:35:44,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:44,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:44,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:44,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:44,737 INFO L87 Difference]: Start difference. First operand 340 states and 516 transitions. Second operand 5 states. [2020-10-13 15:35:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:45,568 INFO L93 Difference]: Finished difference Result 740 states and 1135 transitions. [2020-10-13 15:35:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:45,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:35:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:45,571 INFO L225 Difference]: With dead ends: 740 [2020-10-13 15:35:45,571 INFO L226 Difference]: Without dead ends: 425 [2020-10-13 15:35:45,571 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 [2020-10-13 15:35:45,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-13 15:35:45,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 377. [2020-10-13 15:35:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-13 15:35:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 584 transitions. [2020-10-13 15:35:45,579 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 584 transitions. Word has length 123 [2020-10-13 15:35:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:45,579 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 584 transitions. [2020-10-13 15:35:45,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 584 transitions. [2020-10-13 15:35:45,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:35:45,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:45,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:45,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:35:45,580 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1873145529, now seen corresponding path program 1 times [2020-10-13 15:35:45,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:45,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982945269] [2020-10-13 15:35:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:46,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:35:46,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:46,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-13 15:35:46,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:35:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:35:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:46,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:46,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:46,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:46,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:46,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:46,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:46,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982945269] [2020-10-13 15:35:46,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:46,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:46,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332811533] [2020-10-13 15:35:46,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:46,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:46,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:46,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:46,799 INFO L87 Difference]: Start difference. First operand 377 states and 584 transitions. Second operand 5 states. [2020-10-13 15:35:47,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:47,630 INFO L93 Difference]: Finished difference Result 810 states and 1265 transitions. [2020-10-13 15:35:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:47,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:35:47,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:47,634 INFO L225 Difference]: With dead ends: 810 [2020-10-13 15:35:47,634 INFO L226 Difference]: Without dead ends: 458 [2020-10-13 15:35:47,635 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 [2020-10-13 15:35:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-13 15:35:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 412. [2020-10-13 15:35:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 648 transitions. [2020-10-13 15:35:47,641 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 648 transitions. Word has length 123 [2020-10-13 15:35:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:47,642 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 648 transitions. [2020-10-13 15:35:47,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 648 transitions. [2020-10-13 15:35:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:35:47,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:47,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:47,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:35:47,644 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:47,644 INFO L82 PathProgramCache]: Analyzing trace with hash -767295858, now seen corresponding path program 1 times [2020-10-13 15:35:47,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:47,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366135694] [2020-10-13 15:35:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:47,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:48,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:48,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:48,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:35:48,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 996 [2020-10-13 15:35:48,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:35:48,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:48,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:48,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:48,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:48,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:48,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:48,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366135694] [2020-10-13 15:35:48,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:48,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:48,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010336954] [2020-10-13 15:35:48,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:48,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:48,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:48,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:48,743 INFO L87 Difference]: Start difference. First operand 412 states and 648 transitions. Second operand 5 states. [2020-10-13 15:35:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:49,415 INFO L93 Difference]: Finished difference Result 824 states and 1299 transitions. [2020-10-13 15:35:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:49,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:35:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:49,419 INFO L225 Difference]: With dead ends: 824 [2020-10-13 15:35:49,419 INFO L226 Difference]: Without dead ends: 437 [2020-10-13 15:35:49,420 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 [2020-10-13 15:35:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-13 15:35:49,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 412. [2020-10-13 15:35:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 647 transitions. [2020-10-13 15:35:49,427 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 647 transitions. Word has length 124 [2020-10-13 15:35:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:49,427 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 647 transitions. [2020-10-13 15:35:49,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 647 transitions. [2020-10-13 15:35:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:35:49,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:49,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:49,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:35:49,428 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:49,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:49,428 INFO L82 PathProgramCache]: Analyzing trace with hash 123754676, now seen corresponding path program 1 times [2020-10-13 15:35:49,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:49,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085300456] [2020-10-13 15:35:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:50,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:50,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:35:50,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-13 15:35:50,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:35:50,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:50,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:50,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:50,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:50,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:50,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:50,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:50,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:50,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085300456] [2020-10-13 15:35:50,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:50,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:50,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354259452] [2020-10-13 15:35:50,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:50,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:50,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:50,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:50,532 INFO L87 Difference]: Start difference. First operand 412 states and 647 transitions. Second operand 5 states. [2020-10-13 15:35:51,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:51,243 INFO L93 Difference]: Finished difference Result 822 states and 1295 transitions. [2020-10-13 15:35:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:51,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:35:51,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:51,247 INFO L225 Difference]: With dead ends: 822 [2020-10-13 15:35:51,247 INFO L226 Difference]: Without dead ends: 435 [2020-10-13 15:35:51,248 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 [2020-10-13 15:35:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-13 15:35:51,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 412. [2020-10-13 15:35:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 646 transitions. [2020-10-13 15:35:51,255 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 646 transitions. Word has length 125 [2020-10-13 15:35:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:51,255 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 646 transitions. [2020-10-13 15:35:51,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 646 transitions. [2020-10-13 15:35:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:35:51,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:51,257 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:51,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:35:51,257 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:51,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:51,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1660500112, now seen corresponding path program 1 times [2020-10-13 15:35:51,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:51,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810446817] [2020-10-13 15:35:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:51,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:35:51,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-13 15:35:51,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:35:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:51,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:51,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:51,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:51,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:51,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:51,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810446817] [2020-10-13 15:35:51,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:51,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:51,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034745765] [2020-10-13 15:35:51,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:51,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:51,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:51,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:51,843 INFO L87 Difference]: Start difference. First operand 412 states and 646 transitions. Second operand 5 states. [2020-10-13 15:35:52,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:52,438 INFO L93 Difference]: Finished difference Result 825 states and 1297 transitions. [2020-10-13 15:35:52,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:52,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:35:52,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:52,442 INFO L225 Difference]: With dead ends: 825 [2020-10-13 15:35:52,442 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 15:35:52,443 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 [2020-10-13 15:35:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 15:35:52,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 412. [2020-10-13 15:35:52,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 645 transitions. [2020-10-13 15:35:52,451 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 645 transitions. Word has length 126 [2020-10-13 15:35:52,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:52,451 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 645 transitions. [2020-10-13 15:35:52,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:52,451 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 645 transitions. [2020-10-13 15:35:52,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:35:52,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:52,452 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:52,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:35:52,452 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:52,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:52,452 INFO L82 PathProgramCache]: Analyzing trace with hash -308091861, now seen corresponding path program 1 times [2020-10-13 15:35:52,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:52,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126271996] [2020-10-13 15:35:52,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:52,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:57,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:35:57,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:35:57,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:35:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:57,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:57,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:57,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:57,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:57,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:57,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:57,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:57,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:57,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126271996] [2020-10-13 15:35:57,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:57,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:57,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169413645] [2020-10-13 15:35:57,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:57,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:57,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:57,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:57,528 INFO L87 Difference]: Start difference. First operand 412 states and 645 transitions. Second operand 5 states. [2020-10-13 15:35:58,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:58,155 INFO L93 Difference]: Finished difference Result 824 states and 1294 transitions. [2020-10-13 15:35:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:58,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 15:35:58,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:58,158 INFO L225 Difference]: With dead ends: 824 [2020-10-13 15:35:58,159 INFO L226 Difference]: Without dead ends: 437 [2020-10-13 15:35:58,159 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 [2020-10-13 15:35:58,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-13 15:35:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 412. [2020-10-13 15:35:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 644 transitions. [2020-10-13 15:35:58,166 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 644 transitions. Word has length 127 [2020-10-13 15:35:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:58,166 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 644 transitions. [2020-10-13 15:35:58,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 644 transitions. [2020-10-13 15:35:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:35:58,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:58,167 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:58,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:35:58,167 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:58,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:58,168 INFO L82 PathProgramCache]: Analyzing trace with hash -99561705, now seen corresponding path program 1 times [2020-10-13 15:35:58,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:58,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779007290] [2020-10-13 15:35:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:58,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:03,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:03,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:36:03,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:36:03,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:36:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:36:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:03,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:03,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:03,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:03,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:03,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:03,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:36:03,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779007290] [2020-10-13 15:36:03,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:03,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:03,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051234029] [2020-10-13 15:36:03,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:03,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:03,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:03,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:03,258 INFO L87 Difference]: Start difference. First operand 412 states and 644 transitions. Second operand 5 states. [2020-10-13 15:36:03,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:03,898 INFO L93 Difference]: Finished difference Result 824 states and 1292 transitions. [2020-10-13 15:36:03,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:03,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 15:36:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:03,902 INFO L225 Difference]: With dead ends: 824 [2020-10-13 15:36:03,902 INFO L226 Difference]: Without dead ends: 437 [2020-10-13 15:36:03,903 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 [2020-10-13 15:36:03,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-13 15:36:03,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 412. [2020-10-13 15:36:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:36:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 643 transitions. [2020-10-13 15:36:03,910 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 643 transitions. Word has length 127 [2020-10-13 15:36:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:03,911 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 643 transitions. [2020-10-13 15:36:03,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 643 transitions. [2020-10-13 15:36:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:36:03,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:03,912 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] [2020-10-13 15:36:03,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:36:03,912 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:03,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:03,913 INFO L82 PathProgramCache]: Analyzing trace with hash -106323067, now seen corresponding path program 1 times [2020-10-13 15:36:03,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:03,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202804321] [2020-10-13 15:36:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:03,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:04,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:04,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:04,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:04,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:36:04,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-13 15:36:04,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:36:04,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:04,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:04,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:04,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:04,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:36:04,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:04,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202804321] [2020-10-13 15:36:04,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:04,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:04,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615959420] [2020-10-13 15:36:04,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:04,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:04,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:04,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:04,677 INFO L87 Difference]: Start difference. First operand 412 states and 643 transitions. Second operand 5 states. [2020-10-13 15:36:05,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:05,370 INFO L93 Difference]: Finished difference Result 822 states and 1287 transitions. [2020-10-13 15:36:05,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:05,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:36:05,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:05,373 INFO L225 Difference]: With dead ends: 822 [2020-10-13 15:36:05,374 INFO L226 Difference]: Without dead ends: 435 [2020-10-13 15:36:05,374 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 [2020-10-13 15:36:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-13 15:36:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 412. [2020-10-13 15:36:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:36:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 642 transitions. [2020-10-13 15:36:05,380 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 642 transitions. Word has length 128 [2020-10-13 15:36:05,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:05,380 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 642 transitions. [2020-10-13 15:36:05,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:05,381 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 642 transitions. [2020-10-13 15:36:05,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:36:05,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:05,382 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:05,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:36:05,382 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:05,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:05,382 INFO L82 PathProgramCache]: Analyzing trace with hash -8013718, now seen corresponding path program 1 times [2020-10-13 15:36:05,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:05,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593271498] [2020-10-13 15:36:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:05,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:05,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:10,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:10,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:36:10,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:10,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:36:10,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:36:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:10,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:10,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:10,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:10,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:10,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:10,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:10,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:10,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:36:10,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593271498] [2020-10-13 15:36:10,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:10,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:10,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996578313] [2020-10-13 15:36:10,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:10,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:10,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:10,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:10,476 INFO L87 Difference]: Start difference. First operand 412 states and 642 transitions. Second operand 5 states. [2020-10-13 15:36:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:11,137 INFO L93 Difference]: Finished difference Result 824 states and 1288 transitions. [2020-10-13 15:36:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:11,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:36:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:11,140 INFO L225 Difference]: With dead ends: 824 [2020-10-13 15:36:11,140 INFO L226 Difference]: Without dead ends: 437 [2020-10-13 15:36:11,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:11,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-13 15:36:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 412. [2020-10-13 15:36:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:36:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 641 transitions. [2020-10-13 15:36:11,147 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 641 transitions. Word has length 128 [2020-10-13 15:36:11,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:11,148 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 641 transitions. [2020-10-13 15:36:11,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:11,148 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 641 transitions. [2020-10-13 15:36:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:36:11,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:11,149 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, 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] [2020-10-13 15:36:11,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:36:11,149 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:11,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:11,149 INFO L82 PathProgramCache]: Analyzing trace with hash 567868939, now seen corresponding path program 1 times [2020-10-13 15:36:11,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:11,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238262571] [2020-10-13 15:36:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:11,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:11,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:11,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:11,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:36:11,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:11,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-13 15:36:11,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:36:11,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:11,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:11,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:11,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:11,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:11,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238262571] [2020-10-13 15:36:11,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:11,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:11,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346206313] [2020-10-13 15:36:11,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:11,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:11,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:11,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:11,989 INFO L87 Difference]: Start difference. First operand 412 states and 641 transitions. Second operand 5 states. [2020-10-13 15:36:12,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:12,673 INFO L93 Difference]: Finished difference Result 819 states and 1279 transitions. [2020-10-13 15:36:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:12,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:36:12,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:12,677 INFO L225 Difference]: With dead ends: 819 [2020-10-13 15:36:12,677 INFO L226 Difference]: Without dead ends: 432 [2020-10-13 15:36:12,678 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 [2020-10-13 15:36:12,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-13 15:36:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 412. [2020-10-13 15:36:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:36:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 640 transitions. [2020-10-13 15:36:12,685 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 640 transitions. Word has length 129 [2020-10-13 15:36:12,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:12,685 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 640 transitions. [2020-10-13 15:36:12,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:12,686 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 640 transitions. [2020-10-13 15:36:12,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:36:12,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:12,687 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:12,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:36:12,687 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:12,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1627273234, now seen corresponding path program 1 times [2020-10-13 15:36:12,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:12,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294719677] [2020-10-13 15:36:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:12,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:17,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:36:17,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:17,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:36:17,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:36:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:17,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:17,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:17,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:17,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:17,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:17,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:17,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:17,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:17,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:17,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:36:17,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294719677] [2020-10-13 15:36:17,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:17,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:17,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866203894] [2020-10-13 15:36:17,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:17,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:17,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:17,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:17,782 INFO L87 Difference]: Start difference. First operand 412 states and 640 transitions. Second operand 5 states. [2020-10-13 15:36:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:18,415 INFO L93 Difference]: Finished difference Result 824 states and 1284 transitions. [2020-10-13 15:36:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:18,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:36:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:18,419 INFO L225 Difference]: With dead ends: 824 [2020-10-13 15:36:18,419 INFO L226 Difference]: Without dead ends: 437 [2020-10-13 15:36:18,420 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 [2020-10-13 15:36:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-13 15:36:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 412. [2020-10-13 15:36:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:36:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 639 transitions. [2020-10-13 15:36:18,426 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 639 transitions. Word has length 129 [2020-10-13 15:36:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:18,426 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 639 transitions. [2020-10-13 15:36:18,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:18,427 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 639 transitions. [2020-10-13 15:36:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:36:18,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:18,428 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:18,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:36:18,428 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:18,428 INFO L82 PathProgramCache]: Analyzing trace with hash -421139451, now seen corresponding path program 1 times [2020-10-13 15:36:18,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:18,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227846542] [2020-10-13 15:36:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:18,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:21,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:23,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:36:23,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:23,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:36:23,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:23,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:23,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:36:23,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:23,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:23,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:23,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:23,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:23,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:23,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:36:23,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227846542] [2020-10-13 15:36:23,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:23,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:23,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115378159] [2020-10-13 15:36:23,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:23,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:23,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:23,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:23,509 INFO L87 Difference]: Start difference. First operand 412 states and 639 transitions. Second operand 5 states. [2020-10-13 15:36:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:24,122 INFO L93 Difference]: Finished difference Result 814 states and 1270 transitions. [2020-10-13 15:36:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:24,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 15:36:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:24,125 INFO L225 Difference]: With dead ends: 814 [2020-10-13 15:36:24,126 INFO L226 Difference]: Without dead ends: 427 [2020-10-13 15:36:24,126 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 [2020-10-13 15:36:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-13 15:36:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 412. [2020-10-13 15:36:24,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:36:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 638 transitions. [2020-10-13 15:36:24,135 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 638 transitions. Word has length 130 [2020-10-13 15:36:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:24,135 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 638 transitions. [2020-10-13 15:36:24,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 638 transitions. [2020-10-13 15:36:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:36:24,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:24,136 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, 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] [2020-10-13 15:36:24,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:36:24,137 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:24,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1582511799, now seen corresponding path program 1 times [2020-10-13 15:36:24,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:24,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828419548] [2020-10-13 15:36:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 15:36:24,179 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 15:36:24,179 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 15:36:24,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:36:24,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 03:36:24 BoogieIcfgContainer [2020-10-13 15:36:24,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 15:36:24,229 INFO L168 Benchmark]: Toolchain (without parser) took 207925.60 ms. Allocated memory was 146.8 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 100.8 MB in the beginning and 444.5 MB in the end (delta: -343.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-10-13 15:36:24,230 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 15:36:24,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 829.48 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 100.6 MB in the beginning and 165.8 MB in the end (delta: -65.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-10-13 15:36:24,230 INFO L168 Benchmark]: Boogie Preprocessor took 168.15 ms. Allocated memory is still 205.5 MB. Free memory was 165.8 MB in the beginning and 158.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 7.1 GB. [2020-10-13 15:36:24,231 INFO L168 Benchmark]: RCFGBuilder took 1196.97 ms. Allocated memory was 205.5 MB in the beginning and 237.5 MB in the end (delta: 32.0 MB). Free memory was 158.0 MB in the beginning and 176.4 MB in the end (delta: -18.4 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. [2020-10-13 15:36:24,231 INFO L168 Benchmark]: TraceAbstraction took 205725.70 ms. Allocated memory was 237.5 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 176.4 MB in the beginning and 444.5 MB in the end (delta: -268.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-10-13 15:36:24,233 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 829.48 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 100.6 MB in the beginning and 165.8 MB in the end (delta: -65.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 168.15 ms. Allocated memory is still 205.5 MB. Free memory was 165.8 MB in the beginning and 158.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1196.97 ms. Allocated memory was 205.5 MB in the beginning and 237.5 MB in the end (delta: 32.0 MB). Free memory was 158.0 MB in the beginning and 176.4 MB in the end (delta: -18.4 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205725.70 ms. Allocated memory was 237.5 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 176.4 MB in the beginning and 444.5 MB in the end (delta: -268.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1702]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1121. Possible FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_server_data ; [L1065] SSL *s ; [L1066] int tmp ; [L1070] s = malloc(sizeof(SSL)) [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 8464 [L1075] CALL ssl3_accept(s) [L1081] BUF_MEM *buf ; [L1082] unsigned long l ; [L1083] unsigned long Time ; [L1084] unsigned long tmp ; [L1085] void (*cb)() ; [L1086] long num1 ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int got_new_session ; [L1092] int tmp___1 = __VERIFIER_nondet_int() ; [L1093] int tmp___2 = __VERIFIER_nondet_int() ; [L1094] int tmp___3 = __VERIFIER_nondet_int() ; [L1095] int tmp___4 = __VERIFIER_nondet_int() ; [L1096] int tmp___5 = __VERIFIER_nondet_int() ; [L1097] int tmp___6 = __VERIFIER_nondet_int() ; [L1098] int tmp___7 ; [L1099] long tmp___8 = __VERIFIER_nondet_long() ; [L1100] int tmp___9 = __VERIFIER_nondet_int() ; [L1101] int tmp___10 = __VERIFIER_nondet_int() ; [L1102] int blastFlag ; [L1106] blastFlag = 0 [L1107] s->hit=__VERIFIER_nondet_int () [L1108] s->state = 8464 [L1109] tmp = __VERIFIER_nondet_int() [L1110] Time = tmp [L1111] cb = (void (*)())((void *)0) [L1112] ret = -1 [L1113] skip = 0 [L1114] got_new_session = 0 [L1115] EXPR s->info_callback [L1115] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1116] EXPR s->info_callback [L1116] cb = s->info_callback [L1120] EXPR s->in_handshake [L1120] s->in_handshake += 1 [L1121] COND FALSE !(tmp___1 & 12288) [L1130] EXPR s->cert [L1130] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND TRUE s->state == 8464 [L1323] s->shutdown = 0 [L1324] ret = __VERIFIER_nondet_int() [L1325] COND TRUE blastFlag == 0 [L1326] blastFlag = 1 [L1330] COND FALSE !(ret <= 0) [L1335] got_new_session = 1 [L1336] s->state = 8496 [L1337] s->init_num = 0 [L1661] EXPR s->s3 [L1661] EXPR (s->s3)->tmp.reuse_message [L1661] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1690] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND TRUE s->state == 8496 [L1341] ret = __VERIFIER_nondet_int() [L1342] COND TRUE blastFlag == 1 [L1343] blastFlag = 2 [L1347] COND FALSE !(ret <= 0) [L1352] s->hit [L1352] COND TRUE s->hit [L1353] s->state = 8656 [L1357] s->init_num = 0 [L1661] EXPR s->s3 [L1661] EXPR (s->s3)->tmp.reuse_message [L1661] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1690] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND FALSE !(s->state == 8496) [L1175] EXPR s->state [L1175] COND FALSE !(s->state == 8497) [L1178] EXPR s->state [L1178] COND FALSE !(s->state == 8512) [L1181] EXPR s->state [L1181] COND FALSE !(s->state == 8513) [L1184] EXPR s->state [L1184] COND FALSE !(s->state == 8528) [L1187] EXPR s->state [L1187] COND FALSE !(s->state == 8529) [L1190] EXPR s->state [L1190] COND FALSE !(s->state == 8544) [L1193] EXPR s->state [L1193] COND FALSE !(s->state == 8545) [L1196] EXPR s->state [L1196] COND FALSE !(s->state == 8560) [L1199] EXPR s->state [L1199] COND FALSE !(s->state == 8561) [L1202] EXPR s->state [L1202] COND FALSE !(s->state == 8448) [L1205] EXPR s->state [L1205] COND FALSE !(s->state == 8576) [L1208] EXPR s->state [L1208] COND FALSE !(s->state == 8577) [L1211] EXPR s->state [L1211] COND FALSE !(s->state == 8592) [L1214] EXPR s->state [L1214] COND FALSE !(s->state == 8593) [L1217] EXPR s->state [L1217] COND FALSE !(s->state == 8608) [L1220] EXPR s->state [L1220] COND FALSE !(s->state == 8609) [L1223] EXPR s->state [L1223] COND FALSE !(s->state == 8640) [L1226] EXPR s->state [L1226] COND FALSE !(s->state == 8641) [L1229] EXPR s->state [L1229] COND TRUE s->state == 8656 [L1550] EXPR s->session [L1550] EXPR s->s3 [L1550] EXPR (s->s3)->tmp.new_cipher [L1550] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1551] COND FALSE !(! tmp___9) [L1557] ret = __VERIFIER_nondet_int() [L1558] COND TRUE blastFlag == 2 [L1559] blastFlag = 4 [L1567] COND FALSE !(ret <= 0) [L1572] s->state = 8672 [L1573] s->init_num = 0 [L1574] COND FALSE !(! tmp___10) [L1661] EXPR s->s3 [L1661] EXPR (s->s3)->tmp.reuse_message [L1661] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1690] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND FALSE !(s->state == 8496) [L1175] EXPR s->state [L1175] COND FALSE !(s->state == 8497) [L1178] EXPR s->state [L1178] COND FALSE !(s->state == 8512) [L1181] EXPR s->state [L1181] COND FALSE !(s->state == 8513) [L1184] EXPR s->state [L1184] COND FALSE !(s->state == 8528) [L1187] EXPR s->state [L1187] COND FALSE !(s->state == 8529) [L1190] EXPR s->state [L1190] COND FALSE !(s->state == 8544) [L1193] EXPR s->state [L1193] COND FALSE !(s->state == 8545) [L1196] EXPR s->state [L1196] COND FALSE !(s->state == 8560) [L1199] EXPR s->state [L1199] COND FALSE !(s->state == 8561) [L1202] EXPR s->state [L1202] COND FALSE !(s->state == 8448) [L1205] EXPR s->state [L1205] COND FALSE !(s->state == 8576) [L1208] EXPR s->state [L1208] COND FALSE !(s->state == 8577) [L1211] EXPR s->state [L1211] COND FALSE !(s->state == 8592) [L1214] EXPR s->state [L1214] COND FALSE !(s->state == 8593) [L1217] EXPR s->state [L1217] COND FALSE !(s->state == 8608) [L1220] EXPR s->state [L1220] COND FALSE !(s->state == 8609) [L1223] EXPR s->state [L1223] COND FALSE !(s->state == 8640) [L1226] EXPR s->state [L1226] COND FALSE !(s->state == 8641) [L1229] EXPR s->state [L1229] COND FALSE !(s->state == 8656) [L1232] EXPR s->state [L1232] COND FALSE !(s->state == 8657) [L1235] EXPR s->state [L1235] COND TRUE s->state == 8672 [L1583] ret = __VERIFIER_nondet_int() [L1584] COND TRUE blastFlag == 4 [L1702] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 180 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 205.6s, OverallIterations: 62, TraceHistogramMax: 5, AutomataDifference: 41.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12021 SDtfs, 3183 SDslu, 18434 SDs, 0 SdLazy, 26708 SolverSat, 667 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 471 GetRequests, 183 SyntacticMatches, 42 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=412occurred in iteration=51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 61 MinimizatonAttempts, 1663 StatesRemovedByMinimization, 61 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 160.7s InterpolantComputationTime, 6304 NumberOfCodeBlocks, 6304 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 6112 ConstructedInterpolants, 0 QuantifiedInterpolants, 2009367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 61 InterpolantComputations, 61 PerfectInterpolantSequences, 3795/3795 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...