/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.01.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:31:50,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:31:50,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:31:50,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:31:50,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:31:50,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:31:50,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:31:50,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:31:50,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:31:50,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:31:50,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:31:50,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:31:50,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:31:50,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:31:50,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:31:50,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:31:50,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:31:50,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:31:50,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:31:50,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:31:50,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:31:50,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:31:50,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:31:50,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:31:50,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:31:50,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:31:50,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:31:50,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:31:50,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:31:50,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:31:50,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:31:50,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:31:50,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:31:50,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:31:50,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:31:50,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:31:50,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:31:50,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:31:50,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:31:50,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:31:50,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:31:50,145 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 15:31:50,167 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:31:50,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:31:50,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:31:50,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:31:50,168 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:31:50,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:31:50,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:31:50,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:31:50,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:31:50,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:31:50,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:31:50,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:31:50,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:31:50,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:31:50,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:31:50,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:31:50,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:31:50,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:31:50,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:31:50,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:31:50,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:31:50,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:31:50,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:31:50,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:31:50,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:31:50,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:31:50,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:31:50,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:31:50,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:31:50,174 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 15:31:50,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:31:50,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:31:50,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:31:50,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:31:50,486 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:31:50,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-2.c [2020-10-13 15:31:50,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5f51f228/c5ebbb3b1b06427a8c106d5ae78991ed/FLAG1f8197dae [2020-10-13 15:31:51,109 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:31:51,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-2.c [2020-10-13 15:31:51,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5f51f228/c5ebbb3b1b06427a8c106d5ae78991ed/FLAG1f8197dae [2020-10-13 15:31:51,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5f51f228/c5ebbb3b1b06427a8c106d5ae78991ed [2020-10-13 15:31:51,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:31:51,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:31:51,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:31:51,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:31:51,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:31:51,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:31:51" (1/1) ... [2020-10-13 15:31:51,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2661f52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51, skipping insertion in model container [2020-10-13 15:31:51,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:31:51" (1/1) ... [2020-10-13 15:31:51,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:31:51,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:31:52,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:31:52,016 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:31:52,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:31:52,215 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:31:52,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:52 WrapperNode [2020-10-13 15:31:52,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:31:52,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:31:52,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:31:52,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:31:52,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:52" (1/1) ... [2020-10-13 15:31:52,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:52" (1/1) ... [2020-10-13 15:31:52,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:52" (1/1) ... [2020-10-13 15:31:52,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:52" (1/1) ... [2020-10-13 15:31:52,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:52" (1/1) ... [2020-10-13 15:31:52,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:52" (1/1) ... [2020-10-13 15:31:52,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:52" (1/1) ... [2020-10-13 15:31:52,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:31:52,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:31:52,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:31:52,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:31:52,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:52" (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 15:31:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:31:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:31:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:31:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:31:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:31:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:31:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:31:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:31:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:31:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:31:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:31:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:31:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:31:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:31:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:31:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:31:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:31:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:31:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:31:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:31:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:31:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:31:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:31:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:31:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:31:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:31:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:31:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:31:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:31:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:31:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:31:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:31:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:31:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:31:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:31:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:31:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:31:52,916 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:31:53,474 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:31:53,475 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:31:53,500 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:31:53,500 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:31:53,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:31:53 BoogieIcfgContainer [2020-10-13 15:31:53,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:31:53,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:31:53,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:31:53,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:31:53,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:31:51" (1/3) ... [2020-10-13 15:31:53,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac0562e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:31:53, skipping insertion in model container [2020-10-13 15:31:53,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:52" (2/3) ... [2020-10-13 15:31:53,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac0562e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:31:53, skipping insertion in model container [2020-10-13 15:31:53,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:31:53" (3/3) ... [2020-10-13 15:31:53,513 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2020-10-13 15:31:53,523 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:31:53,530 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:31:53,544 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:31:53,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:31:53,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:31:53,569 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:31:53,569 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:31:53,569 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:31:53,569 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:31:53,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:31:53,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:31:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-13 15:31:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 15:31:53,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:53,602 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 15:31:53,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:53,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1799616284, now seen corresponding path program 1 times [2020-10-13 15:31:53,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:53,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759390789] [2020-10-13 15:31:53,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:53,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:54,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:54,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:54,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 15:31:54,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-13 15:31:54,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:54,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:54,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:31:54,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:31:54,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:31:55,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:55,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:55,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:55,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:31:55,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:55,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:55,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:55,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:31:55,040 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 15:31:55,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759390789] [2020-10-13 15:31:55,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:55,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:55,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414717930] [2020-10-13 15:31:55,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:55,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:55,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:55,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:55,070 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 5 states. [2020-10-13 15:31:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:55,896 INFO L93 Difference]: Finished difference Result 327 states and 541 transitions. [2020-10-13 15:31:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:55,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-13 15:31:55,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:55,911 INFO L225 Difference]: With dead ends: 327 [2020-10-13 15:31:55,911 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 15:31:55,916 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 15:31:55,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 15:31:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2020-10-13 15:31:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:31:55,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 225 transitions. [2020-10-13 15:31:55,970 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 225 transitions. Word has length 51 [2020-10-13 15:31:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:55,970 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 225 transitions. [2020-10-13 15:31:55,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 225 transitions. [2020-10-13 15:31:55,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:31:55,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:55,977 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 15:31:55,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:31:55,978 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:55,979 INFO L82 PathProgramCache]: Analyzing trace with hash 498365255, now seen corresponding path program 1 times [2020-10-13 15:31:55,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:55,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626571197] [2020-10-13 15:31:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:56,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:57,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:57,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:31:57,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:31:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-13 15:31:57,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:31:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:31:57,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:31:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:57,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:57,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:57,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:57,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:57,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:31:57,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:31:57,307 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 15:31:57,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626571197] [2020-10-13 15:31:57,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:57,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:57,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734226594] [2020-10-13 15:31:57,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:57,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:57,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:57,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:57,331 INFO L87 Difference]: Start difference. First operand 149 states and 225 transitions. Second operand 5 states. [2020-10-13 15:31:58,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:58,141 INFO L93 Difference]: Finished difference Result 290 states and 435 transitions. [2020-10-13 15:31:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:58,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:31:58,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:58,144 INFO L225 Difference]: With dead ends: 290 [2020-10-13 15:31:58,144 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 15:31:58,148 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 15:31:58,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 15:31:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2020-10-13 15:31:58,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:31:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2020-10-13 15:31:58,170 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 64 [2020-10-13 15:31:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:58,171 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2020-10-13 15:31:58,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2020-10-13 15:31:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:31:58,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:58,180 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 15:31:58,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:31:58,181 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:58,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:58,181 INFO L82 PathProgramCache]: Analyzing trace with hash -42187856, now seen corresponding path program 1 times [2020-10-13 15:31:58,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:58,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562355872] [2020-10-13 15:31:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:58,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:59,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:59,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:31:59,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:31:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1330 [2020-10-13 15:31:59,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:31:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:31:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:31:59,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:59,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:59,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:59,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:59,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:59,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:31:59,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:59,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:31:59,652 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 15:31:59,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562355872] [2020-10-13 15:31:59,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:59,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:59,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702243377] [2020-10-13 15:31:59,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:59,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:59,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:59,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:59,655 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand 5 states. [2020-10-13 15:32:00,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:00,297 INFO L93 Difference]: Finished difference Result 288 states and 432 transitions. [2020-10-13 15:32:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:00,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:32:00,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:00,301 INFO L225 Difference]: With dead ends: 288 [2020-10-13 15:32:00,301 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 15:32:00,304 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 15:32:00,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 15:32:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 149. [2020-10-13 15:32:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:32:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 223 transitions. [2020-10-13 15:32:00,323 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 223 transitions. Word has length 65 [2020-10-13 15:32:00,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:00,324 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 223 transitions. [2020-10-13 15:32:00,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:00,324 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 223 transitions. [2020-10-13 15:32:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:32:00,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:00,326 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 15:32:00,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:32:00,328 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:00,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1336322891, now seen corresponding path program 1 times [2020-10-13 15:32:00,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:00,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925765104] [2020-10-13 15:32:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:00,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:00,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:00,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:00,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:32:00,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:00,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-13 15:32:00,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:00,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:00,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:00,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:32:00,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:32:00,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:00,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:00,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:00,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:32:00,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:00,997 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 15:32:00,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925765104] [2020-10-13 15:32:00,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:00,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:00,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296926668] [2020-10-13 15:32:01,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:01,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:01,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:01,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:01,001 INFO L87 Difference]: Start difference. First operand 149 states and 223 transitions. Second operand 5 states. [2020-10-13 15:32:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:01,638 INFO L93 Difference]: Finished difference Result 287 states and 430 transitions. [2020-10-13 15:32:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:01,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:32:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:01,641 INFO L225 Difference]: With dead ends: 287 [2020-10-13 15:32:01,643 INFO L226 Difference]: Without dead ends: 163 [2020-10-13 15:32:01,644 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 15:32:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-13 15:32:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 149. [2020-10-13 15:32:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:32:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 222 transitions. [2020-10-13 15:32:01,666 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 222 transitions. Word has length 65 [2020-10-13 15:32:01,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:01,666 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 222 transitions. [2020-10-13 15:32:01,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 222 transitions. [2020-10-13 15:32:01,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:32:01,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:01,671 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, 1] [2020-10-13 15:32:01,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:32:01,672 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:01,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:01,673 INFO L82 PathProgramCache]: Analyzing trace with hash -344721739, now seen corresponding path program 1 times [2020-10-13 15:32:01,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:01,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686033058] [2020-10-13 15:32:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:01,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:01,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:06,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:06,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:32:06,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:06,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4700 [2020-10-13 15:32:06,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:32:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:06,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:06,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:06,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:06,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:06,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:06,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:32:06,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:06,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:06,495 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 15:32:06,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686033058] [2020-10-13 15:32:06,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:06,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:06,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769677970] [2020-10-13 15:32:06,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:06,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:06,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:06,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:06,499 INFO L87 Difference]: Start difference. First operand 149 states and 222 transitions. Second operand 5 states. [2020-10-13 15:32:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:07,072 INFO L93 Difference]: Finished difference Result 286 states and 428 transitions. [2020-10-13 15:32:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:07,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:32:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:07,074 INFO L225 Difference]: With dead ends: 286 [2020-10-13 15:32:07,074 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 15:32:07,075 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 15:32:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 15:32:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 149. [2020-10-13 15:32:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:32:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 221 transitions. [2020-10-13 15:32:07,089 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 221 transitions. Word has length 66 [2020-10-13 15:32:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:07,089 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 221 transitions. [2020-10-13 15:32:07,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 221 transitions. [2020-10-13 15:32:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:32:07,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:07,091 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 15:32:07,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:32:07,094 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:07,094 INFO L82 PathProgramCache]: Analyzing trace with hash -136191583, now seen corresponding path program 1 times [2020-10-13 15:32:07,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:07,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904619984] [2020-10-13 15:32:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:07,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:08,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:08,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:10,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:12,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:12,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:32:12,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:32:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:32:12,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:32:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:12,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:12,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:12,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:12,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:12,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:12,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:12,200 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 15:32:12,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904619984] [2020-10-13 15:32:12,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:12,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:12,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265363468] [2020-10-13 15:32:12,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:12,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:12,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:12,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:12,202 INFO L87 Difference]: Start difference. First operand 149 states and 221 transitions. Second operand 5 states. [2020-10-13 15:32:12,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:12,915 INFO L93 Difference]: Finished difference Result 286 states and 427 transitions. [2020-10-13 15:32:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:12,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:32:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:12,916 INFO L225 Difference]: With dead ends: 286 [2020-10-13 15:32:12,917 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 15:32:12,917 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 15:32:12,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 15:32:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 149. [2020-10-13 15:32:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:32:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 220 transitions. [2020-10-13 15:32:12,923 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 220 transitions. Word has length 66 [2020-10-13 15:32:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:12,923 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 220 transitions. [2020-10-13 15:32:12,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 220 transitions. [2020-10-13 15:32:12,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:32:12,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:12,925 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 15:32:12,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:32:12,925 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:12,925 INFO L82 PathProgramCache]: Analyzing trace with hash -73822966, now seen corresponding path program 1 times [2020-10-13 15:32:12,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:12,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172832363] [2020-10-13 15:32:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:12,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:12,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:14,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:17,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:17,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 15:32:17,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:17,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:32:17,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:32:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:32:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:32:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:18,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:18,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:18,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:18,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:18,033 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 15:32:18,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172832363] [2020-10-13 15:32:18,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:18,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:32:18,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2267394] [2020-10-13 15:32:18,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:32:18,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:18,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:32:18,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:18,035 INFO L87 Difference]: Start difference. First operand 149 states and 220 transitions. Second operand 6 states. [2020-10-13 15:32:19,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:19,496 INFO L93 Difference]: Finished difference Result 390 states and 589 transitions. [2020-10-13 15:32:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:32:19,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-13 15:32:19,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:19,500 INFO L225 Difference]: With dead ends: 390 [2020-10-13 15:32:19,500 INFO L226 Difference]: Without dead ends: 266 [2020-10-13 15:32:19,501 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 15:32:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-13 15:32:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 175. [2020-10-13 15:32:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-13 15:32:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 258 transitions. [2020-10-13 15:32:19,511 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 258 transitions. Word has length 67 [2020-10-13 15:32:19,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:19,512 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 258 transitions. [2020-10-13 15:32:19,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:32:19,513 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 258 transitions. [2020-10-13 15:32:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 15:32:19,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:19,518 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, 1] [2020-10-13 15:32:19,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:32:19,518 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:19,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1205907881, now seen corresponding path program 1 times [2020-10-13 15:32:19,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:19,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669982126] [2020-10-13 15:32:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:19,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:22,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:23,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:23,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 15:32:23,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4356 [2020-10-13 15:32:23,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:32:23,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:23,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:23,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:23,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:23,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:23,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:23,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:23,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:23,965 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 15:32:23,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669982126] [2020-10-13 15:32:23,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:23,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:23,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001893735] [2020-10-13 15:32:23,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:23,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:23,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:23,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:23,968 INFO L87 Difference]: Start difference. First operand 175 states and 258 transitions. Second operand 5 states. [2020-10-13 15:32:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:24,718 INFO L93 Difference]: Finished difference Result 338 states and 502 transitions. [2020-10-13 15:32:24,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:24,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-13 15:32:24,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:24,721 INFO L225 Difference]: With dead ends: 338 [2020-10-13 15:32:24,721 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 15:32:24,722 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 15:32:24,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 15:32:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2020-10-13 15:32:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-13 15:32:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 257 transitions. [2020-10-13 15:32:24,737 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 257 transitions. Word has length 68 [2020-10-13 15:32:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:24,739 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 257 transitions. [2020-10-13 15:32:24,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 257 transitions. [2020-10-13 15:32:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 15:32:24,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:24,741 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 15:32:24,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:32:24,742 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:24,742 INFO L82 PathProgramCache]: Analyzing trace with hash 656903516, now seen corresponding path program 1 times [2020-10-13 15:32:24,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:24,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532821812] [2020-10-13 15:32:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:24,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:24,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:24,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:24,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:25,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:29,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:29,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 15:32:29,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:32:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:32:29,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:32:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:32:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:32:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:29,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:29,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:29,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:29,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:29,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:29,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:29,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:29,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:29,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:29,873 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 15:32:29,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532821812] [2020-10-13 15:32:29,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:29,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:32:29,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100288787] [2020-10-13 15:32:29,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:32:29,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:29,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:32:29,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:29,875 INFO L87 Difference]: Start difference. First operand 175 states and 257 transitions. Second operand 6 states. [2020-10-13 15:32:30,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:30,767 INFO L93 Difference]: Finished difference Result 450 states and 674 transitions. [2020-10-13 15:32:30,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:32:30,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 15:32:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:30,772 INFO L225 Difference]: With dead ends: 450 [2020-10-13 15:32:30,772 INFO L226 Difference]: Without dead ends: 300 [2020-10-13 15:32:30,773 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 15:32:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-13 15:32:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 174. [2020-10-13 15:32:30,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 15:32:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 256 transitions. [2020-10-13 15:32:30,786 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 256 transitions. Word has length 68 [2020-10-13 15:32:30,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:30,787 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 256 transitions. [2020-10-13 15:32:30,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:32:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 256 transitions. [2020-10-13 15:32:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 15:32:30,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:30,790 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 15:32:30,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:32:30,791 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:30,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:30,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1537343906, now seen corresponding path program 1 times [2020-10-13 15:32:30,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:30,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941181795] [2020-10-13 15:32:30,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:30,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:30,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:31,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 15:32:31,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 15:32:31,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:32:31,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:31,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:31,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:31,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:31,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:31,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:31,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:31,118 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 15:32:31,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941181795] [2020-10-13 15:32:31,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:31,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:31,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066043548] [2020-10-13 15:32:31,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:31,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:31,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:31,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:31,120 INFO L87 Difference]: Start difference. First operand 174 states and 256 transitions. Second operand 5 states. [2020-10-13 15:32:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:31,686 INFO L93 Difference]: Finished difference Result 366 states and 547 transitions. [2020-10-13 15:32:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:31,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-13 15:32:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:31,689 INFO L225 Difference]: With dead ends: 366 [2020-10-13 15:32:31,689 INFO L226 Difference]: Without dead ends: 217 [2020-10-13 15:32:31,690 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 15:32:31,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-13 15:32:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2020-10-13 15:32:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 294 transitions. [2020-10-13 15:32:31,697 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 294 transitions. Word has length 68 [2020-10-13 15:32:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:31,698 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 294 transitions. [2020-10-13 15:32:31,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 294 transitions. [2020-10-13 15:32:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 15:32:31,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:31,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:31,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:32:31,700 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:31,700 INFO L82 PathProgramCache]: Analyzing trace with hash -28223419, now seen corresponding path program 1 times [2020-10-13 15:32:31,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:31,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70816009] [2020-10-13 15:32:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:31,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:34,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:34,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 15:32:34,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2484 [2020-10-13 15:32:34,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:32:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:34,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:34,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:34,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:34,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:34,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:34,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:34,253 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 15:32:34,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70816009] [2020-10-13 15:32:34,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:34,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:34,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583360404] [2020-10-13 15:32:34,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:34,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:34,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:34,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:34,256 INFO L87 Difference]: Start difference. First operand 196 states and 294 transitions. Second operand 5 states. [2020-10-13 15:32:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:34,790 INFO L93 Difference]: Finished difference Result 380 states and 574 transitions. [2020-10-13 15:32:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:34,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-13 15:32:34,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:34,792 INFO L225 Difference]: With dead ends: 380 [2020-10-13 15:32:34,792 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 15:32:34,793 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 15:32:34,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 15:32:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 196. [2020-10-13 15:32:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 293 transitions. [2020-10-13 15:32:34,801 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 293 transitions. Word has length 69 [2020-10-13 15:32:34,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:34,802 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 293 transitions. [2020-10-13 15:32:34,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:34,802 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 293 transitions. [2020-10-13 15:32:34,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 15:32:34,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:34,803 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, 1] [2020-10-13 15:32:34,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:32:34,803 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:34,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:34,804 INFO L82 PathProgramCache]: Analyzing trace with hash -803725092, now seen corresponding path program 1 times [2020-10-13 15:32:34,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:34,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222634410] [2020-10-13 15:32:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:34,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:34,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:35,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:37,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:37,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 15:32:37,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2263 [2020-10-13 15:32:37,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:32:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:37,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:37,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:37,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:37,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:37,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:37,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:37,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:37,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:37,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:32:37,170 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 15:32:37,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222634410] [2020-10-13 15:32:37,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:37,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:37,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339039532] [2020-10-13 15:32:37,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:37,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:37,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:37,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:37,178 INFO L87 Difference]: Start difference. First operand 196 states and 293 transitions. Second operand 5 states. [2020-10-13 15:32:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:37,884 INFO L93 Difference]: Finished difference Result 370 states and 561 transitions. [2020-10-13 15:32:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:37,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-13 15:32:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:37,887 INFO L225 Difference]: With dead ends: 370 [2020-10-13 15:32:37,887 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 15:32:37,888 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 15:32:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 15:32:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2020-10-13 15:32:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 292 transitions. [2020-10-13 15:32:37,900 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 292 transitions. Word has length 70 [2020-10-13 15:32:37,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:37,900 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 292 transitions. [2020-10-13 15:32:37,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 292 transitions. [2020-10-13 15:32:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:32:37,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:37,902 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 15:32:37,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:32:37,903 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:37,903 INFO L82 PathProgramCache]: Analyzing trace with hash -253943991, now seen corresponding path program 1 times [2020-10-13 15:32:37,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:37,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142211737] [2020-10-13 15:32:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:37,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:38,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:32:38,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:32:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-13 15:32:38,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:32:38,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:38,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:38,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:38,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:38,723 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 15:32:38,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142211737] [2020-10-13 15:32:38,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:38,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:38,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234561308] [2020-10-13 15:32:38,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:38,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:38,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:38,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:38,725 INFO L87 Difference]: Start difference. First operand 196 states and 292 transitions. Second operand 5 states. [2020-10-13 15:32:39,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:39,379 INFO L93 Difference]: Finished difference Result 388 states and 582 transitions. [2020-10-13 15:32:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:39,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:32:39,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:39,381 INFO L225 Difference]: With dead ends: 388 [2020-10-13 15:32:39,382 INFO L226 Difference]: Without dead ends: 217 [2020-10-13 15:32:39,382 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 15:32:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-13 15:32:39,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2020-10-13 15:32:39,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:39,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 291 transitions. [2020-10-13 15:32:39,399 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 291 transitions. Word has length 81 [2020-10-13 15:32:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:39,400 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 291 transitions. [2020-10-13 15:32:39,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 291 transitions. [2020-10-13 15:32:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:32:39,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:39,401 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 15:32:39,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:32:39,402 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:39,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:39,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1888938002, now seen corresponding path program 1 times [2020-10-13 15:32:39,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:39,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654067062] [2020-10-13 15:32:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:39,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:39,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:40,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:40,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:32:40,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:32:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-13 15:32:40,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:32:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:40,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:40,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:40,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:40,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:40,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:40,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:40,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:40,149 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 15:32:40,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654067062] [2020-10-13 15:32:40,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:40,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:40,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953551296] [2020-10-13 15:32:40,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:40,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:40,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:40,150 INFO L87 Difference]: Start difference. First operand 196 states and 291 transitions. Second operand 5 states. [2020-10-13 15:32:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:40,717 INFO L93 Difference]: Finished difference Result 386 states and 578 transitions. [2020-10-13 15:32:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:40,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:32:40,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:40,719 INFO L225 Difference]: With dead ends: 386 [2020-10-13 15:32:40,719 INFO L226 Difference]: Without dead ends: 215 [2020-10-13 15:32:40,720 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 15:32:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-13 15:32:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 196. [2020-10-13 15:32:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:40,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 290 transitions. [2020-10-13 15:32:40,735 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 290 transitions. Word has length 82 [2020-10-13 15:32:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:40,735 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 290 transitions. [2020-10-13 15:32:40,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 290 transitions. [2020-10-13 15:32:40,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:32:40,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:40,737 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 15:32:40,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:32:40,737 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:40,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1111894259, now seen corresponding path program 1 times [2020-10-13 15:32:40,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:40,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588943953] [2020-10-13 15:32:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:40,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:40,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:41,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:32:41,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:41,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-13 15:32:41,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:32:41,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:41,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:41,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:41,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:41,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:41,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:41,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:41,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:41,313 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 15:32:41,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588943953] [2020-10-13 15:32:41,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:41,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:41,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39439494] [2020-10-13 15:32:41,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:41,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:41,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:41,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:41,315 INFO L87 Difference]: Start difference. First operand 196 states and 290 transitions. Second operand 5 states. [2020-10-13 15:32:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:41,855 INFO L93 Difference]: Finished difference Result 385 states and 575 transitions. [2020-10-13 15:32:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:41,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:32:41,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:41,857 INFO L225 Difference]: With dead ends: 385 [2020-10-13 15:32:41,857 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:32:41,858 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 15:32:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:32:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2020-10-13 15:32:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 289 transitions. [2020-10-13 15:32:41,865 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 289 transitions. Word has length 82 [2020-10-13 15:32:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:41,865 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 289 transitions. [2020-10-13 15:32:41,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 289 transitions. [2020-10-13 15:32:41,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 15:32:41,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:41,867 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, 1] [2020-10-13 15:32:41,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:32:41,867 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:41,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:41,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1919232310, now seen corresponding path program 1 times [2020-10-13 15:32:41,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:41,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756718975] [2020-10-13 15:32:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:41,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:42,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:45,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:45,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:46,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:46,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 15:32:46,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:32:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:32:46,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:32:46,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:46,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:46,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:46,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:46,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:46,943 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 15:32:46,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756718975] [2020-10-13 15:32:46,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:46,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:46,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159325507] [2020-10-13 15:32:46,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:46,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:46,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:46,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:46,945 INFO L87 Difference]: Start difference. First operand 196 states and 289 transitions. Second operand 5 states. [2020-10-13 15:32:47,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:47,493 INFO L93 Difference]: Finished difference Result 384 states and 572 transitions. [2020-10-13 15:32:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:47,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-13 15:32:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:47,495 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:32:47,495 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:32:47,496 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 15:32:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:32:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:32:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2020-10-13 15:32:47,503 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 84 [2020-10-13 15:32:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:47,504 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2020-10-13 15:32:47,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2020-10-13 15:32:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 15:32:47,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:47,505 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, 1] [2020-10-13 15:32:47,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:32:47,506 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:47,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:47,506 INFO L82 PathProgramCache]: Analyzing trace with hash 250235230, now seen corresponding path program 1 times [2020-10-13 15:32:47,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:47,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49820568] [2020-10-13 15:32:47,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:47,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:47,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:47,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:47,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:52,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:52,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 15:32:52,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:32:52,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:32:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:52,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:52,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:52,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:52,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:52,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:52,576 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 15:32:52,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49820568] [2020-10-13 15:32:52,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:52,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:52,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690179910] [2020-10-13 15:32:52,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:52,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:52,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:52,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:52,579 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand 5 states. [2020-10-13 15:32:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:53,104 INFO L93 Difference]: Finished difference Result 384 states and 570 transitions. [2020-10-13 15:32:53,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:53,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-13 15:32:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:53,106 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:32:53,106 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:32:53,106 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 15:32:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:32:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:32:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2020-10-13 15:32:53,114 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 84 [2020-10-13 15:32:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:53,114 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2020-10-13 15:32:53,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2020-10-13 15:32:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 15:32:53,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:53,115 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, 1] [2020-10-13 15:32:53,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:32:53,118 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:53,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:53,119 INFO L82 PathProgramCache]: Analyzing trace with hash 791554393, now seen corresponding path program 1 times [2020-10-13 15:32:53,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:53,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983256196] [2020-10-13 15:32:53,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:53,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:53,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:55,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:55,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:58,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 15:32:58,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:58,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:32:58,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:32:58,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:58,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:58,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:32:58,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:58,192 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 15:32:58,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983256196] [2020-10-13 15:32:58,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:58,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:58,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433824251] [2020-10-13 15:32:58,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:58,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:58,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:58,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:58,194 INFO L87 Difference]: Start difference. First operand 196 states and 287 transitions. Second operand 5 states. [2020-10-13 15:32:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:58,724 INFO L93 Difference]: Finished difference Result 384 states and 568 transitions. [2020-10-13 15:32:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:58,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-13 15:32:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:58,726 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:32:58,726 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:32:58,727 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 15:32:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:32:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:32:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 286 transitions. [2020-10-13 15:32:58,734 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 286 transitions. Word has length 85 [2020-10-13 15:32:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:58,735 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 286 transitions. [2020-10-13 15:32:58,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 286 transitions. [2020-10-13 15:32:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:32:58,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:58,736 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, 1] [2020-10-13 15:32:58,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:32:58,736 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:58,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1763564931, now seen corresponding path program 1 times [2020-10-13 15:32:58,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:58,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284096532] [2020-10-13 15:32:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:00,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:03,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:03,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:33:03,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:03,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:33:03,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:03,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:33:03,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:03,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:03,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:03,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:03,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:03,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:03,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:03,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:03,817 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 15:33:03,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284096532] [2020-10-13 15:33:03,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:03,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:03,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989296835] [2020-10-13 15:33:03,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:03,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:03,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:03,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:03,819 INFO L87 Difference]: Start difference. First operand 196 states and 286 transitions. Second operand 5 states. [2020-10-13 15:33:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:04,338 INFO L93 Difference]: Finished difference Result 384 states and 566 transitions. [2020-10-13 15:33:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:04,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:33:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:04,340 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:33:04,340 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:33:04,341 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 15:33:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:33:04,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:33:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:33:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 285 transitions. [2020-10-13 15:33:04,348 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 285 transitions. Word has length 86 [2020-10-13 15:33:04,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:04,348 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 285 transitions. [2020-10-13 15:33:04,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:04,348 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 285 transitions. [2020-10-13 15:33:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:33:04,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:04,350 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, 1] [2020-10-13 15:33:04,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:33:04,350 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:04,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:04,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1092861090, now seen corresponding path program 1 times [2020-10-13 15:33:04,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:04,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723133369] [2020-10-13 15:33:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:04,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:04,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:05,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:09,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:09,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:33:09,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:33:09,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:33:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:09,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:09,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:09,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:09,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:09,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:09,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:09,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:09,425 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 15:33:09,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723133369] [2020-10-13 15:33:09,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:09,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:09,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642136587] [2020-10-13 15:33:09,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:09,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:09,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:09,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:09,426 INFO L87 Difference]: Start difference. First operand 196 states and 285 transitions. Second operand 5 states. [2020-10-13 15:33:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:09,958 INFO L93 Difference]: Finished difference Result 374 states and 552 transitions. [2020-10-13 15:33:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:09,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:33:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:09,961 INFO L225 Difference]: With dead ends: 374 [2020-10-13 15:33:09,961 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 15:33:09,962 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 15:33:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 15:33:09,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2020-10-13 15:33:09,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:33:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 284 transitions. [2020-10-13 15:33:09,970 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 284 transitions. Word has length 87 [2020-10-13 15:33:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:09,970 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 284 transitions. [2020-10-13 15:33:09,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:09,970 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 284 transitions. [2020-10-13 15:33:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:33:09,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:09,972 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 15:33:09,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:33:09,972 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:09,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:09,972 INFO L82 PathProgramCache]: Analyzing trace with hash 993846948, now seen corresponding path program 1 times [2020-10-13 15:33:09,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:09,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892261027] [2020-10-13 15:33:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:10,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:10,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:10,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:10,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 15:33:10,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:10,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-13 15:33:10,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:10,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:33:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 15:33:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:33:10,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:10,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:10,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:10,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:10,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:10,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:10,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:10,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:10,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:10,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892261027] [2020-10-13 15:33:10,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:10,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:33:10,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848951944] [2020-10-13 15:33:10,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:33:10,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:10,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:33:10,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:33:10,600 INFO L87 Difference]: Start difference. First operand 196 states and 284 transitions. Second operand 4 states. [2020-10-13 15:33:10,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:10,978 INFO L93 Difference]: Finished difference Result 394 states and 577 transitions. [2020-10-13 15:33:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:33:10,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-10-13 15:33:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:10,981 INFO L225 Difference]: With dead ends: 394 [2020-10-13 15:33:10,981 INFO L226 Difference]: Without dead ends: 223 [2020-10-13 15:33:10,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:33:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-13 15:33:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-10-13 15:33:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-13 15:33:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 319 transitions. [2020-10-13 15:33:10,990 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 319 transitions. Word has length 90 [2020-10-13 15:33:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:10,990 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 319 transitions. [2020-10-13 15:33:10,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:33:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 319 transitions. [2020-10-13 15:33:10,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:33:10,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:10,991 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 15:33:10,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:33:10,992 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:10,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:10,992 INFO L82 PathProgramCache]: Analyzing trace with hash 100360610, now seen corresponding path program 1 times [2020-10-13 15:33:10,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:10,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742568749] [2020-10-13 15:33:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:11,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:11,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 15:33:11,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-13 15:33:11,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 15:33:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:11,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:11,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:11,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:11,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:11,573 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 15:33:11,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742568749] [2020-10-13 15:33:11,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:11,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:11,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041769975] [2020-10-13 15:33:11,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:11,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:11,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:11,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:11,575 INFO L87 Difference]: Start difference. First operand 223 states and 319 transitions. Second operand 5 states. [2020-10-13 15:33:12,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:12,270 INFO L93 Difference]: Finished difference Result 519 states and 760 transitions. [2020-10-13 15:33:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:12,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 15:33:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:12,275 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:33:12,276 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:33:12,277 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 15:33:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:33:12,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 266. [2020-10-13 15:33:12,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-13 15:33:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 397 transitions. [2020-10-13 15:33:12,286 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 397 transitions. Word has length 90 [2020-10-13 15:33:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:12,286 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 397 transitions. [2020-10-13 15:33:12,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:12,286 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 397 transitions. [2020-10-13 15:33:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:33:12,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:12,287 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 15:33:12,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:33:12,288 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:12,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:12,288 INFO L82 PathProgramCache]: Analyzing trace with hash -797032668, now seen corresponding path program 1 times [2020-10-13 15:33:12,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:12,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897679500] [2020-10-13 15:33:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:12,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:12,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:12,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 15:33:12,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:12,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-13 15:33:12,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:33:12,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:12,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:12,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:12,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:12,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:12,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:12,729 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 15:33:12,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897679500] [2020-10-13 15:33:12,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:12,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:12,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905977047] [2020-10-13 15:33:12,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:12,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:12,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:12,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:12,731 INFO L87 Difference]: Start difference. First operand 266 states and 397 transitions. Second operand 5 states. [2020-10-13 15:33:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:13,386 INFO L93 Difference]: Finished difference Result 557 states and 841 transitions. [2020-10-13 15:33:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:13,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 15:33:13,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:13,388 INFO L225 Difference]: With dead ends: 557 [2020-10-13 15:33:13,389 INFO L226 Difference]: Without dead ends: 316 [2020-10-13 15:33:13,390 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 15:33:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-13 15:33:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 290. [2020-10-13 15:33:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 439 transitions. [2020-10-13 15:33:13,399 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 439 transitions. Word has length 90 [2020-10-13 15:33:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:13,400 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 439 transitions. [2020-10-13 15:33:13,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 439 transitions. [2020-10-13 15:33:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:33:13,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:13,401 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 15:33:13,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:33:13,401 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:13,402 INFO L82 PathProgramCache]: Analyzing trace with hash -893403319, now seen corresponding path program 1 times [2020-10-13 15:33:13,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:13,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473942351] [2020-10-13 15:33:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:14,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:33:14,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:14,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-10-13 15:33:14,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:14,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:14,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:14,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:33:14,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:14,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:14,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:14,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:14,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:14,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:14,715 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 15:33:14,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473942351] [2020-10-13 15:33:14,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:14,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:14,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610094111] [2020-10-13 15:33:14,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:14,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:14,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:14,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:14,717 INFO L87 Difference]: Start difference. First operand 290 states and 439 transitions. Second operand 5 states. [2020-10-13 15:33:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:15,436 INFO L93 Difference]: Finished difference Result 610 states and 921 transitions. [2020-10-13 15:33:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:15,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:33:15,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:15,438 INFO L225 Difference]: With dead ends: 610 [2020-10-13 15:33:15,438 INFO L226 Difference]: Without dead ends: 345 [2020-10-13 15:33:15,439 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 15:33:15,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-13 15:33:15,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 290. [2020-10-13 15:33:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:15,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 438 transitions. [2020-10-13 15:33:15,448 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 438 transitions. Word has length 103 [2020-10-13 15:33:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:15,448 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 438 transitions. [2020-10-13 15:33:15,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 438 transitions. [2020-10-13 15:33:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:33:15,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:15,450 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 15:33:15,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:33:15,451 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:15,451 INFO L82 PathProgramCache]: Analyzing trace with hash -852728569, now seen corresponding path program 1 times [2020-10-13 15:33:15,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:15,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385394902] [2020-10-13 15:33:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:15,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:16,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:33:16,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-10-13 15:33:16,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:33:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:16,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:16,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:16,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:16,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:16,930 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 15:33:16,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385394902] [2020-10-13 15:33:16,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:16,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:16,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085057222] [2020-10-13 15:33:16,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:16,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:16,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:16,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:16,931 INFO L87 Difference]: Start difference. First operand 290 states and 438 transitions. Second operand 5 states. [2020-10-13 15:33:17,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:17,563 INFO L93 Difference]: Finished difference Result 581 states and 880 transitions. [2020-10-13 15:33:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:17,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:33:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:17,566 INFO L225 Difference]: With dead ends: 581 [2020-10-13 15:33:17,566 INFO L226 Difference]: Without dead ends: 316 [2020-10-13 15:33:17,567 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 15:33:17,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-13 15:33:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 290. [2020-10-13 15:33:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 437 transitions. [2020-10-13 15:33:17,575 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 437 transitions. Word has length 103 [2020-10-13 15:33:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:17,576 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 437 transitions. [2020-10-13 15:33:17,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 437 transitions. [2020-10-13 15:33:17,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:33:17,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:17,577 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 15:33:17,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:33:17,577 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:17,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:17,578 INFO L82 PathProgramCache]: Analyzing trace with hash -237340690, now seen corresponding path program 1 times [2020-10-13 15:33:17,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:17,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992638658] [2020-10-13 15:33:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:18,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:18,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:33:18,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-10-13 15:33:18,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:18,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:18,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:33:18,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:18,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:18,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:18,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:18,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:18,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:18,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:18,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:18,899 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 15:33:18,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992638658] [2020-10-13 15:33:18,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:18,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:18,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261640240] [2020-10-13 15:33:18,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:18,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:18,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:18,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:18,901 INFO L87 Difference]: Start difference. First operand 290 states and 437 transitions. Second operand 5 states. [2020-10-13 15:33:19,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:19,644 INFO L93 Difference]: Finished difference Result 608 states and 915 transitions. [2020-10-13 15:33:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:19,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:33:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:19,646 INFO L225 Difference]: With dead ends: 608 [2020-10-13 15:33:19,646 INFO L226 Difference]: Without dead ends: 343 [2020-10-13 15:33:19,647 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 15:33:19,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-13 15:33:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 290. [2020-10-13 15:33:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 436 transitions. [2020-10-13 15:33:19,660 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 436 transitions. Word has length 104 [2020-10-13 15:33:19,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:19,660 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 436 transitions. [2020-10-13 15:33:19,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 436 transitions. [2020-10-13 15:33:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:33:19,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:19,661 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 15:33:19,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:33:19,662 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:19,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:19,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1531475725, now seen corresponding path program 1 times [2020-10-13 15:33:19,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:19,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950656457] [2020-10-13 15:33:19,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:19,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:19,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:19,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:20,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:20,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:33:20,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-13 15:33:20,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:33:20,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:20,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:20,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:20,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:20,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:20,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:20,271 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 15:33:20,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950656457] [2020-10-13 15:33:20,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:20,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:20,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821694039] [2020-10-13 15:33:20,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:20,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:20,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:20,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:20,273 INFO L87 Difference]: Start difference. First operand 290 states and 436 transitions. Second operand 5 states. [2020-10-13 15:33:20,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:20,967 INFO L93 Difference]: Finished difference Result 607 states and 912 transitions. [2020-10-13 15:33:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:20,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:33:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:20,970 INFO L225 Difference]: With dead ends: 607 [2020-10-13 15:33:20,970 INFO L226 Difference]: Without dead ends: 342 [2020-10-13 15:33:20,971 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 15:33:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-13 15:33:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 290. [2020-10-13 15:33:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 435 transitions. [2020-10-13 15:33:20,980 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 435 transitions. Word has length 104 [2020-10-13 15:33:20,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:20,980 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 435 transitions. [2020-10-13 15:33:20,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 435 transitions. [2020-10-13 15:33:20,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:33:20,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:20,982 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 15:33:20,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:33:20,987 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:20,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1023576560, now seen corresponding path program 1 times [2020-10-13 15:33:20,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:20,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355289379] [2020-10-13 15:33:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:21,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:21,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:22,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:22,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:33:22,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:22,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1378 [2020-10-13 15:33:22,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:33:22,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:22,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:22,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:22,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:22,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:22,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:22,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:22,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:22,450 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 15:33:22,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355289379] [2020-10-13 15:33:22,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:22,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:22,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491622498] [2020-10-13 15:33:22,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:22,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:22,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:22,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:22,453 INFO L87 Difference]: Start difference. First operand 290 states and 435 transitions. Second operand 5 states. [2020-10-13 15:33:23,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:23,092 INFO L93 Difference]: Finished difference Result 579 states and 872 transitions. [2020-10-13 15:33:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:23,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:33:23,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:23,095 INFO L225 Difference]: With dead ends: 579 [2020-10-13 15:33:23,095 INFO L226 Difference]: Without dead ends: 314 [2020-10-13 15:33:23,096 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 15:33:23,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-13 15:33:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 290. [2020-10-13 15:33:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 434 transitions. [2020-10-13 15:33:23,104 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 434 transitions. Word has length 104 [2020-10-13 15:33:23,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:23,104 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 434 transitions. [2020-10-13 15:33:23,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 434 transitions. [2020-10-13 15:33:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:33:23,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:23,106 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 15:33:23,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:33:23,106 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:23,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:23,107 INFO L82 PathProgramCache]: Analyzing trace with hash -270558475, now seen corresponding path program 1 times [2020-10-13 15:33:23,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:23,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311955986] [2020-10-13 15:33:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:23,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:23,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:23,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:33:23,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-13 15:33:23,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:33:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:23,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:23,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:23,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:23,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:23,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:23,685 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 15:33:23,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311955986] [2020-10-13 15:33:23,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:23,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:23,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461600531] [2020-10-13 15:33:23,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:23,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:23,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:23,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:23,686 INFO L87 Difference]: Start difference. First operand 290 states and 434 transitions. Second operand 5 states. [2020-10-13 15:33:24,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:24,316 INFO L93 Difference]: Finished difference Result 578 states and 869 transitions. [2020-10-13 15:33:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:24,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:33:24,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:24,319 INFO L225 Difference]: With dead ends: 578 [2020-10-13 15:33:24,319 INFO L226 Difference]: Without dead ends: 313 [2020-10-13 15:33:24,320 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 15:33:24,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-13 15:33:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 290. [2020-10-13 15:33:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 433 transitions. [2020-10-13 15:33:24,328 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 433 transitions. Word has length 104 [2020-10-13 15:33:24,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:24,329 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 433 transitions. [2020-10-13 15:33:24,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:24,329 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 433 transitions. [2020-10-13 15:33:24,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:33:24,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:24,330 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, 1] [2020-10-13 15:33:24,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:33:24,330 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:24,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:24,331 INFO L82 PathProgramCache]: Analyzing trace with hash 422852298, now seen corresponding path program 1 times [2020-10-13 15:33:24,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:24,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563029205] [2020-10-13 15:33:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:24,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:28,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:29,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:29,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:33:29,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:33:29,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:33:29,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:33:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:29,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:29,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:29,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:29,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:29,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:29,413 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 15:33:29,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563029205] [2020-10-13 15:33:29,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:29,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:29,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744920043] [2020-10-13 15:33:29,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:29,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:29,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:29,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:29,415 INFO L87 Difference]: Start difference. First operand 290 states and 433 transitions. Second operand 5 states. [2020-10-13 15:33:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:30,101 INFO L93 Difference]: Finished difference Result 606 states and 905 transitions. [2020-10-13 15:33:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:30,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:33:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:30,103 INFO L225 Difference]: With dead ends: 606 [2020-10-13 15:33:30,103 INFO L226 Difference]: Without dead ends: 341 [2020-10-13 15:33:30,105 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 15:33:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-13 15:33:30,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-10-13 15:33:30,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 432 transitions. [2020-10-13 15:33:30,113 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 432 transitions. Word has length 106 [2020-10-13 15:33:30,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:30,114 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 432 transitions. [2020-10-13 15:33:30,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:30,114 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 432 transitions. [2020-10-13 15:33:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:33:30,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:30,115 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, 1] [2020-10-13 15:33:30,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:33:30,115 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:30,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1702647458, now seen corresponding path program 1 times [2020-10-13 15:33:30,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:30,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726751363] [2020-10-13 15:33:30,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:30,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:30,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:33:35,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:33:35,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:33:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:35,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:35,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:35,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:35,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:35,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:35,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:35,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:35,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:35,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:35,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:35,191 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 15:33:35,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726751363] [2020-10-13 15:33:35,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:35,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:35,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232071749] [2020-10-13 15:33:35,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:35,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:35,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:35,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:35,193 INFO L87 Difference]: Start difference. First operand 290 states and 432 transitions. Second operand 5 states. [2020-10-13 15:33:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:35,896 INFO L93 Difference]: Finished difference Result 606 states and 903 transitions. [2020-10-13 15:33:35,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:35,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:33:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:35,899 INFO L225 Difference]: With dead ends: 606 [2020-10-13 15:33:35,899 INFO L226 Difference]: Without dead ends: 341 [2020-10-13 15:33:35,900 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 15:33:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-13 15:33:35,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-10-13 15:33:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 431 transitions. [2020-10-13 15:33:35,908 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 431 transitions. Word has length 106 [2020-10-13 15:33:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:35,908 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 431 transitions. [2020-10-13 15:33:35,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 431 transitions. [2020-10-13 15:33:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:33:35,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:35,910 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, 1] [2020-10-13 15:33:35,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:33:35,910 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:35,911 INFO L82 PathProgramCache]: Analyzing trace with hash 983552076, now seen corresponding path program 1 times [2020-10-13 15:33:35,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:35,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068648230] [2020-10-13 15:33:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:35,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:35,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:40,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:40,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:40,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:40,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:33:40,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:33:40,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:33:40,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:40,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:40,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:40,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:33:40,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:40,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:40,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:40,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:40,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:40,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:40,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:41,000 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 15:33:41,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068648230] [2020-10-13 15:33:41,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:41,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:41,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033558222] [2020-10-13 15:33:41,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:41,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:41,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:41,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:41,002 INFO L87 Difference]: Start difference. First operand 290 states and 431 transitions. Second operand 5 states. [2020-10-13 15:33:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:41,598 INFO L93 Difference]: Finished difference Result 577 states and 862 transitions. [2020-10-13 15:33:41,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:41,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:33:41,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:41,600 INFO L225 Difference]: With dead ends: 577 [2020-10-13 15:33:41,600 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:33:41,601 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 15:33:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:33:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 290. [2020-10-13 15:33:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 430 transitions. [2020-10-13 15:33:41,609 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 430 transitions. Word has length 106 [2020-10-13 15:33:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:41,609 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 430 transitions. [2020-10-13 15:33:41,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 430 transitions. [2020-10-13 15:33:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:33:41,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:41,611 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, 1] [2020-10-13 15:33:41,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:33:41,611 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:41,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:41,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1141947680, now seen corresponding path program 1 times [2020-10-13 15:33:41,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:41,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531448320] [2020-10-13 15:33:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:41,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:43,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:43,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:46,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:46,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:33:46,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:33:46,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:33:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:46,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:46,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:46,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:46,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:46,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:46,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:46,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:46,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:46,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:46,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:46,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:46,690 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 15:33:46,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531448320] [2020-10-13 15:33:46,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:46,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:46,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894218588] [2020-10-13 15:33:46,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:46,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:46,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:46,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:46,692 INFO L87 Difference]: Start difference. First operand 290 states and 430 transitions. Second operand 5 states. [2020-10-13 15:33:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:47,290 INFO L93 Difference]: Finished difference Result 577 states and 860 transitions. [2020-10-13 15:33:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:47,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:33:47,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:47,293 INFO L225 Difference]: With dead ends: 577 [2020-10-13 15:33:47,293 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:33:47,295 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 15:33:47,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:33:47,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 290. [2020-10-13 15:33:47,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 429 transitions. [2020-10-13 15:33:47,302 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 429 transitions. Word has length 106 [2020-10-13 15:33:47,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:47,302 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 429 transitions. [2020-10-13 15:33:47,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 429 transitions. [2020-10-13 15:33:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:33:47,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:47,304 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, 1] [2020-10-13 15:33:47,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:33:47,304 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:47,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:47,305 INFO L82 PathProgramCache]: Analyzing trace with hash 381733209, now seen corresponding path program 1 times [2020-10-13 15:33:47,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:47,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53833895] [2020-10-13 15:33:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:47,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:47,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:52,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:52,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:33:52,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:33:52,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:33:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:52,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:52,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:52,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:52,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:52,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:52,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:52,390 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 15:33:52,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53833895] [2020-10-13 15:33:52,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:52,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:52,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332242807] [2020-10-13 15:33:52,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:52,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:52,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:52,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:52,392 INFO L87 Difference]: Start difference. First operand 290 states and 429 transitions. Second operand 5 states. [2020-10-13 15:33:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:53,114 INFO L93 Difference]: Finished difference Result 606 states and 897 transitions. [2020-10-13 15:33:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:53,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:33:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:53,116 INFO L225 Difference]: With dead ends: 606 [2020-10-13 15:33:53,116 INFO L226 Difference]: Without dead ends: 341 [2020-10-13 15:33:53,117 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 15:33:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-13 15:33:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-10-13 15:33:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 428 transitions. [2020-10-13 15:33:53,125 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 428 transitions. Word has length 107 [2020-10-13 15:33:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:53,125 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 428 transitions. [2020-10-13 15:33:53,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 428 transitions. [2020-10-13 15:33:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:33:53,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:53,127 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, 1] [2020-10-13 15:33:53,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:33:53,127 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash 583557143, now seen corresponding path program 1 times [2020-10-13 15:33:53,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:53,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344086572] [2020-10-13 15:33:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:53,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:53,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:53,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:57,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:58,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:33:58,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:33:58,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:33:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:58,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:58,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:58,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:58,209 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 15:33:58,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344086572] [2020-10-13 15:33:58,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:58,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:58,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724358322] [2020-10-13 15:33:58,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:58,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:58,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:58,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:58,211 INFO L87 Difference]: Start difference. First operand 290 states and 428 transitions. Second operand 5 states. [2020-10-13 15:33:58,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:58,831 INFO L93 Difference]: Finished difference Result 577 states and 856 transitions. [2020-10-13 15:33:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:58,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:33:58,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:58,833 INFO L225 Difference]: With dead ends: 577 [2020-10-13 15:33:58,833 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:33:58,834 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 15:33:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:33:58,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 290. [2020-10-13 15:33:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 427 transitions. [2020-10-13 15:33:58,840 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 427 transitions. Word has length 107 [2020-10-13 15:33:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:58,840 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 427 transitions. [2020-10-13 15:33:58,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 427 transitions. [2020-10-13 15:33:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:33:58,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:58,841 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, 1] [2020-10-13 15:33:58,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:33:58,842 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:58,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1944010115, now seen corresponding path program 1 times [2020-10-13 15:33:58,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:58,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822678600] [2020-10-13 15:33:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:58,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:03,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:03,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:03,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:34:03,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:34:03,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:34:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:03,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:03,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:03,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:03,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:03,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:03,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:03,928 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 15:34:03,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822678600] [2020-10-13 15:34:03,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:03,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:03,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930443631] [2020-10-13 15:34:03,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:03,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:03,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:03,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:03,929 INFO L87 Difference]: Start difference. First operand 290 states and 427 transitions. Second operand 5 states. [2020-10-13 15:34:04,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:04,644 INFO L93 Difference]: Finished difference Result 606 states and 893 transitions. [2020-10-13 15:34:04,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:04,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:34:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:04,647 INFO L225 Difference]: With dead ends: 606 [2020-10-13 15:34:04,647 INFO L226 Difference]: Without dead ends: 341 [2020-10-13 15:34:04,648 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 15:34:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-13 15:34:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-10-13 15:34:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 426 transitions. [2020-10-13 15:34:04,655 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 426 transitions. Word has length 108 [2020-10-13 15:34:04,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:04,656 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 426 transitions. [2020-10-13 15:34:04,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 426 transitions. [2020-10-13 15:34:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:34:04,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:04,657 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, 1] [2020-10-13 15:34:04,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:34:04,657 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash -389382523, now seen corresponding path program 1 times [2020-10-13 15:34:04,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:04,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397578658] [2020-10-13 15:34:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:09,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:09,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:34:09,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:34:09,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:34:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:09,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:09,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:09,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:09,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:09,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:09,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:09,747 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 15:34:09,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397578658] [2020-10-13 15:34:09,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:09,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:09,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865839582] [2020-10-13 15:34:09,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:09,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:09,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:09,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:09,749 INFO L87 Difference]: Start difference. First operand 290 states and 426 transitions. Second operand 5 states. [2020-10-13 15:34:10,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:10,358 INFO L93 Difference]: Finished difference Result 577 states and 852 transitions. [2020-10-13 15:34:10,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:10,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:34:10,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:10,360 INFO L225 Difference]: With dead ends: 577 [2020-10-13 15:34:10,360 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:34:10,361 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 15:34:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:34:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 290. [2020-10-13 15:34:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:10,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 425 transitions. [2020-10-13 15:34:10,369 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 425 transitions. Word has length 108 [2020-10-13 15:34:10,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:10,370 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 425 transitions. [2020-10-13 15:34:10,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 425 transitions. [2020-10-13 15:34:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:34:10,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:10,371 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, 1] [2020-10-13 15:34:10,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:34:10,372 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:10,372 INFO L82 PathProgramCache]: Analyzing trace with hash 205972318, now seen corresponding path program 1 times [2020-10-13 15:34:10,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:10,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976988379] [2020-10-13 15:34:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:10,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:15,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:15,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:34:15,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:34:15,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:34:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:15,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:15,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:15,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:15,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:15,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:15,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:15,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:15,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:15,463 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 15:34:15,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976988379] [2020-10-13 15:34:15,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:15,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:15,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761281526] [2020-10-13 15:34:15,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:15,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:15,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:15,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:15,464 INFO L87 Difference]: Start difference. First operand 290 states and 425 transitions. Second operand 5 states. [2020-10-13 15:34:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:16,130 INFO L93 Difference]: Finished difference Result 596 states and 877 transitions. [2020-10-13 15:34:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:16,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:34:16,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:16,131 INFO L225 Difference]: With dead ends: 596 [2020-10-13 15:34:16,131 INFO L226 Difference]: Without dead ends: 331 [2020-10-13 15:34:16,132 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 15:34:16,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-13 15:34:16,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 290. [2020-10-13 15:34:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 424 transitions. [2020-10-13 15:34:16,139 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 424 transitions. Word has length 109 [2020-10-13 15:34:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:16,139 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 424 transitions. [2020-10-13 15:34:16,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 424 transitions. [2020-10-13 15:34:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:34:16,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:16,140 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, 1] [2020-10-13 15:34:16,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:34:16,141 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:16,141 INFO L82 PathProgramCache]: Analyzing trace with hash 885244572, now seen corresponding path program 1 times [2020-10-13 15:34:16,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:16,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683618602] [2020-10-13 15:34:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:16,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:16,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:20,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:21,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:34:21,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:21,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 15:34:21,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:21,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:21,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:21,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:34:21,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:21,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:21,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:21,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:21,242 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 15:34:21,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683618602] [2020-10-13 15:34:21,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:21,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:21,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128387777] [2020-10-13 15:34:21,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:21,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:21,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:21,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:21,244 INFO L87 Difference]: Start difference. First operand 290 states and 424 transitions. Second operand 5 states. [2020-10-13 15:34:21,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:21,821 INFO L93 Difference]: Finished difference Result 567 states and 836 transitions. [2020-10-13 15:34:21,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:21,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:34:21,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:21,823 INFO L225 Difference]: With dead ends: 567 [2020-10-13 15:34:21,823 INFO L226 Difference]: Without dead ends: 302 [2020-10-13 15:34:21,824 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 15:34:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-13 15:34:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 290. [2020-10-13 15:34:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 423 transitions. [2020-10-13 15:34:21,831 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 423 transitions. Word has length 109 [2020-10-13 15:34:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:21,831 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 423 transitions. [2020-10-13 15:34:21,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 423 transitions. [2020-10-13 15:34:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:34:21,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:21,832 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 15:34:21,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:34:21,833 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:21,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:21,833 INFO L82 PathProgramCache]: Analyzing trace with hash -734078794, now seen corresponding path program 1 times [2020-10-13 15:34:21,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:21,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721658499] [2020-10-13 15:34:21,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:21,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:23,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:23,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:34:23,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1203 [2020-10-13 15:34:23,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:23,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:23,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:23,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:34:23,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:23,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:23,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:23,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:34:23,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:23,120 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 15:34:23,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721658499] [2020-10-13 15:34:23,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:23,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:23,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157247900] [2020-10-13 15:34:23,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:23,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:23,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:23,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:23,121 INFO L87 Difference]: Start difference. First operand 290 states and 423 transitions. Second operand 5 states. [2020-10-13 15:34:23,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:23,814 INFO L93 Difference]: Finished difference Result 596 states and 873 transitions. [2020-10-13 15:34:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:23,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:34:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:23,816 INFO L225 Difference]: With dead ends: 596 [2020-10-13 15:34:23,817 INFO L226 Difference]: Without dead ends: 331 [2020-10-13 15:34:23,817 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 15:34:23,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-13 15:34:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 290. [2020-10-13 15:34:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 422 transitions. [2020-10-13 15:34:23,823 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 422 transitions. Word has length 112 [2020-10-13 15:34:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:23,824 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 422 transitions. [2020-10-13 15:34:23,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 422 transitions. [2020-10-13 15:34:23,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:34:23,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:23,825 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 15:34:23,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:34:23,826 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:23,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:23,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1874708664, now seen corresponding path program 1 times [2020-10-13 15:34:23,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:23,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857780595] [2020-10-13 15:34:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:24,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:24,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:34:24,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-13 15:34:24,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:34:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:34:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:24,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:24,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:24,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:24,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:24,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:24,378 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 15:34:24,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857780595] [2020-10-13 15:34:24,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:24,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:24,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049956440] [2020-10-13 15:34:24,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:24,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:24,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:24,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:24,379 INFO L87 Difference]: Start difference. First operand 290 states and 422 transitions. Second operand 5 states. [2020-10-13 15:34:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:24,988 INFO L93 Difference]: Finished difference Result 609 states and 898 transitions. [2020-10-13 15:34:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:24,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:34:24,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:24,990 INFO L225 Difference]: With dead ends: 609 [2020-10-13 15:34:24,990 INFO L226 Difference]: Without dead ends: 344 [2020-10-13 15:34:24,991 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 15:34:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-13 15:34:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 316. [2020-10-13 15:34:25,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:34:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 468 transitions. [2020-10-13 15:34:25,001 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 468 transitions. Word has length 112 [2020-10-13 15:34:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:25,001 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 468 transitions. [2020-10-13 15:34:25,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 468 transitions. [2020-10-13 15:34:25,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:34:25,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:25,003 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 15:34:25,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:34:25,003 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:25,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:25,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1013501716, now seen corresponding path program 1 times [2020-10-13 15:34:25,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:25,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072365037] [2020-10-13 15:34:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:25,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:26,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:26,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:34:26,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:26,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-10-13 15:34:26,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:34:26,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:26,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:26,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:26,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:26,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:26,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:26,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:34:26,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:26,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:26,292 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 15:34:26,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072365037] [2020-10-13 15:34:26,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:26,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:26,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364095488] [2020-10-13 15:34:26,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:26,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:26,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:26,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:26,294 INFO L87 Difference]: Start difference. First operand 316 states and 468 transitions. Second operand 5 states. [2020-10-13 15:34:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:26,999 INFO L93 Difference]: Finished difference Result 648 states and 963 transitions. [2020-10-13 15:34:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:27,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:34:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:27,002 INFO L225 Difference]: With dead ends: 648 [2020-10-13 15:34:27,002 INFO L226 Difference]: Without dead ends: 357 [2020-10-13 15:34:27,003 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 15:34:27,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-13 15:34:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 316. [2020-10-13 15:34:27,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:34:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 467 transitions. [2020-10-13 15:34:27,010 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 467 transitions. Word has length 115 [2020-10-13 15:34:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:27,011 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 467 transitions. [2020-10-13 15:34:27,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 467 transitions. [2020-10-13 15:34:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:34:27,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:27,012 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 15:34:27,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:34:27,012 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:27,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:27,013 INFO L82 PathProgramCache]: Analyzing trace with hash -628615599, now seen corresponding path program 1 times [2020-10-13 15:34:27,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:27,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651423541] [2020-10-13 15:34:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:27,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:28,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:28,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:34:28,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:28,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-10-13 15:34:28,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:34:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:28,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:28,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:28,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:28,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:28,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:28,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:28,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:28,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:28,114 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 15:34:28,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651423541] [2020-10-13 15:34:28,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:28,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:28,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829861917] [2020-10-13 15:34:28,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:28,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:28,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:28,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:28,115 INFO L87 Difference]: Start difference. First operand 316 states and 467 transitions. Second operand 5 states. [2020-10-13 15:34:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:28,784 INFO L93 Difference]: Finished difference Result 640 states and 948 transitions. [2020-10-13 15:34:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:28,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:34:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:28,788 INFO L225 Difference]: With dead ends: 640 [2020-10-13 15:34:28,788 INFO L226 Difference]: Without dead ends: 349 [2020-10-13 15:34:28,789 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 15:34:28,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-13 15:34:28,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 316. [2020-10-13 15:34:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:34:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 466 transitions. [2020-10-13 15:34:28,798 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 466 transitions. Word has length 116 [2020-10-13 15:34:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:28,799 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 466 transitions. [2020-10-13 15:34:28,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 466 transitions. [2020-10-13 15:34:28,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:34:28,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:28,800 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 15:34:28,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:34:28,800 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:28,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:28,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1737263930, now seen corresponding path program 1 times [2020-10-13 15:34:28,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:28,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548939368] [2020-10-13 15:34:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:28,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:28,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:29,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:30,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:34:30,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:30,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1186 [2020-10-13 15:34:30,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:30,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:30,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:34:30,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:30,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:30,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:30,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:30,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:30,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:30,087 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 15:34:30,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548939368] [2020-10-13 15:34:30,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:30,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:30,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964853213] [2020-10-13 15:34:30,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:30,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:30,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:30,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:30,089 INFO L87 Difference]: Start difference. First operand 316 states and 466 transitions. Second operand 5 states. [2020-10-13 15:34:30,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:30,738 INFO L93 Difference]: Finished difference Result 640 states and 946 transitions. [2020-10-13 15:34:30,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:30,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:34:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:30,741 INFO L225 Difference]: With dead ends: 640 [2020-10-13 15:34:30,741 INFO L226 Difference]: Without dead ends: 349 [2020-10-13 15:34:30,742 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 15:34:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-13 15:34:30,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 316. [2020-10-13 15:34:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:34:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 465 transitions. [2020-10-13 15:34:30,749 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 465 transitions. Word has length 117 [2020-10-13 15:34:30,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:30,749 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 465 transitions. [2020-10-13 15:34:30,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 465 transitions. [2020-10-13 15:34:30,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:34:30,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:30,752 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 15:34:30,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:34:30,752 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:30,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:30,752 INFO L82 PathProgramCache]: Analyzing trace with hash 591247979, now seen corresponding path program 1 times [2020-10-13 15:34:30,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:30,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314236614] [2020-10-13 15:34:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:31,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:32,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:32,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:34:32,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-10-13 15:34:32,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:34:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:32,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:32,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:32,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:32,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:32,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:32,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:32,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:32,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:32,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:32,185 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 15:34:32,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314236614] [2020-10-13 15:34:32,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:32,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:32,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928106541] [2020-10-13 15:34:32,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:32,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:32,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:32,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:32,187 INFO L87 Difference]: Start difference. First operand 316 states and 465 transitions. Second operand 5 states. [2020-10-13 15:34:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:32,863 INFO L93 Difference]: Finished difference Result 640 states and 944 transitions. [2020-10-13 15:34:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:32,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:34:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:32,866 INFO L225 Difference]: With dead ends: 640 [2020-10-13 15:34:32,867 INFO L226 Difference]: Without dead ends: 349 [2020-10-13 15:34:32,867 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 15:34:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-13 15:34:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 316. [2020-10-13 15:34:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:34:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 464 transitions. [2020-10-13 15:34:32,875 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 464 transitions. Word has length 118 [2020-10-13 15:34:32,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:32,875 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 464 transitions. [2020-10-13 15:34:32,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 464 transitions. [2020-10-13 15:34:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:34:32,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:32,877 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 15:34:32,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:34:32,877 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:32,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1971163061, now seen corresponding path program 1 times [2020-10-13 15:34:32,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:32,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901895616] [2020-10-13 15:34:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:32,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:32,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:34,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:34,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:34:34,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:34,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1174 [2020-10-13 15:34:34,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 15:34:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:34:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:34,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:34,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:34,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:34,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:34,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:34,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:34,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:34,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:34,141 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 15:34:34,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901895616] [2020-10-13 15:34:34,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:34,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:34,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557233017] [2020-10-13 15:34:34,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:34,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:34,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:34,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:34,142 INFO L87 Difference]: Start difference. First operand 316 states and 464 transitions. Second operand 5 states. [2020-10-13 15:34:34,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:34,905 INFO L93 Difference]: Finished difference Result 681 states and 1014 transitions. [2020-10-13 15:34:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:34,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:34:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:34,908 INFO L225 Difference]: With dead ends: 681 [2020-10-13 15:34:34,908 INFO L226 Difference]: Without dead ends: 390 [2020-10-13 15:34:34,909 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 15:34:34,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-13 15:34:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 348. [2020-10-13 15:34:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-13 15:34:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 522 transitions. [2020-10-13 15:34:34,916 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 522 transitions. Word has length 118 [2020-10-13 15:34:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:34,916 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 522 transitions. [2020-10-13 15:34:34,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 522 transitions. [2020-10-13 15:34:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:34:34,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:34,918 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 15:34:34,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:34:34,918 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:34,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:34,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1648145990, now seen corresponding path program 1 times [2020-10-13 15:34:34,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:34,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330510435] [2020-10-13 15:34:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:35,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:36,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:36,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:34:36,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:36,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1313 [2020-10-13 15:34:36,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:36,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:36,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:36,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:34:36,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:36,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:36,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:36,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:36,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:36,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:36,326 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 15:34:36,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330510435] [2020-10-13 15:34:36,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:36,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:36,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480462087] [2020-10-13 15:34:36,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:36,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:36,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:36,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:36,327 INFO L87 Difference]: Start difference. First operand 348 states and 522 transitions. Second operand 5 states. [2020-10-13 15:34:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:36,986 INFO L93 Difference]: Finished difference Result 702 states and 1055 transitions. [2020-10-13 15:34:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:36,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:34:36,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:36,989 INFO L225 Difference]: With dead ends: 702 [2020-10-13 15:34:36,990 INFO L226 Difference]: Without dead ends: 379 [2020-10-13 15:34:36,990 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 15:34:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-13 15:34:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 348. [2020-10-13 15:34:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-13 15:34:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 521 transitions. [2020-10-13 15:34:36,998 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 521 transitions. Word has length 119 [2020-10-13 15:34:36,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:36,998 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 521 transitions. [2020-10-13 15:34:36,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:36,999 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 521 transitions. [2020-10-13 15:34:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:34:37,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:37,000 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, 1] [2020-10-13 15:34:37,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:34:37,000 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:37,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:37,000 INFO L82 PathProgramCache]: Analyzing trace with hash 473315357, now seen corresponding path program 1 times [2020-10-13 15:34:37,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:37,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841828942] [2020-10-13 15:34:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:37,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:37,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:34:37,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:34:37,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-13 15:34:37,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:34:37,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:37,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:37,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:37,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:37,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:37,416 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 15:34:37,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841828942] [2020-10-13 15:34:37,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:37,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:37,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638220185] [2020-10-13 15:34:37,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:37,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:37,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:37,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:37,418 INFO L87 Difference]: Start difference. First operand 348 states and 521 transitions. Second operand 5 states. [2020-10-13 15:34:38,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:38,064 INFO L93 Difference]: Finished difference Result 698 states and 1048 transitions. [2020-10-13 15:34:38,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:38,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:34:38,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:38,067 INFO L225 Difference]: With dead ends: 698 [2020-10-13 15:34:38,067 INFO L226 Difference]: Without dead ends: 375 [2020-10-13 15:34:38,068 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 15:34:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-13 15:34:38,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 348. [2020-10-13 15:34:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-13 15:34:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 520 transitions. [2020-10-13 15:34:38,075 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 520 transitions. Word has length 120 [2020-10-13 15:34:38,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:38,076 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 520 transitions. [2020-10-13 15:34:38,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 520 transitions. [2020-10-13 15:34:38,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:34:38,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:38,077 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 15:34:38,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:34:38,077 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:38,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1617305161, now seen corresponding path program 1 times [2020-10-13 15:34:38,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:38,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529718169] [2020-10-13 15:34:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:38,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:39,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:34:39,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-10-13 15:34:39,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:34:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:34:39,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:39,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:39,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:39,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:39,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:39,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:39,300 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 15:34:39,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529718169] [2020-10-13 15:34:39,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:39,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:39,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808947307] [2020-10-13 15:34:39,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:39,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:39,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:39,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:39,301 INFO L87 Difference]: Start difference. First operand 348 states and 520 transitions. Second operand 5 states. [2020-10-13 15:34:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:39,917 INFO L93 Difference]: Finished difference Result 710 states and 1070 transitions. [2020-10-13 15:34:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:39,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:34:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:39,920 INFO L225 Difference]: With dead ends: 710 [2020-10-13 15:34:39,920 INFO L226 Difference]: Without dead ends: 387 [2020-10-13 15:34:39,920 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 15:34:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-13 15:34:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 369. [2020-10-13 15:34:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-13 15:34:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 556 transitions. [2020-10-13 15:34:39,926 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 556 transitions. Word has length 121 [2020-10-13 15:34:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:39,927 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 556 transitions. [2020-10-13 15:34:39,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 556 transitions. [2020-10-13 15:34:39,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:34:39,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:39,928 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 15:34:39,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:34:39,928 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:39,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:39,928 INFO L82 PathProgramCache]: Analyzing trace with hash -2011586303, now seen corresponding path program 1 times [2020-10-13 15:34:39,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:39,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243391941] [2020-10-13 15:34:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:40,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:40,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:40,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:34:40,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:40,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-13 15:34:40,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:40,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:40,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:40,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:34:40,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:40,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:40,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:40,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:40,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:40,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:40,958 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 15:34:40,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243391941] [2020-10-13 15:34:40,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:40,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:40,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137599143] [2020-10-13 15:34:40,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:40,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:40,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:40,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:40,960 INFO L87 Difference]: Start difference. First operand 369 states and 556 transitions. Second operand 5 states. [2020-10-13 15:34:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:41,615 INFO L93 Difference]: Finished difference Result 740 states and 1118 transitions. [2020-10-13 15:34:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:41,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:34:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:41,618 INFO L225 Difference]: With dead ends: 740 [2020-10-13 15:34:41,618 INFO L226 Difference]: Without dead ends: 396 [2020-10-13 15:34:41,619 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 15:34:41,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-13 15:34:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 369. [2020-10-13 15:34:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-13 15:34:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 555 transitions. [2020-10-13 15:34:41,627 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 555 transitions. Word has length 122 [2020-10-13 15:34:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:41,627 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 555 transitions. [2020-10-13 15:34:41,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 555 transitions. [2020-10-13 15:34:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:34:41,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:41,629 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 15:34:41,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:34:41,629 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:41,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:41,629 INFO L82 PathProgramCache]: Analyzing trace with hash 383336097, now seen corresponding path program 1 times [2020-10-13 15:34:41,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:41,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057625353] [2020-10-13 15:34:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:41,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:41,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:42,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:42,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:34:42,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:42,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-13 15:34:42,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:34:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:42,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:42,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:42,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:42,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:42,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:42,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:42,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:42,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:42,624 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 15:34:42,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057625353] [2020-10-13 15:34:42,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:42,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:42,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880903197] [2020-10-13 15:34:42,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:42,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:42,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:42,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:42,626 INFO L87 Difference]: Start difference. First operand 369 states and 555 transitions. Second operand 5 states. [2020-10-13 15:34:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:43,273 INFO L93 Difference]: Finished difference Result 740 states and 1116 transitions. [2020-10-13 15:34:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:43,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:34:43,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:43,277 INFO L225 Difference]: With dead ends: 740 [2020-10-13 15:34:43,277 INFO L226 Difference]: Without dead ends: 396 [2020-10-13 15:34:43,277 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 15:34:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-13 15:34:43,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 369. [2020-10-13 15:34:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-13 15:34:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 554 transitions. [2020-10-13 15:34:43,285 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 554 transitions. Word has length 122 [2020-10-13 15:34:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:43,285 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 554 transitions. [2020-10-13 15:34:43,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 554 transitions. [2020-10-13 15:34:43,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:34:43,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:43,287 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 15:34:43,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:34:43,287 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:43,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:43,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1347630679, now seen corresponding path program 1 times [2020-10-13 15:34:43,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:43,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293449302] [2020-10-13 15:34:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:43,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:44,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:44,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:34:44,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:44,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-13 15:34:44,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:34:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:34:44,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:44,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:44,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:44,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:44,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:44,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:44,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:44,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:44,260 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 15:34:44,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293449302] [2020-10-13 15:34:44,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:44,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:44,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137900515] [2020-10-13 15:34:44,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:44,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:44,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:44,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:44,261 INFO L87 Difference]: Start difference. First operand 369 states and 554 transitions. Second operand 5 states. [2020-10-13 15:34:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:45,065 INFO L93 Difference]: Finished difference Result 800 states and 1213 transitions. [2020-10-13 15:34:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:45,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:34:45,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:45,068 INFO L225 Difference]: With dead ends: 800 [2020-10-13 15:34:45,068 INFO L226 Difference]: Without dead ends: 456 [2020-10-13 15:34:45,069 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 15:34:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-10-13 15:34:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 406. [2020-10-13 15:34:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-13 15:34:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 622 transitions. [2020-10-13 15:34:45,075 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 622 transitions. Word has length 123 [2020-10-13 15:34:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:45,075 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 622 transitions. [2020-10-13 15:34:45,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 622 transitions. [2020-10-13 15:34:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:34:45,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:45,076 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 15:34:45,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:34:45,077 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:45,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:45,077 INFO L82 PathProgramCache]: Analyzing trace with hash -305021609, now seen corresponding path program 1 times [2020-10-13 15:34:45,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:45,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171138614] [2020-10-13 15:34:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:46,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:34:46,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-13 15:34:46,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:34:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:34:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:46,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:46,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:46,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:46,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:46,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:46,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:46,107 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 15:34:46,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171138614] [2020-10-13 15:34:46,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:46,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:46,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027814257] [2020-10-13 15:34:46,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:46,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:46,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:46,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:46,108 INFO L87 Difference]: Start difference. First operand 406 states and 622 transitions. Second operand 5 states. [2020-10-13 15:34:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:46,917 INFO L93 Difference]: Finished difference Result 870 states and 1343 transitions. [2020-10-13 15:34:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:46,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:34:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:46,920 INFO L225 Difference]: With dead ends: 870 [2020-10-13 15:34:46,920 INFO L226 Difference]: Without dead ends: 489 [2020-10-13 15:34:46,921 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 15:34:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-13 15:34:46,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 441. [2020-10-13 15:34:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-13 15:34:46,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 686 transitions. [2020-10-13 15:34:46,929 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 686 transitions. Word has length 123 [2020-10-13 15:34:46,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:46,929 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 686 transitions. [2020-10-13 15:34:46,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:46,930 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 686 transitions. [2020-10-13 15:34:46,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:34:46,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:46,931 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 15:34:46,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:34:46,931 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:46,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1924874404, now seen corresponding path program 1 times [2020-10-13 15:34:46,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:46,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105655380] [2020-10-13 15:34:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:47,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:47,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:47,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:47,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:34:47,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-13 15:34:47,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:34:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:47,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:47,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:47,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:47,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:47,922 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 15:34:47,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105655380] [2020-10-13 15:34:47,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:47,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:47,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609106822] [2020-10-13 15:34:47,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:47,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:47,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:47,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:47,923 INFO L87 Difference]: Start difference. First operand 441 states and 686 transitions. Second operand 5 states. [2020-10-13 15:34:48,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:48,579 INFO L93 Difference]: Finished difference Result 884 states and 1378 transitions. [2020-10-13 15:34:48,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:48,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:34:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:48,583 INFO L225 Difference]: With dead ends: 884 [2020-10-13 15:34:48,583 INFO L226 Difference]: Without dead ends: 468 [2020-10-13 15:34:48,584 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 15:34:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-10-13 15:34:48,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 441. [2020-10-13 15:34:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-13 15:34:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 685 transitions. [2020-10-13 15:34:48,591 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 685 transitions. Word has length 124 [2020-10-13 15:34:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:48,592 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 685 transitions. [2020-10-13 15:34:48,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 685 transitions. [2020-10-13 15:34:48,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:34:48,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:48,593 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 15:34:48,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:34:48,593 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:48,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:48,594 INFO L82 PathProgramCache]: Analyzing trace with hash 601980146, now seen corresponding path program 1 times [2020-10-13 15:34:48,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:48,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878982456] [2020-10-13 15:34:48,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-13 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:34:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:49,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:49,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:49,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:49,891 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 15:34:49,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878982456] [2020-10-13 15:34:49,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:49,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:49,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994078234] [2020-10-13 15:34:49,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:49,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:49,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:49,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:49,893 INFO L87 Difference]: Start difference. First operand 441 states and 685 transitions. Second operand 5 states. [2020-10-13 15:34:50,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:50,538 INFO L93 Difference]: Finished difference Result 882 states and 1374 transitions. [2020-10-13 15:34:50,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:50,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:34:50,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:50,542 INFO L225 Difference]: With dead ends: 882 [2020-10-13 15:34:50,542 INFO L226 Difference]: Without dead ends: 466 [2020-10-13 15:34:50,543 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 15:34:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-13 15:34:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 441. [2020-10-13 15:34:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-13 15:34:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 684 transitions. [2020-10-13 15:34:50,552 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 684 transitions. Word has length 125 [2020-10-13 15:34:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:50,553 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 684 transitions. [2020-10-13 15:34:50,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:50,553 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 684 transitions. [2020-10-13 15:34:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:34:50,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:50,554 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 15:34:50,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:34:50,554 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:50,555 INFO L82 PathProgramCache]: Analyzing trace with hash -745221751, now seen corresponding path program 1 times [2020-10-13 15:34:50,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:50,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508035648] [2020-10-13 15:34:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:50,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:51,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:34:51,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-13 15:34:51,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:34:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:34:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:51,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:51,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:51,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:51,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:51,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:51,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:51,081 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 15:34:51,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508035648] [2020-10-13 15:34:51,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:51,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:51,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389051018] [2020-10-13 15:34:51,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:51,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:51,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:51,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:51,083 INFO L87 Difference]: Start difference. First operand 441 states and 684 transitions. Second operand 5 states. [2020-10-13 15:34:51,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:51,702 INFO L93 Difference]: Finished difference Result 884 states and 1374 transitions. [2020-10-13 15:34:51,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:51,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:34:51,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:51,705 INFO L225 Difference]: With dead ends: 884 [2020-10-13 15:34:51,706 INFO L226 Difference]: Without dead ends: 468 [2020-10-13 15:34:51,706 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 15:34:51,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-10-13 15:34:51,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 441. [2020-10-13 15:34:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-13 15:34:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 683 transitions. [2020-10-13 15:34:51,713 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 683 transitions. Word has length 126 [2020-10-13 15:34:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:51,713 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 683 transitions. [2020-10-13 15:34:51,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 683 transitions. [2020-10-13 15:34:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:34:51,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:51,714 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, 1] [2020-10-13 15:34:51,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:34:51,714 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:51,715 INFO L82 PathProgramCache]: Analyzing trace with hash 98677216, now seen corresponding path program 1 times [2020-10-13 15:34:51,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:51,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320438395] [2020-10-13 15:34:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:56,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:34:56,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:56,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:34:56,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:56,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:56,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:34:56,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:34:56,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:56,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:56,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:56,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:56,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:56,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:56,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:56,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:56,809 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 15:34:56,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320438395] [2020-10-13 15:34:56,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:56,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:56,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644751439] [2020-10-13 15:34:56,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:56,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:56,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:56,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:56,810 INFO L87 Difference]: Start difference. First operand 441 states and 683 transitions. Second operand 5 states. [2020-10-13 15:34:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:57,421 INFO L93 Difference]: Finished difference Result 883 states and 1371 transitions. [2020-10-13 15:34:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:57,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:34:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:57,425 INFO L225 Difference]: With dead ends: 883 [2020-10-13 15:34:57,425 INFO L226 Difference]: Without dead ends: 467 [2020-10-13 15:34:57,426 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 15:34:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-10-13 15:34:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 441. [2020-10-13 15:34:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-13 15:34:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 682 transitions. [2020-10-13 15:34:57,433 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 682 transitions. Word has length 128 [2020-10-13 15:34:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:57,434 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 682 transitions. [2020-10-13 15:34:57,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 682 transitions. [2020-10-13 15:34:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:34:57,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:57,435 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, 1] [2020-10-13 15:34:57,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:34:57,435 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:57,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2026822540, now seen corresponding path program 1 times [2020-10-13 15:34:57,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:57,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376961001] [2020-10-13 15:34:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:02,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:35:02,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:35:02,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:35:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:02,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:02,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:02,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:02,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:02,524 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 15:35:02,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376961001] [2020-10-13 15:35:02,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:02,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:02,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088357277] [2020-10-13 15:35:02,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:02,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:02,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:02,525 INFO L87 Difference]: Start difference. First operand 441 states and 682 transitions. Second operand 5 states. [2020-10-13 15:35:03,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:03,147 INFO L93 Difference]: Finished difference Result 883 states and 1369 transitions. [2020-10-13 15:35:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:03,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:35:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:03,151 INFO L225 Difference]: With dead ends: 883 [2020-10-13 15:35:03,151 INFO L226 Difference]: Without dead ends: 467 [2020-10-13 15:35:03,152 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 15:35:03,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-10-13 15:35:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 441. [2020-10-13 15:35:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-13 15:35:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 681 transitions. [2020-10-13 15:35:03,159 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 681 transitions. Word has length 128 [2020-10-13 15:35:03,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:03,159 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 681 transitions. [2020-10-13 15:35:03,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 681 transitions. [2020-10-13 15:35:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:35:03,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:03,160 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, 1] [2020-10-13 15:35:03,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:35:03,160 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:03,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:03,161 INFO L82 PathProgramCache]: Analyzing trace with hash 509954607, now seen corresponding path program 1 times [2020-10-13 15:35:03,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:03,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652976309] [2020-10-13 15:35:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:03,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:03,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:35:03,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-13 15:35:03,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:35:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:03,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:03,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:03,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:03,937 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 15:35:03,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652976309] [2020-10-13 15:35:03,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:03,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:03,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741544087] [2020-10-13 15:35:03,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:03,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:03,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:03,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:03,938 INFO L87 Difference]: Start difference. First operand 441 states and 681 transitions. Second operand 5 states. [2020-10-13 15:35:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:04,609 INFO L93 Difference]: Finished difference Result 882 states and 1366 transitions. [2020-10-13 15:35:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:04,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:35:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:04,613 INFO L225 Difference]: With dead ends: 882 [2020-10-13 15:35:04,613 INFO L226 Difference]: Without dead ends: 466 [2020-10-13 15:35:04,613 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 15:35:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-13 15:35:04,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 441. [2020-10-13 15:35:04,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-13 15:35:04,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 680 transitions. [2020-10-13 15:35:04,620 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 680 transitions. Word has length 129 [2020-10-13 15:35:04,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:04,620 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 680 transitions. [2020-10-13 15:35:04,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 680 transitions. [2020-10-13 15:35:04,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:35:04,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:04,622 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, 1] [2020-10-13 15:35:04,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:35:04,622 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:04,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:04,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1077759741, now seen corresponding path program 1 times [2020-10-13 15:35:04,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:04,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696015458] [2020-10-13 15:35:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:05,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:09,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:35:09,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:09,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:35:09,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:09,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:09,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:09,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:09,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:09,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:09,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:09,713 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 15:35:09,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696015458] [2020-10-13 15:35:09,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:09,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:09,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305341753] [2020-10-13 15:35:09,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:09,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:09,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:09,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:09,714 INFO L87 Difference]: Start difference. First operand 441 states and 680 transitions. Second operand 5 states. [2020-10-13 15:35:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:10,322 INFO L93 Difference]: Finished difference Result 883 states and 1365 transitions. [2020-10-13 15:35:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:10,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:35:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:10,326 INFO L225 Difference]: With dead ends: 883 [2020-10-13 15:35:10,326 INFO L226 Difference]: Without dead ends: 467 [2020-10-13 15:35:10,327 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 15:35:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-10-13 15:35:10,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 441. [2020-10-13 15:35:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-13 15:35:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 679 transitions. [2020-10-13 15:35:10,334 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 679 transitions. Word has length 129 [2020-10-13 15:35:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:10,334 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 679 transitions. [2020-10-13 15:35:10,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 679 transitions. [2020-10-13 15:35:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:35:10,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:10,335 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, 1] [2020-10-13 15:35:10,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:35:10,335 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:10,336 INFO L82 PathProgramCache]: Analyzing trace with hash 965051129, now seen corresponding path program 1 times [2020-10-13 15:35:10,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:10,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352164043] [2020-10-13 15:35:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:10,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:11,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:11,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:35:11,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-13 15:35:11,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:11,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:35:11,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:11,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:11,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:11,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:11,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:11,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:11,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:11,468 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 15:35:11,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352164043] [2020-10-13 15:35:11,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:11,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:11,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625156766] [2020-10-13 15:35:11,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:11,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:11,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:11,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:11,469 INFO L87 Difference]: Start difference. First operand 441 states and 679 transitions. Second operand 5 states. [2020-10-13 15:35:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:12,108 INFO L93 Difference]: Finished difference Result 878 states and 1356 transitions. [2020-10-13 15:35:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:12,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 15:35:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:12,111 INFO L225 Difference]: With dead ends: 878 [2020-10-13 15:35:12,111 INFO L226 Difference]: Without dead ends: 462 [2020-10-13 15:35:12,112 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 15:35:12,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-13 15:35:12,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2020-10-13 15:35:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-13 15:35:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 678 transitions. [2020-10-13 15:35:12,119 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 678 transitions. Word has length 130 [2020-10-13 15:35:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:12,119 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 678 transitions. [2020-10-13 15:35:12,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 678 transitions. [2020-10-13 15:35:12,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:35:12,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:12,121 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, 1] [2020-10-13 15:35:12,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:35:12,121 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:12,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:12,121 INFO L82 PathProgramCache]: Analyzing trace with hash -350598375, now seen corresponding path program 1 times [2020-10-13 15:35:12,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:12,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140493237] [2020-10-13 15:35:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:12,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:17,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:17,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:35:17,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:35:17,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:35:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:17,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:17,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:17,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:17,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:17,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:17,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:17,208 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 15:35:17,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140493237] [2020-10-13 15:35:17,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:17,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:17,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710369639] [2020-10-13 15:35:17,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:17,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:17,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:17,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:17,210 INFO L87 Difference]: Start difference. First operand 441 states and 678 transitions. Second operand 5 states. [2020-10-13 15:35:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:17,839 INFO L93 Difference]: Finished difference Result 883 states and 1361 transitions. [2020-10-13 15:35:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:17,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 15:35:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:17,841 INFO L225 Difference]: With dead ends: 883 [2020-10-13 15:35:17,842 INFO L226 Difference]: Without dead ends: 467 [2020-10-13 15:35:17,842 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 15:35:17,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-10-13 15:35:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 441. [2020-10-13 15:35:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-13 15:35:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 677 transitions. [2020-10-13 15:35:17,848 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 677 transitions. Word has length 130 [2020-10-13 15:35:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:17,849 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 677 transitions. [2020-10-13 15:35:17,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 677 transitions. [2020-10-13 15:35:17,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:35:17,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:17,850 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 15:35:17,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:35:17,850 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:17,850 INFO L82 PathProgramCache]: Analyzing trace with hash -463391772, now seen corresponding path program 1 times [2020-10-13 15:35:17,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:17,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7513114] [2020-10-13 15:35:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:17,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:17,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:17,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 15:35:17,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:17,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 15:35:17,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:17,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:35:17,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 15:35:17,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:35:17,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:18,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:18,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:18,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:18,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:18,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:18,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7513114] [2020-10-13 15:35:18,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:18,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:35:18,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060524898] [2020-10-13 15:35:18,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:35:18,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:18,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:35:18,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:35:18,052 INFO L87 Difference]: Start difference. First operand 441 states and 677 transitions. Second operand 4 states. [2020-10-13 15:35:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:18,746 INFO L93 Difference]: Finished difference Result 1246 states and 1940 transitions. [2020-10-13 15:35:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:35:18,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-13 15:35:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:18,751 INFO L225 Difference]: With dead ends: 1246 [2020-10-13 15:35:18,751 INFO L226 Difference]: Without dead ends: 830 [2020-10-13 15:35:18,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:35:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-10-13 15:35:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 828. [2020-10-13 15:35:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-10-13 15:35:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1285 transitions. [2020-10-13 15:35:18,764 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1285 transitions. Word has length 131 [2020-10-13 15:35:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:18,765 INFO L479 AbstractCegarLoop]: Abstraction has 828 states and 1285 transitions. [2020-10-13 15:35:18,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:35:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1285 transitions. [2020-10-13 15:35:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:35:18,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:18,766 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 15:35:18,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:35:18,766 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:18,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:18,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1782187682, now seen corresponding path program 1 times [2020-10-13 15:35:18,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:18,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211217782] [2020-10-13 15:35:18,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:18,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:18,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 15:35:18,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 15:35:18,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:35:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 15:35:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:35:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:18,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:18,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:18,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:18,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:18,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211217782] [2020-10-13 15:35:18,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:18,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:35:18,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454957887] [2020-10-13 15:35:18,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:35:18,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:18,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:35:18,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:35:18,963 INFO L87 Difference]: Start difference. First operand 828 states and 1285 transitions. Second operand 4 states. [2020-10-13 15:35:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:19,468 INFO L93 Difference]: Finished difference Result 2016 states and 3153 transitions. [2020-10-13 15:35:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:35:19,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-13 15:35:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:19,474 INFO L225 Difference]: With dead ends: 2016 [2020-10-13 15:35:19,474 INFO L226 Difference]: Without dead ends: 1213 [2020-10-13 15:35:19,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:35:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-10-13 15:35:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2020-10-13 15:35:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-13 15:35:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1890 transitions. [2020-10-13 15:35:19,490 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1890 transitions. Word has length 131 [2020-10-13 15:35:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:19,490 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1890 transitions. [2020-10-13 15:35:19,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:35:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1890 transitions. [2020-10-13 15:35:19,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:35:19,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:19,492 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 15:35:19,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:35:19,493 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:19,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:19,493 INFO L82 PathProgramCache]: Analyzing trace with hash -799668706, now seen corresponding path program 1 times [2020-10-13 15:35:19,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:19,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764199855] [2020-10-13 15:35:19,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:19,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 15:35:19,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 15:35:19,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:35:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:35:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:19,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:19,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:19,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:19,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:19,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:19,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 15:35:19,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764199855] [2020-10-13 15:35:19,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:19,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:35:19,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835753197] [2020-10-13 15:35:19,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:35:19,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:19,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:35:19,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:35:19,654 INFO L87 Difference]: Start difference. First operand 1213 states and 1890 transitions. Second operand 4 states. [2020-10-13 15:35:20,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:20,024 INFO L93 Difference]: Finished difference Result 2016 states and 3142 transitions. [2020-10-13 15:35:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:35:20,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-13 15:35:20,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:20,029 INFO L225 Difference]: With dead ends: 2016 [2020-10-13 15:35:20,029 INFO L226 Difference]: Without dead ends: 828 [2020-10-13 15:35:20,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:35:20,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-10-13 15:35:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2020-10-13 15:35:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-10-13 15:35:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1279 transitions. [2020-10-13 15:35:20,044 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1279 transitions. Word has length 131 [2020-10-13 15:35:20,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:20,044 INFO L479 AbstractCegarLoop]: Abstraction has 828 states and 1279 transitions. [2020-10-13 15:35:20,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:35:20,044 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1279 transitions. [2020-10-13 15:35:20,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 15:35:20,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:20,046 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, 1] [2020-10-13 15:35:20,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:35:20,046 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:20,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:20,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1480243064, now seen corresponding path program 1 times [2020-10-13 15:35:20,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:20,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726443095] [2020-10-13 15:35:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 15:35:20,074 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 15:35:20,074 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 15:35:20,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 15:35:20,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 03:35:20 BoogieIcfgContainer [2020-10-13 15:35:20,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 15:35:20,116 INFO L168 Benchmark]: Toolchain (without parser) took 208752.27 ms. Allocated memory was 147.3 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 101.2 MB in the beginning and 979.3 MB in the end (delta: -878.1 MB). Peak memory consumption was 573.7 MB. Max. memory is 7.1 GB. [2020-10-13 15:35:20,116 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 15:35:20,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 852.36 ms. Allocated memory was 147.3 MB in the beginning and 206.0 MB in the end (delta: 58.7 MB). Free memory was 100.8 MB in the beginning and 165.9 MB in the end (delta: -65.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-10-13 15:35:20,117 INFO L168 Benchmark]: Boogie Preprocessor took 197.40 ms. Allocated memory is still 206.0 MB. Free memory was 165.9 MB in the beginning and 158.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. [2020-10-13 15:35:20,117 INFO L168 Benchmark]: RCFGBuilder took 1086.90 ms. Allocated memory was 206.0 MB in the beginning and 238.0 MB in the end (delta: 32.0 MB). Free memory was 158.2 MB in the beginning and 175.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. [2020-10-13 15:35:20,118 INFO L168 Benchmark]: TraceAbstraction took 206607.74 ms. Allocated memory was 238.0 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 175.6 MB in the beginning and 979.3 MB in the end (delta: -803.6 MB). Peak memory consumption was 557.4 MB. Max. memory is 7.1 GB. [2020-10-13 15:35:20,120 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 852.36 ms. Allocated memory was 147.3 MB in the beginning and 206.0 MB in the end (delta: 58.7 MB). Free memory was 100.8 MB in the beginning and 165.9 MB in the end (delta: -65.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 197.40 ms. Allocated memory is still 206.0 MB. Free memory was 165.9 MB in the beginning and 158.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1086.90 ms. Allocated memory was 206.0 MB in the beginning and 238.0 MB in the end (delta: 32.0 MB). Free memory was 158.2 MB in the beginning and 175.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206607.74 ms. Allocated memory was 238.0 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 175.6 MB in the beginning and 979.3 MB in the end (delta: -803.6 MB). Peak memory consumption was 557.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1706]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1120. 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 = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1082] unsigned long l ; [L1083] unsigned long Time ; [L1084] unsigned long tmp = __VERIFIER_nondet_long() ; [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 ; [L1095] int tmp___4 ; [L1096] int tmp___5 ; [L1097] int tmp___6 ; [L1098] int tmp___7 ; [L1099] long tmp___8 = __VERIFIER_nondet_long() ; [L1100] int tmp___9 ; [L1101] int tmp___10 ; [L1102] int blastFlag ; [L1106] blastFlag = 0 [L1107] s->hit=__VERIFIER_nondet_int () [L1108] s->state = 8464 [L1109] Time = tmp [L1110] cb = (void (*)())((void *)0) [L1111] ret = -1 [L1112] skip = 0 [L1113] got_new_session = 0 [L1114] EXPR s->info_callback [L1114] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1115] EXPR s->info_callback [L1115] cb = s->info_callback [L1119] EXPR s->in_handshake [L1119] s->in_handshake += 1 [L1120] COND FALSE !(tmp___1 & 12288) [L1129] EXPR s->cert [L1129] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1135] COND TRUE 1 [L1137] EXPR s->state [L1137] state = s->state [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 12292) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 16384) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 8192) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 24576) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 8195) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 8480) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 8481) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 8482) [L1162] EXPR s->state [L1162] COND TRUE s->state == 8464 [L1318] s->shutdown = 0 [L1319] ret = __VERIFIER_nondet_int() [L1320] COND TRUE blastFlag == 0 [L1321] blastFlag = 1 [L1325] COND FALSE !(ret <= 0) [L1330] got_new_session = 1 [L1331] s->state = 8496 [L1332] s->init_num = 0 [L1665] EXPR s->s3 [L1665] EXPR (s->s3)->tmp.reuse_message [L1665] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1694] skip = 0 [L1135] COND TRUE 1 [L1137] EXPR s->state [L1137] state = s->state [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 12292) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 16384) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 8192) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 24576) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 8195) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 8480) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 8481) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 8482) [L1162] EXPR s->state [L1162] COND FALSE !(s->state == 8464) [L1165] EXPR s->state [L1165] COND FALSE !(s->state == 8465) [L1168] EXPR s->state [L1168] COND FALSE !(s->state == 8466) [L1171] EXPR s->state [L1171] COND TRUE s->state == 8496 [L1336] ret = __VERIFIER_nondet_int() [L1337] COND TRUE blastFlag == 1 [L1338] blastFlag = 2 [L1342] COND FALSE !(ret <= 0) [L1347] s->hit [L1347] COND TRUE s->hit [L1348] s->state = 8656 [L1352] s->init_num = 0 [L1665] EXPR s->s3 [L1665] EXPR (s->s3)->tmp.reuse_message [L1665] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1694] skip = 0 [L1135] COND TRUE 1 [L1137] EXPR s->state [L1137] state = s->state [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 12292) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 16384) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 8192) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 24576) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 8195) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 8480) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 8481) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 8482) [L1162] EXPR s->state [L1162] COND FALSE !(s->state == 8464) [L1165] EXPR s->state [L1165] COND FALSE !(s->state == 8465) [L1168] EXPR s->state [L1168] COND FALSE !(s->state == 8466) [L1171] EXPR s->state [L1171] COND FALSE !(s->state == 8496) [L1174] EXPR s->state [L1174] COND FALSE !(s->state == 8497) [L1177] EXPR s->state [L1177] COND FALSE !(s->state == 8512) [L1180] EXPR s->state [L1180] COND FALSE !(s->state == 8513) [L1183] EXPR s->state [L1183] COND FALSE !(s->state == 8528) [L1186] EXPR s->state [L1186] COND FALSE !(s->state == 8529) [L1189] EXPR s->state [L1189] COND FALSE !(s->state == 8544) [L1192] EXPR s->state [L1192] COND FALSE !(s->state == 8545) [L1195] EXPR s->state [L1195] COND FALSE !(s->state == 8560) [L1198] EXPR s->state [L1198] COND FALSE !(s->state == 8561) [L1201] EXPR s->state [L1201] COND FALSE !(s->state == 8448) [L1204] EXPR s->state [L1204] COND FALSE !(s->state == 8576) [L1207] EXPR s->state [L1207] COND FALSE !(s->state == 8577) [L1210] EXPR s->state [L1210] COND FALSE !(s->state == 8592) [L1213] EXPR s->state [L1213] COND FALSE !(s->state == 8593) [L1216] EXPR s->state [L1216] COND FALSE !(s->state == 8608) [L1219] EXPR s->state [L1219] COND FALSE !(s->state == 8609) [L1222] EXPR s->state [L1222] COND FALSE !(s->state == 8640) [L1225] EXPR s->state [L1225] COND FALSE !(s->state == 8641) [L1228] EXPR s->state [L1228] COND TRUE s->state == 8656 [L1552] EXPR s->session [L1552] EXPR s->s3 [L1552] EXPR (s->s3)->tmp.new_cipher [L1552] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1553] tmp___9 = __VERIFIER_nondet_int() [L1554] COND FALSE !(! tmp___9) [L1560] ret = __VERIFIER_nondet_int() [L1561] COND TRUE blastFlag == 2 [L1562] blastFlag = 5 [L1566] COND FALSE !(ret <= 0) [L1571] s->state = 8672 [L1572] s->init_num = 0 [L1573] tmp___10 = __VERIFIER_nondet_int() [L1574] COND FALSE !(! tmp___10) [L1665] EXPR s->s3 [L1665] EXPR (s->s3)->tmp.reuse_message [L1665] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1694] skip = 0 [L1135] COND TRUE 1 [L1137] EXPR s->state [L1137] state = s->state [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 12292) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 16384) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 8192) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 24576) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 8195) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 8480) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 8481) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 8482) [L1162] EXPR s->state [L1162] COND FALSE !(s->state == 8464) [L1165] EXPR s->state [L1165] COND FALSE !(s->state == 8465) [L1168] EXPR s->state [L1168] COND FALSE !(s->state == 8466) [L1171] EXPR s->state [L1171] COND FALSE !(s->state == 8496) [L1174] EXPR s->state [L1174] COND FALSE !(s->state == 8497) [L1177] EXPR s->state [L1177] COND FALSE !(s->state == 8512) [L1180] EXPR s->state [L1180] COND FALSE !(s->state == 8513) [L1183] EXPR s->state [L1183] COND FALSE !(s->state == 8528) [L1186] EXPR s->state [L1186] COND FALSE !(s->state == 8529) [L1189] EXPR s->state [L1189] COND FALSE !(s->state == 8544) [L1192] EXPR s->state [L1192] COND FALSE !(s->state == 8545) [L1195] EXPR s->state [L1195] COND FALSE !(s->state == 8560) [L1198] EXPR s->state [L1198] COND FALSE !(s->state == 8561) [L1201] EXPR s->state [L1201] COND FALSE !(s->state == 8448) [L1204] EXPR s->state [L1204] COND FALSE !(s->state == 8576) [L1207] EXPR s->state [L1207] COND FALSE !(s->state == 8577) [L1210] EXPR s->state [L1210] COND FALSE !(s->state == 8592) [L1213] EXPR s->state [L1213] COND FALSE !(s->state == 8593) [L1216] EXPR s->state [L1216] COND FALSE !(s->state == 8608) [L1219] EXPR s->state [L1219] COND FALSE !(s->state == 8609) [L1222] EXPR s->state [L1222] COND FALSE !(s->state == 8640) [L1225] EXPR s->state [L1225] COND FALSE !(s->state == 8641) [L1228] EXPR s->state [L1228] COND FALSE !(s->state == 8656) [L1231] EXPR s->state [L1231] COND FALSE !(s->state == 8657) [L1234] EXPR s->state [L1234] COND TRUE s->state == 8672 [L1583] ret = __VERIFIER_nondet_int() [L1584] COND FALSE !(blastFlag == 4) [L1587] COND TRUE blastFlag == 5 [L1706] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 182 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 206.5s, OverallIterations: 66, TraceHistogramMax: 5, AutomataDifference: 42.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13261 SDtfs, 3641 SDslu, 19790 SDs, 0 SdLazy, 28418 SolverSat, 699 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 495 GetRequests, 195 SyntacticMatches, 44 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1213occurred in iteration=64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 65 MinimizatonAttempts, 1858 StatesRemovedByMinimization, 62 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 160.2s InterpolantComputationTime, 6754 NumberOfCodeBlocks, 6754 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 6557 ConstructedInterpolants, 0 QuantifiedInterpolants, 2104003 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 65 InterpolantComputations, 65 PerfectInterpolantSequences, 4027/4027 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...