/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.11.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:35:53,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:35:53,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:35:53,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:35:53,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:35:53,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:35:53,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:35:53,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:35:53,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:35:53,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:35:53,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:35:53,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:35:53,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:35:53,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:35:53,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:35:53,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:35:53,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:35:53,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:35:53,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:35:53,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:35:53,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:35:53,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:35:53,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:35:53,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:35:53,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:35:53,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:35:53,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:35:53,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:35:53,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:35:53,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:35:53,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:35:53,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:35:53,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:35:53,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:35:53,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:35:53,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:35:53,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:35:53,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:35:53,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:35:53,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:35:53,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:35:53,382 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 15:35:53,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:35:53,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:35:53,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:35:53,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:35:53,422 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:35:53,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:35:53,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:35:53,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:35:53,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:35:53,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:35:53,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:35:53,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:35:53,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:35:53,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:35:53,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:35:53,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:35:53,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:35:53,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:35:53,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:35:53,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:35:53,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:35:53,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:35:53,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:35:53,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:35:53,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:35:53,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:35:53,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:35:53,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:35:53,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:35:53,429 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 15:35:53,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:35:53,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:35:53,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:35:53,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:35:53,756 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:35:53,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-1.c [2020-10-13 15:35:53,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a85cf499e/ac98f008029944d1b6492c44ca483b4a/FLAGb509b8ae1 [2020-10-13 15:35:54,414 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:35:54,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.11.i.cil-1.c [2020-10-13 15:35:54,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a85cf499e/ac98f008029944d1b6492c44ca483b4a/FLAGb509b8ae1 [2020-10-13 15:35:54,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a85cf499e/ac98f008029944d1b6492c44ca483b4a [2020-10-13 15:35:54,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:35:54,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:35:54,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:35:54,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:35:54,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:35:54,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:35:54" (1/1) ... [2020-10-13 15:35:54,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c10b60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:54, skipping insertion in model container [2020-10-13 15:35:54,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:35:54" (1/1) ... [2020-10-13 15:35:54,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:35:54,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:35:55,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:35:55,363 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:35:55,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:35:55,569 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:35:55,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:55 WrapperNode [2020-10-13 15:35:55,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:35:55,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:35:55,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:35:55,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:35:55,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:55" (1/1) ... [2020-10-13 15:35:55,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:55" (1/1) ... [2020-10-13 15:35:55,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:55" (1/1) ... [2020-10-13 15:35:55,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:55" (1/1) ... [2020-10-13 15:35:55,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:55" (1/1) ... [2020-10-13 15:35:55,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:55" (1/1) ... [2020-10-13 15:35:55,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:55" (1/1) ... [2020-10-13 15:35:55,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:35:55,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:35:55,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:35:55,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:35:55,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:55" (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 15:35:55,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:35:55,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:35:55,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:35:55,836 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:35:55,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:35:55,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:35:55,837 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:35:55,837 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:35:55,837 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:35:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:35:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:35:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:35:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:35:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:35:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:35:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:35:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:35:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:35:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:35:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:35:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:35:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:35:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:35:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:35:55,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:35:55,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:35:55,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:35:55,842 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:35:55,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:35:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:35:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:35:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:35:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:35:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:35:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:35:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:35:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:35:56,450 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:35:57,165 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:35:57,165 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:35:57,192 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:35:57,192 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:35:57,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:35:57 BoogieIcfgContainer [2020-10-13 15:35:57,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:35:57,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:35:57,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:35:57,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:35:57,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:35:54" (1/3) ... [2020-10-13 15:35:57,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a3ea2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:35:57, skipping insertion in model container [2020-10-13 15:35:57,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:55" (2/3) ... [2020-10-13 15:35:57,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a3ea2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:35:57, skipping insertion in model container [2020-10-13 15:35:57,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:35:57" (3/3) ... [2020-10-13 15:35:57,206 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-1.c [2020-10-13 15:35:57,217 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:35:57,225 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:35:57,240 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:35:57,267 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:35:57,268 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:35:57,268 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:35:57,268 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:35:57,268 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:35:57,268 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:35:57,268 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:35:57,268 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:35:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-13 15:35:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 15:35:57,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:57,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:57,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:57,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:57,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1765903298, now seen corresponding path program 1 times [2020-10-13 15:35:57,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:57,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317859645] [2020-10-13 15:35:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:57,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:59,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 15:35:59,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:59,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-10-13 15:35:59,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:35:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:35:59,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:59,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:59,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:59,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:59,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:59,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:59,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:59,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:59,214 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 15:35:59,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317859645] [2020-10-13 15:35:59,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:59,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:59,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973420443] [2020-10-13 15:35:59,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:59,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:59,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:59,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:59,242 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 5 states. [2020-10-13 15:36:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:00,189 INFO L93 Difference]: Finished difference Result 333 states and 558 transitions. [2020-10-13 15:36:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:00,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-13 15:36:00,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:00,206 INFO L225 Difference]: With dead ends: 333 [2020-10-13 15:36:00,206 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:36:00,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:00,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:36:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:36:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:36:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 232 transitions. [2020-10-13 15:36:00,270 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 232 transitions. Word has length 41 [2020-10-13 15:36:00,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:00,271 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 232 transitions. [2020-10-13 15:36:00,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 232 transitions. [2020-10-13 15:36:00,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 15:36:00,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:00,274 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] [2020-10-13 15:36:00,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:36:00,275 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:00,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1703145427, now seen corresponding path program 1 times [2020-10-13 15:36:00,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:00,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520245040] [2020-10-13 15:36:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:01,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 15:36:01,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-13 15:36:01,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:01,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:36:01,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:01,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:01,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:01,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:36:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:01,181 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 15:36:01,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520245040] [2020-10-13 15:36:01,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:01,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:01,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859117232] [2020-10-13 15:36:01,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:01,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:01,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:01,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:01,186 INFO L87 Difference]: Start difference. First operand 152 states and 232 transitions. Second operand 5 states. [2020-10-13 15:36:01,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:01,974 INFO L93 Difference]: Finished difference Result 296 states and 449 transitions. [2020-10-13 15:36:01,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:01,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 15:36:01,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:01,980 INFO L225 Difference]: With dead ends: 296 [2020-10-13 15:36:01,980 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:36:01,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:01,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:36:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:36:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:36:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2020-10-13 15:36:02,011 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 54 [2020-10-13 15:36:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:02,012 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2020-10-13 15:36:02,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:02,015 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2020-10-13 15:36:02,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:36:02,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:02,019 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] [2020-10-13 15:36:02,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:36:02,020 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:02,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1599562843, now seen corresponding path program 1 times [2020-10-13 15:36:02,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:02,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391785763] [2020-10-13 15:36:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:03,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:07,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:07,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:36:07,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:07,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:36:07,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:07,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:07,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:07,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:07,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:07,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:07,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:36:07,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:07,168 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 15:36:07,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391785763] [2020-10-13 15:36:07,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:07,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:07,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369146709] [2020-10-13 15:36:07,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:07,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:07,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:07,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:07,171 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand 5 states. [2020-10-13 15:36:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:07,936 INFO L93 Difference]: Finished difference Result 295 states and 447 transitions. [2020-10-13 15:36:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:07,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:36:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:07,939 INFO L225 Difference]: With dead ends: 295 [2020-10-13 15:36:07,941 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 15:36:07,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:07,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 15:36:07,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2020-10-13 15:36:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:36:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2020-10-13 15:36:07,968 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 55 [2020-10-13 15:36:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:07,969 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2020-10-13 15:36:07,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2020-10-13 15:36:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:36:07,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:07,976 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] [2020-10-13 15:36:07,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:36:07,976 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:07,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1829825297, now seen corresponding path program 1 times [2020-10-13 15:36:07,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:07,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108974632] [2020-10-13 15:36:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:10,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:13,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:36:13,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:36:13,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 15:36:13,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:36:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:13,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:13,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:13,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:13,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:13,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:13,142 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 15:36:13,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108974632] [2020-10-13 15:36:13,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:13,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:13,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048445919] [2020-10-13 15:36:13,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:13,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:13,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:13,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:13,146 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 6 states. [2020-10-13 15:36:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:13,781 INFO L93 Difference]: Finished difference Result 289 states and 439 transitions. [2020-10-13 15:36:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:36:13,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-13 15:36:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:13,784 INFO L225 Difference]: With dead ends: 289 [2020-10-13 15:36:13,784 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 15:36:13,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:36:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 15:36:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-13 15:36:13,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:36:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 241 transitions. [2020-10-13 15:36:13,815 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 241 transitions. Word has length 55 [2020-10-13 15:36:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:13,816 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 241 transitions. [2020-10-13 15:36:13,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 241 transitions. [2020-10-13 15:36:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:36:13,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:13,822 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] [2020-10-13 15:36:13,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:36:13,823 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:13,824 INFO L82 PathProgramCache]: Analyzing trace with hash -667714460, now seen corresponding path program 1 times [2020-10-13 15:36:13,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:13,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710371065] [2020-10-13 15:36:13,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:14,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:36:14,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-13 15:36:14,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:36:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:36:14,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:14,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:14,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:14,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:36:14,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:14,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:14,571 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 15:36:14,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710371065] [2020-10-13 15:36:14,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:14,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:14,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952608115] [2020-10-13 15:36:14,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:14,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:14,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:14,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:14,575 INFO L87 Difference]: Start difference. First operand 161 states and 241 transitions. Second operand 5 states. [2020-10-13 15:36:15,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:15,259 INFO L93 Difference]: Finished difference Result 320 states and 477 transitions. [2020-10-13 15:36:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:15,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:36:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:15,262 INFO L225 Difference]: With dead ends: 320 [2020-10-13 15:36:15,262 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 15:36:15,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 15:36:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 161. [2020-10-13 15:36:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:36:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 240 transitions. [2020-10-13 15:36:15,284 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 240 transitions. Word has length 55 [2020-10-13 15:36:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:15,284 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 240 transitions. [2020-10-13 15:36:15,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 240 transitions. [2020-10-13 15:36:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:36:15,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:15,290 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] [2020-10-13 15:36:15,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:36:15,290 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:15,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:15,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1983721381, now seen corresponding path program 1 times [2020-10-13 15:36:15,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:15,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77922543] [2020-10-13 15:36:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:15,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:15,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:36:15,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-13 15:36:15,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:36:15,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:15,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:15,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:15,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:15,859 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 15:36:15,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77922543] [2020-10-13 15:36:15,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:15,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:15,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98130510] [2020-10-13 15:36:15,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:15,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:15,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:15,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:15,861 INFO L87 Difference]: Start difference. First operand 161 states and 240 transitions. Second operand 5 states. [2020-10-13 15:36:16,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:16,541 INFO L93 Difference]: Finished difference Result 319 states and 475 transitions. [2020-10-13 15:36:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:16,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:36:16,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:16,543 INFO L225 Difference]: With dead ends: 319 [2020-10-13 15:36:16,543 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 15:36:16,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 15:36:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2020-10-13 15:36:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:36:16,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 239 transitions. [2020-10-13 15:36:16,551 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 239 transitions. Word has length 55 [2020-10-13 15:36:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:16,552 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 239 transitions. [2020-10-13 15:36:16,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 239 transitions. [2020-10-13 15:36:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 15:36:16,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:16,553 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] [2020-10-13 15:36:16,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:36:16,553 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:16,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:16,554 INFO L82 PathProgramCache]: Analyzing trace with hash 347904974, now seen corresponding path program 1 times [2020-10-13 15:36:16,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:16,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841330774] [2020-10-13 15:36:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:21,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:21,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 15:36:21,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:21,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 15:36:21,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:21,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:21,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:21,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:21,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:21,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:36:21,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:21,713 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 15:36:21,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841330774] [2020-10-13 15:36:21,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:21,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:21,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127463015] [2020-10-13 15:36:21,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:21,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:21,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:21,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:21,724 INFO L87 Difference]: Start difference. First operand 161 states and 239 transitions. Second operand 5 states. [2020-10-13 15:36:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:22,397 INFO L93 Difference]: Finished difference Result 310 states and 463 transitions. [2020-10-13 15:36:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:22,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-13 15:36:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:22,401 INFO L225 Difference]: With dead ends: 310 [2020-10-13 15:36:22,401 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 15:36:22,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 15:36:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 161. [2020-10-13 15:36:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:36:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 238 transitions. [2020-10-13 15:36:22,409 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 238 transitions. Word has length 56 [2020-10-13 15:36:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:22,410 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 238 transitions. [2020-10-13 15:36:22,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:22,410 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 238 transitions. [2020-10-13 15:36:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 15:36:22,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:22,413 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] [2020-10-13 15:36:22,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:36:22,414 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:22,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:22,414 INFO L82 PathProgramCache]: Analyzing trace with hash -439021250, now seen corresponding path program 1 times [2020-10-13 15:36:22,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:22,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099547186] [2020-10-13 15:36:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:27,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 15:36:27,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:36:27,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:36:27,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:36:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:27,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:27,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:27,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:36:27,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:27,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:27,544 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 15:36:27,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099547186] [2020-10-13 15:36:27,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:27,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:27,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265095090] [2020-10-13 15:36:27,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:27,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:27,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:27,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:27,548 INFO L87 Difference]: Start difference. First operand 161 states and 238 transitions. Second operand 6 states. [2020-10-13 15:36:29,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:29,043 INFO L93 Difference]: Finished difference Result 426 states and 643 transitions. [2020-10-13 15:36:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:36:29,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 15:36:29,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:29,046 INFO L225 Difference]: With dead ends: 426 [2020-10-13 15:36:29,046 INFO L226 Difference]: Without dead ends: 290 [2020-10-13 15:36:29,047 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 15:36:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-13 15:36:29,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 178. [2020-10-13 15:36:29,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:36:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 265 transitions. [2020-10-13 15:36:29,056 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 265 transitions. Word has length 56 [2020-10-13 15:36:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:29,057 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 265 transitions. [2020-10-13 15:36:29,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 265 transitions. [2020-10-13 15:36:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:36:29,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:29,058 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] [2020-10-13 15:36:29,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:36:29,058 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:29,059 INFO L82 PathProgramCache]: Analyzing trace with hash 513157471, now seen corresponding path program 1 times [2020-10-13 15:36:29,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:29,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575375896] [2020-10-13 15:36:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:33,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 15:36:33,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4806 [2020-10-13 15:36:33,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:33,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:33,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:33,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:33,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:33,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:33,949 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 15:36:33,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575375896] [2020-10-13 15:36:33,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:33,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:33,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666664531] [2020-10-13 15:36:33,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:33,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:33,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:33,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:33,951 INFO L87 Difference]: Start difference. First operand 178 states and 265 transitions. Second operand 5 states. [2020-10-13 15:36:34,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:34,668 INFO L93 Difference]: Finished difference Result 344 states and 516 transitions. [2020-10-13 15:36:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:34,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-13 15:36:34,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:34,671 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:36:34,671 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:36:34,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:36:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2020-10-13 15:36:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:36:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 264 transitions. [2020-10-13 15:36:34,684 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 264 transitions. Word has length 57 [2020-10-13 15:36:34,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:34,684 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 264 transitions. [2020-10-13 15:36:34,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 264 transitions. [2020-10-13 15:36:34,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:36:34,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:34,685 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] [2020-10-13 15:36:34,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:36:34,685 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:34,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:34,686 INFO L82 PathProgramCache]: Analyzing trace with hash -592219372, now seen corresponding path program 1 times [2020-10-13 15:36:34,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:34,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69907044] [2020-10-13 15:36:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:34,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:39,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:39,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 15:36:39,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:36:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:36:39,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:36:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:39,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:39,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:39,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:39,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:39,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:39,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:39,781 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 15:36:39,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69907044] [2020-10-13 15:36:39,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:39,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:39,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224325378] [2020-10-13 15:36:39,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:39,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:39,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:39,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:39,784 INFO L87 Difference]: Start difference. First operand 178 states and 264 transitions. Second operand 6 states. [2020-10-13 15:36:40,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:40,439 INFO L93 Difference]: Finished difference Result 350 states and 522 transitions. [2020-10-13 15:36:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:36:40,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 15:36:40,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:40,442 INFO L225 Difference]: With dead ends: 350 [2020-10-13 15:36:40,442 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 15:36:40,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:36:40,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 15:36:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 178. [2020-10-13 15:36:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:36:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 264 transitions. [2020-10-13 15:36:40,450 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 264 transitions. Word has length 57 [2020-10-13 15:36:40,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:40,451 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 264 transitions. [2020-10-13 15:36:40,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 264 transitions. [2020-10-13 15:36:40,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:36:40,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:40,452 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] [2020-10-13 15:36:40,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:36:40,453 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:40,453 INFO L82 PathProgramCache]: Analyzing trace with hash 58982985, now seen corresponding path program 1 times [2020-10-13 15:36:40,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:40,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598794064] [2020-10-13 15:36:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:43,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:36:43,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:43,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3394 [2020-10-13 15:36:43,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:43,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:43,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:43,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:43,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:43,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:43,927 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 15:36:43,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598794064] [2020-10-13 15:36:43,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:43,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:43,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21748542] [2020-10-13 15:36:43,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:43,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:43,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:43,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:43,929 INFO L87 Difference]: Start difference. First operand 178 states and 264 transitions. Second operand 5 states. [2020-10-13 15:36:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:44,535 INFO L93 Difference]: Finished difference Result 344 states and 515 transitions. [2020-10-13 15:36:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:44,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 15:36:44,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:44,538 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:36:44,538 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:36:44,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:44,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:36:44,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2020-10-13 15:36:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:36:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 263 transitions. [2020-10-13 15:36:44,551 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 263 transitions. Word has length 58 [2020-10-13 15:36:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:44,551 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 263 transitions. [2020-10-13 15:36:44,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:44,552 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 263 transitions. [2020-10-13 15:36:44,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:36:44,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:44,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:44,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:36:44,555 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:44,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:44,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1238454678, now seen corresponding path program 1 times [2020-10-13 15:36:44,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:44,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310027251] [2020-10-13 15:36:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:44,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:44,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:44,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:36:44,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-13 15:36:44,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:36:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:44,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:44,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:44,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:44,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:44,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:44,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:44,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:44,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:44,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:44,972 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 15:36:44,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310027251] [2020-10-13 15:36:44,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:44,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:44,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376219441] [2020-10-13 15:36:44,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:44,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:44,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:44,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:44,974 INFO L87 Difference]: Start difference. First operand 178 states and 263 transitions. Second operand 5 states. [2020-10-13 15:36:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:45,616 INFO L93 Difference]: Finished difference Result 383 states and 574 transitions. [2020-10-13 15:36:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:45,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 15:36:45,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:45,619 INFO L225 Difference]: With dead ends: 383 [2020-10-13 15:36:45,620 INFO L226 Difference]: Without dead ends: 230 [2020-10-13 15:36:45,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:45,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-13 15:36:45,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 200. [2020-10-13 15:36:45,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-13 15:36:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 301 transitions. [2020-10-13 15:36:45,628 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 301 transitions. Word has length 58 [2020-10-13 15:36:45,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:45,628 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 301 transitions. [2020-10-13 15:36:45,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:45,628 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 301 transitions. [2020-10-13 15:36:45,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:36:45,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:45,629 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] [2020-10-13 15:36:45,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:36:45,630 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:45,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:45,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1364844477, now seen corresponding path program 1 times [2020-10-13 15:36:45,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:45,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940985502] [2020-10-13 15:36:45,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:50,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:50,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:36:50,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:36:50,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:36:50,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:36:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:50,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:50,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:50,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:50,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:50,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:50,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:50,731 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 15:36:50,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940985502] [2020-10-13 15:36:50,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:50,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:50,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488209889] [2020-10-13 15:36:50,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:50,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:50,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:50,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:50,733 INFO L87 Difference]: Start difference. First operand 200 states and 301 transitions. Second operand 6 states. [2020-10-13 15:36:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:51,901 INFO L93 Difference]: Finished difference Result 487 states and 744 transitions. [2020-10-13 15:36:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:36:51,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 15:36:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:51,905 INFO L225 Difference]: With dead ends: 487 [2020-10-13 15:36:51,905 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:36:51,906 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 15:36:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:36:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 196. [2020-10-13 15:36:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 293 transitions. [2020-10-13 15:36:51,913 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 293 transitions. Word has length 58 [2020-10-13 15:36:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:51,913 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 293 transitions. [2020-10-13 15:36:51,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 293 transitions. [2020-10-13 15:36:51,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 15:36:51,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:51,914 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] [2020-10-13 15:36:51,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:36:51,915 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:51,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:51,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1877408506, now seen corresponding path program 1 times [2020-10-13 15:36:51,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:51,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774370020] [2020-10-13 15:36:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:51,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:55,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:55,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 15:36:55,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:55,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3465 [2020-10-13 15:36:55,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:36:55,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:55,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:55,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:55,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:55,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:55,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:55,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:55,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:55,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:55,448 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 15:36:55,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774370020] [2020-10-13 15:36:55,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:55,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:55,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547964186] [2020-10-13 15:36:55,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:55,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:55,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:55,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:55,450 INFO L87 Difference]: Start difference. First operand 196 states and 293 transitions. Second operand 5 states. [2020-10-13 15:36:55,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:55,994 INFO L93 Difference]: Finished difference Result 370 states and 561 transitions. [2020-10-13 15:36:55,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:55,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-13 15:36:55,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:55,997 INFO L225 Difference]: With dead ends: 370 [2020-10-13 15:36:55,997 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 15:36:55,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 15:36:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2020-10-13 15:36:56,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 292 transitions. [2020-10-13 15:36:56,014 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 292 transitions. Word has length 59 [2020-10-13 15:36:56,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:56,016 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 292 transitions. [2020-10-13 15:36:56,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:56,017 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 292 transitions. [2020-10-13 15:36:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 15:36:56,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:56,019 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] [2020-10-13 15:36:56,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:36:56,019 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:56,019 INFO L82 PathProgramCache]: Analyzing trace with hash -304046809, now seen corresponding path program 1 times [2020-10-13 15:36:56,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:56,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745804833] [2020-10-13 15:36:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:56,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:36:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-13 15:36:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:56,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:56,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:56,527 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 15:36:56,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745804833] [2020-10-13 15:36:56,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:56,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:56,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431885544] [2020-10-13 15:36:56,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:56,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:56,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:56,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:56,529 INFO L87 Difference]: Start difference. First operand 196 states and 292 transitions. Second operand 5 states. [2020-10-13 15:36:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:57,110 INFO L93 Difference]: Finished difference Result 397 states and 594 transitions. [2020-10-13 15:36:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:57,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-13 15:36:57,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:57,113 INFO L225 Difference]: With dead ends: 397 [2020-10-13 15:36:57,113 INFO L226 Difference]: Without dead ends: 226 [2020-10-13 15:36:57,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-13 15:36:57,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2020-10-13 15:36:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:57,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 291 transitions. [2020-10-13 15:36:57,124 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 291 transitions. Word has length 71 [2020-10-13 15:36:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:57,125 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 291 transitions. [2020-10-13 15:36:57,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 291 transitions. [2020-10-13 15:36:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:36:57,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:57,126 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] [2020-10-13 15:36:57,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:36:57,126 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:57,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:57,127 INFO L82 PathProgramCache]: Analyzing trace with hash -493854329, now seen corresponding path program 1 times [2020-10-13 15:36:57,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:57,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426451307] [2020-10-13 15:36:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:02,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:37:02,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:37:02,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:37:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:02,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:02,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:02,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:02,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:02,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:02,212 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 15:37:02,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426451307] [2020-10-13 15:37:02,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:02,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:02,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091160167] [2020-10-13 15:37:02,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:02,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:02,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:02,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:02,214 INFO L87 Difference]: Start difference. First operand 196 states and 291 transitions. Second operand 5 states. [2020-10-13 15:37:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:02,780 INFO L93 Difference]: Finished difference Result 387 states and 579 transitions. [2020-10-13 15:37:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:02,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:37:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:02,783 INFO L225 Difference]: With dead ends: 387 [2020-10-13 15:37:02,783 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:37:02,784 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 15:37:02,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:37:02,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 196. [2020-10-13 15:37:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:37:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 290 transitions. [2020-10-13 15:37:02,792 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 290 transitions. Word has length 72 [2020-10-13 15:37:02,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:02,792 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 290 transitions. [2020-10-13 15:37:02,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 290 transitions. [2020-10-13 15:37:02,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:37:02,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:02,794 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] [2020-10-13 15:37:02,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:37:02,794 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:02,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:02,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1533835664, now seen corresponding path program 1 times [2020-10-13 15:37:02,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:02,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381994688] [2020-10-13 15:37:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:02,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:03,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:37:03,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:03,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-13 15:37:03,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:03,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:03,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:03,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:03,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:03,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:03,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:03,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:03,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:03,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:03,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:03,297 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 15:37:03,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381994688] [2020-10-13 15:37:03,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:03,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:03,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942850319] [2020-10-13 15:37:03,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:03,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:03,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:03,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:03,299 INFO L87 Difference]: Start difference. First operand 196 states and 290 transitions. Second operand 5 states. [2020-10-13 15:37:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:03,858 INFO L93 Difference]: Finished difference Result 385 states and 575 transitions. [2020-10-13 15:37:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:03,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:37:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:03,860 INFO L225 Difference]: With dead ends: 385 [2020-10-13 15:37:03,860 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:37:03,861 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 15:37:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:37:03,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2020-10-13 15:37:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:37:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 289 transitions. [2020-10-13 15:37:03,873 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 289 transitions. Word has length 72 [2020-10-13 15:37:03,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:03,873 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 289 transitions. [2020-10-13 15:37:03,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 289 transitions. [2020-10-13 15:37:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:37:03,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:03,875 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] [2020-10-13 15:37:03,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:37:03,875 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:03,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:03,876 INFO L82 PathProgramCache]: Analyzing trace with hash -109695791, now seen corresponding path program 1 times [2020-10-13 15:37:03,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:03,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115696798] [2020-10-13 15:37:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:03,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:04,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:04,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:04,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:04,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:04,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:04,318 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 15:37:04,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115696798] [2020-10-13 15:37:04,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:04,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:04,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436699516] [2020-10-13 15:37:04,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:04,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:04,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:04,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:04,320 INFO L87 Difference]: Start difference. First operand 196 states and 289 transitions. Second operand 5 states. [2020-10-13 15:37:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:04,842 INFO L93 Difference]: Finished difference Result 384 states and 572 transitions. [2020-10-13 15:37:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:04,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:37:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:04,845 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:37:04,845 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:37:04,846 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 15:37:04,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:37:04,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:37:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:37:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2020-10-13 15:37:04,852 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 72 [2020-10-13 15:37:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:04,853 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2020-10-13 15:37:04,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:04,853 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2020-10-13 15:37:04,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 15:37:04,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:04,854 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] [2020-10-13 15:37:04,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:37:04,854 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:04,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:04,854 INFO L82 PathProgramCache]: Analyzing trace with hash -123517918, now seen corresponding path program 1 times [2020-10-13 15:37:04,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:04,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954161042] [2020-10-13 15:37:04,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:04,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:09,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 15:37:09,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:09,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:37:09,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:09,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:09,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:09,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:09,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:09,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:09,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:09,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:09,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:09,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:09,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:09,927 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 15:37:09,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954161042] [2020-10-13 15:37:09,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:09,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:09,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798879109] [2020-10-13 15:37:09,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:09,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:09,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:09,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:09,929 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand 5 states. [2020-10-13 15:37:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:10,464 INFO L93 Difference]: Finished difference Result 384 states and 570 transitions. [2020-10-13 15:37:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:10,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-13 15:37:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:10,467 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:37:10,467 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:37:10,468 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 15:37:10,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:37:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:37:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:37:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2020-10-13 15:37:10,474 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 73 [2020-10-13 15:37:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:10,475 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2020-10-13 15:37:10,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:10,475 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2020-10-13 15:37:10,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 15:37:10,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:10,476 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] [2020-10-13 15:37:10,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:37:10,477 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:10,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1216050293, now seen corresponding path program 1 times [2020-10-13 15:37:10,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:10,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461029846] [2020-10-13 15:37:10,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:11,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:15,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 15:37:15,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:37:15,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:15,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:15,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:15,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:15,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:15,549 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 15:37:15,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461029846] [2020-10-13 15:37:15,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:15,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:15,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72481594] [2020-10-13 15:37:15,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:15,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:15,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:15,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:15,551 INFO L87 Difference]: Start difference. First operand 196 states and 287 transitions. Second operand 5 states. [2020-10-13 15:37:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:16,095 INFO L93 Difference]: Finished difference Result 384 states and 568 transitions. [2020-10-13 15:37:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:16,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-13 15:37:16,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:16,097 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:37:16,097 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:37:16,098 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 15:37:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:37:16,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:37:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:37:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 286 transitions. [2020-10-13 15:37:16,106 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 286 transitions. Word has length 74 [2020-10-13 15:37:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:16,106 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 286 transitions. [2020-10-13 15:37:16,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 286 transitions. [2020-10-13 15:37:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 15:37:16,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:16,107 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] [2020-10-13 15:37:16,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:37:16,108 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:16,108 INFO L82 PathProgramCache]: Analyzing trace with hash -2006850147, now seen corresponding path program 1 times [2020-10-13 15:37:16,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:16,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443582834] [2020-10-13 15:37:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:16,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:21,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 15:37:21,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:21,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:37:21,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:21,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:37:21,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:21,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:21,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:21,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:21,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:21,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:21,184 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 15:37:21,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443582834] [2020-10-13 15:37:21,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:21,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:21,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085625982] [2020-10-13 15:37:21,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:21,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:21,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:21,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:21,193 INFO L87 Difference]: Start difference. First operand 196 states and 286 transitions. Second operand 5 states. [2020-10-13 15:37:21,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:21,748 INFO L93 Difference]: Finished difference Result 384 states and 566 transitions. [2020-10-13 15:37:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:21,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-13 15:37:21,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:21,751 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:37:21,751 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:37:21,752 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 15:37:21,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:37:21,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:37:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:37:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 285 transitions. [2020-10-13 15:37:21,759 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 285 transitions. Word has length 75 [2020-10-13 15:37:21,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:21,759 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 285 transitions. [2020-10-13 15:37:21,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:21,759 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 285 transitions. [2020-10-13 15:37:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 15:37:21,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:21,760 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] [2020-10-13 15:37:21,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:37:21,761 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:21,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:21,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2033876442, now seen corresponding path program 1 times [2020-10-13 15:37:21,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:21,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162206741] [2020-10-13 15:37:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:21,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:26,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 15:37:26,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:37:26,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:37:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:37:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:26,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:26,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:26,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:26,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:26,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:26,842 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 15:37:26,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162206741] [2020-10-13 15:37:26,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:26,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:26,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37400656] [2020-10-13 15:37:26,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:26,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:26,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:26,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:26,844 INFO L87 Difference]: Start difference. First operand 196 states and 285 transitions. Second operand 5 states. [2020-10-13 15:37:27,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:27,382 INFO L93 Difference]: Finished difference Result 374 states and 552 transitions. [2020-10-13 15:37:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:27,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-13 15:37:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:27,385 INFO L225 Difference]: With dead ends: 374 [2020-10-13 15:37:27,385 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 15:37:27,386 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 15:37:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 15:37:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2020-10-13 15:37:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:37:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 284 transitions. [2020-10-13 15:37:27,392 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 284 transitions. Word has length 76 [2020-10-13 15:37:27,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:27,392 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 284 transitions. [2020-10-13 15:37:27,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:27,392 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 284 transitions. [2020-10-13 15:37:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:37:27,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:27,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:27,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:37:27,394 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:27,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:27,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1101054784, now seen corresponding path program 1 times [2020-10-13 15:37:27,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:27,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807700719] [2020-10-13 15:37:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:27,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:27,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:27,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:37:27,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 15:37:27,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:37:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:27,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:27,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:27,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:27,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:27,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:27,671 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 15:37:27,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807700719] [2020-10-13 15:37:27,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:27,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:27,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482935481] [2020-10-13 15:37:27,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:27,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:27,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:27,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:27,672 INFO L87 Difference]: Start difference. First operand 196 states and 284 transitions. Second operand 5 states. [2020-10-13 15:37:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:28,466 INFO L93 Difference]: Finished difference Result 482 states and 715 transitions. [2020-10-13 15:37:28,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:28,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:37:28,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:28,470 INFO L225 Difference]: With dead ends: 482 [2020-10-13 15:37:28,470 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:37:28,471 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 15:37:28,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:37:28,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 225. [2020-10-13 15:37:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-13 15:37:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-10-13 15:37:28,478 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 80 [2020-10-13 15:37:28,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:28,479 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-10-13 15:37:28,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:28,479 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-10-13 15:37:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:37:28,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:28,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:28,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:37:28,480 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:28,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1028668226, now seen corresponding path program 1 times [2020-10-13 15:37:28,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:28,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374707938] [2020-10-13 15:37:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:28,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:29,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:37:29,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:29,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-13 15:37:29,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:29,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:29,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:29,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:37:29,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:29,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:29,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:29,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:29,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374707938] [2020-10-13 15:37:29,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:29,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:29,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592940315] [2020-10-13 15:37:29,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:29,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:29,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:29,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:29,119 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 5 states. [2020-10-13 15:37:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:29,825 INFO L93 Difference]: Finished difference Result 484 states and 730 transitions. [2020-10-13 15:37:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:29,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:37:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:29,828 INFO L225 Difference]: With dead ends: 484 [2020-10-13 15:37:29,828 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:37:29,829 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 15:37:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:37:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2020-10-13 15:37:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 15:37:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 377 transitions. [2020-10-13 15:37:29,838 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 377 transitions. Word has length 80 [2020-10-13 15:37:29,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:29,838 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 377 transitions. [2020-10-13 15:37:29,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:29,839 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 377 transitions. [2020-10-13 15:37:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:37:29,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:29,840 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] [2020-10-13 15:37:29,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:37:29,840 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:29,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:29,840 INFO L82 PathProgramCache]: Analyzing trace with hash 354143499, now seen corresponding path program 1 times [2020-10-13 15:37:29,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:29,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620727501] [2020-10-13 15:37:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:29,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:30,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:37:30,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:30,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 15:37:30,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:37:30,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:30,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:30,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:30,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:30,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:30,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:30,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:30,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:30,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:30,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:30,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:30,126 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 15:37:30,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620727501] [2020-10-13 15:37:30,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:30,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:30,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408570883] [2020-10-13 15:37:30,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:30,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:30,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:30,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:30,127 INFO L87 Difference]: Start difference. First operand 249 states and 377 transitions. Second operand 5 states. [2020-10-13 15:37:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:30,919 INFO L93 Difference]: Finished difference Result 551 states and 836 transitions. [2020-10-13 15:37:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:30,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:37:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:30,922 INFO L225 Difference]: With dead ends: 551 [2020-10-13 15:37:30,922 INFO L226 Difference]: Without dead ends: 327 [2020-10-13 15:37:30,923 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 15:37:30,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-13 15:37:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-10-13 15:37:30,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 15:37:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 378 transitions. [2020-10-13 15:37:30,935 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 378 transitions. Word has length 81 [2020-10-13 15:37:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:30,935 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 378 transitions. [2020-10-13 15:37:30,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 378 transitions. [2020-10-13 15:37:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:37:30,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:30,936 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] [2020-10-13 15:37:30,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:37:30,939 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:30,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:30,939 INFO L82 PathProgramCache]: Analyzing trace with hash -666161799, now seen corresponding path program 1 times [2020-10-13 15:37:30,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:30,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281904005] [2020-10-13 15:37:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:31,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:37:31,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-13 15:37:31,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:31,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:37:31,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:31,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:31,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:31,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:31,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:31,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:31,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:31,247 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 15:37:31,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281904005] [2020-10-13 15:37:31,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:31,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:31,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129297781] [2020-10-13 15:37:31,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:31,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:31,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:31,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:31,249 INFO L87 Difference]: Start difference. First operand 250 states and 378 transitions. Second operand 5 states. [2020-10-13 15:37:31,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:31,995 INFO L93 Difference]: Finished difference Result 552 states and 836 transitions. [2020-10-13 15:37:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:31,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:37:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:31,999 INFO L225 Difference]: With dead ends: 552 [2020-10-13 15:37:31,999 INFO L226 Difference]: Without dead ends: 327 [2020-10-13 15:37:32,000 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 15:37:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-13 15:37:32,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 260. [2020-10-13 15:37:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-13 15:37:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 397 transitions. [2020-10-13 15:37:32,008 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 397 transitions. Word has length 87 [2020-10-13 15:37:32,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:32,008 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 397 transitions. [2020-10-13 15:37:32,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 397 transitions. [2020-10-13 15:37:32,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 15:37:32,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:32,010 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] [2020-10-13 15:37:32,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:37:32,010 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:32,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:32,010 INFO L82 PathProgramCache]: Analyzing trace with hash 606638003, now seen corresponding path program 1 times [2020-10-13 15:37:32,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:32,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289320459] [2020-10-13 15:37:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:32,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 15:37:32,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:32,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 15:37:32,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:37:32,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:32,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:32,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:32,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:32,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:32,313 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 15:37:32,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289320459] [2020-10-13 15:37:32,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:32,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:32,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751136775] [2020-10-13 15:37:32,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:32,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:32,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:32,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:32,315 INFO L87 Difference]: Start difference. First operand 260 states and 397 transitions. Second operand 5 states. [2020-10-13 15:37:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:33,066 INFO L93 Difference]: Finished difference Result 554 states and 843 transitions. [2020-10-13 15:37:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:33,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-13 15:37:33,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:33,068 INFO L225 Difference]: With dead ends: 554 [2020-10-13 15:37:33,068 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 15:37:33,069 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 15:37:33,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 15:37:33,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 261. [2020-10-13 15:37:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:33,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 398 transitions. [2020-10-13 15:37:33,076 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 398 transitions. Word has length 88 [2020-10-13 15:37:33,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:33,076 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 398 transitions. [2020-10-13 15:37:33,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:33,076 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 398 transitions. [2020-10-13 15:37:33,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:37:33,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:33,078 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] [2020-10-13 15:37:33,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:37:33,078 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:33,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:33,078 INFO L82 PathProgramCache]: Analyzing trace with hash 785749009, now seen corresponding path program 1 times [2020-10-13 15:37:33,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:33,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737306036] [2020-10-13 15:37:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:33,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:37:33,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:33,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-10-13 15:37:33,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:33,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:33,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:33,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:33,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:33,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:33,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:33,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:33,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:33,880 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 15:37:33,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737306036] [2020-10-13 15:37:33,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:33,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:33,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444364095] [2020-10-13 15:37:33,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:33,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:33,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:33,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:33,882 INFO L87 Difference]: Start difference. First operand 261 states and 398 transitions. Second operand 5 states. [2020-10-13 15:37:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:34,634 INFO L93 Difference]: Finished difference Result 555 states and 843 transitions. [2020-10-13 15:37:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:34,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 15:37:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:34,637 INFO L225 Difference]: With dead ends: 555 [2020-10-13 15:37:34,638 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 15:37:34,639 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 15:37:34,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 15:37:34,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 261. [2020-10-13 15:37:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 397 transitions. [2020-10-13 15:37:34,646 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 397 transitions. Word has length 93 [2020-10-13 15:37:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:34,647 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 397 transitions. [2020-10-13 15:37:34,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 397 transitions. [2020-10-13 15:37:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:37:34,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:34,648 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] [2020-10-13 15:37:34,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:37:34,649 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:34,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1580945585, now seen corresponding path program 1 times [2020-10-13 15:37:34,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:34,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940215509] [2020-10-13 15:37:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:35,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:37:35,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-13 15:37:35,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:35,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:35,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:35,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:35,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:35,382 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 15:37:35,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940215509] [2020-10-13 15:37:35,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:35,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:35,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631497613] [2020-10-13 15:37:35,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:35,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:35,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:35,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:35,384 INFO L87 Difference]: Start difference. First operand 261 states and 397 transitions. Second operand 5 states. [2020-10-13 15:37:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:36,091 INFO L93 Difference]: Finished difference Result 532 states and 811 transitions. [2020-10-13 15:37:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:36,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 15:37:36,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:36,093 INFO L225 Difference]: With dead ends: 532 [2020-10-13 15:37:36,093 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 15:37:36,094 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 15:37:36,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 15:37:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2020-10-13 15:37:36,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 396 transitions. [2020-10-13 15:37:36,103 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 396 transitions. Word has length 93 [2020-10-13 15:37:36,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:36,103 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 396 transitions. [2020-10-13 15:37:36,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:36,103 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 396 transitions. [2020-10-13 15:37:36,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:36,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:36,105 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] [2020-10-13 15:37:36,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:37:36,105 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:36,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:36,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1069922339, now seen corresponding path program 1 times [2020-10-13 15:37:36,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:36,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813331649] [2020-10-13 15:37:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:36,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:36,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:41,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:41,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:37:41,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:41,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:41,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:41,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:41,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:41,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:41,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:41,194 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 15:37:41,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813331649] [2020-10-13 15:37:41,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:41,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:41,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38937011] [2020-10-13 15:37:41,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:41,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:41,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:41,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:41,196 INFO L87 Difference]: Start difference. First operand 261 states and 396 transitions. Second operand 5 states. [2020-10-13 15:37:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:41,921 INFO L93 Difference]: Finished difference Result 545 states and 826 transitions. [2020-10-13 15:37:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:41,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:41,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:41,925 INFO L225 Difference]: With dead ends: 545 [2020-10-13 15:37:41,925 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:37:41,926 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 15:37:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:37:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 261. [2020-10-13 15:37:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 395 transitions. [2020-10-13 15:37:41,933 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 395 transitions. Word has length 94 [2020-10-13 15:37:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:41,934 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 395 transitions. [2020-10-13 15:37:41,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 395 transitions. [2020-10-13 15:37:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:41,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:41,935 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] [2020-10-13 15:37:41,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:37:41,936 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:41,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:41,936 INFO L82 PathProgramCache]: Analyzing trace with hash 957767654, now seen corresponding path program 1 times [2020-10-13 15:37:41,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:41,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977441585] [2020-10-13 15:37:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:42,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:42,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:42,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-10-13 15:37:42,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:42,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:42,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:42,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:42,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:42,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:42,751 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 15:37:42,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977441585] [2020-10-13 15:37:42,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:42,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:42,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918881102] [2020-10-13 15:37:42,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:42,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:42,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:42,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:42,753 INFO L87 Difference]: Start difference. First operand 261 states and 395 transitions. Second operand 5 states. [2020-10-13 15:37:43,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:43,486 INFO L93 Difference]: Finished difference Result 543 states and 822 transitions. [2020-10-13 15:37:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:43,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:43,489 INFO L225 Difference]: With dead ends: 543 [2020-10-13 15:37:43,489 INFO L226 Difference]: Without dead ends: 307 [2020-10-13 15:37:43,490 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 15:37:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-13 15:37:43,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 261. [2020-10-13 15:37:43,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2020-10-13 15:37:43,498 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 94 [2020-10-13 15:37:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:43,499 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2020-10-13 15:37:43,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2020-10-13 15:37:43,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:43,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:43,500 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] [2020-10-13 15:37:43,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:37:43,501 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:43,501 INFO L82 PathProgramCache]: Analyzing trace with hash -685763801, now seen corresponding path program 1 times [2020-10-13 15:37:43,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:43,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826812027] [2020-10-13 15:37:43,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:43,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:43,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:44,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:44,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:44,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-13 15:37:44,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:44,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:44,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:44,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:44,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:44,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:44,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:44,231 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 15:37:44,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826812027] [2020-10-13 15:37:44,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:44,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:44,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602881217] [2020-10-13 15:37:44,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:44,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:44,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:44,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:44,233 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand 5 states. [2020-10-13 15:37:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:44,956 INFO L93 Difference]: Finished difference Result 542 states and 819 transitions. [2020-10-13 15:37:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:44,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:44,959 INFO L225 Difference]: With dead ends: 542 [2020-10-13 15:37:44,960 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:37:44,961 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 15:37:44,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:37:44,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 261. [2020-10-13 15:37:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 393 transitions. [2020-10-13 15:37:44,968 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 393 transitions. Word has length 94 [2020-10-13 15:37:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:44,968 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 393 transitions. [2020-10-13 15:37:44,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 393 transitions. [2020-10-13 15:37:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:44,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:44,970 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] [2020-10-13 15:37:44,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:37:44,970 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:44,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:44,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1423010721, now seen corresponding path program 1 times [2020-10-13 15:37:44,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:44,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119632867] [2020-10-13 15:37:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:45,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:45,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:49,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:49,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:37:49,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:50,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:50,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:50,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:50,052 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 15:37:50,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119632867] [2020-10-13 15:37:50,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:50,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:50,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831088013] [2020-10-13 15:37:50,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:50,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:50,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:50,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:50,054 INFO L87 Difference]: Start difference. First operand 261 states and 393 transitions. Second operand 5 states. [2020-10-13 15:37:50,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:50,735 INFO L93 Difference]: Finished difference Result 522 states and 790 transitions. [2020-10-13 15:37:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:50,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:50,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:50,738 INFO L225 Difference]: With dead ends: 522 [2020-10-13 15:37:50,738 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:37:50,739 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 15:37:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:37:50,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 261. [2020-10-13 15:37:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 392 transitions. [2020-10-13 15:37:50,748 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 392 transitions. Word has length 94 [2020-10-13 15:37:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:50,748 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 392 transitions. [2020-10-13 15:37:50,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 392 transitions. [2020-10-13 15:37:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:50,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:50,750 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] [2020-10-13 15:37:50,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:37:50,750 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:50,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:50,750 INFO L82 PathProgramCache]: Analyzing trace with hash 604679272, now seen corresponding path program 1 times [2020-10-13 15:37:50,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:50,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158813866] [2020-10-13 15:37:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:51,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:51,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:51,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-13 15:37:51,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:51,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:51,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:51,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:51,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:51,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:51,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:51,534 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 15:37:51,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158813866] [2020-10-13 15:37:51,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:51,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:51,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854482054] [2020-10-13 15:37:51,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:51,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:51,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:51,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:51,536 INFO L87 Difference]: Start difference. First operand 261 states and 392 transitions. Second operand 5 states. [2020-10-13 15:37:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:52,257 INFO L93 Difference]: Finished difference Result 520 states and 786 transitions. [2020-10-13 15:37:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:52,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:52,260 INFO L225 Difference]: With dead ends: 520 [2020-10-13 15:37:52,260 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:37:52,261 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 15:37:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:37:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 261. [2020-10-13 15:37:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 391 transitions. [2020-10-13 15:37:52,268 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 391 transitions. Word has length 94 [2020-10-13 15:37:52,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:52,269 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 391 transitions. [2020-10-13 15:37:52,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 391 transitions. [2020-10-13 15:37:52,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:52,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:52,270 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] [2020-10-13 15:37:52,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:37:52,270 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:52,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:52,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1038852183, now seen corresponding path program 1 times [2020-10-13 15:37:52,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:52,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681803189] [2020-10-13 15:37:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:52,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:52,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:52,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-13 15:37:52,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:52,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:52,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:52,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:52,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:52,925 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 15:37:52,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681803189] [2020-10-13 15:37:52,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:52,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:52,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723262281] [2020-10-13 15:37:52,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:52,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:52,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:52,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:52,927 INFO L87 Difference]: Start difference. First operand 261 states and 391 transitions. Second operand 5 states. [2020-10-13 15:37:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:53,616 INFO L93 Difference]: Finished difference Result 519 states and 783 transitions. [2020-10-13 15:37:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:53,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:53,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:53,619 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:37:53,619 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:37:53,619 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 15:37:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:37:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:37:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:53,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 390 transitions. [2020-10-13 15:37:53,627 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 390 transitions. Word has length 94 [2020-10-13 15:37:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:53,627 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 390 transitions. [2020-10-13 15:37:53,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 390 transitions. [2020-10-13 15:37:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:37:53,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:53,628 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] [2020-10-13 15:37:53,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:37:53,629 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:53,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:53,629 INFO L82 PathProgramCache]: Analyzing trace with hash -801757044, now seen corresponding path program 1 times [2020-10-13 15:37:53,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:53,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497590690] [2020-10-13 15:37:53,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:58,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:58,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:37:58,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:58,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:37:58,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:58,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:58,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:58,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:58,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:58,713 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 15:37:58,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497590690] [2020-10-13 15:37:58,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:58,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:58,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082262710] [2020-10-13 15:37:58,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:58,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:58,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:58,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:58,714 INFO L87 Difference]: Start difference. First operand 261 states and 390 transitions. Second operand 5 states. [2020-10-13 15:37:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:59,465 INFO L93 Difference]: Finished difference Result 542 states and 811 transitions. [2020-10-13 15:37:59,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:59,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:37:59,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:59,468 INFO L225 Difference]: With dead ends: 542 [2020-10-13 15:37:59,468 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:37:59,469 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 15:37:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:37:59,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 261. [2020-10-13 15:37:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:59,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 389 transitions. [2020-10-13 15:37:59,478 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 389 transitions. Word has length 95 [2020-10-13 15:37:59,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:59,478 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 389 transitions. [2020-10-13 15:37:59,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 389 transitions. [2020-10-13 15:37:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:37:59,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:59,480 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] [2020-10-13 15:37:59,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:37:59,481 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:59,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:59,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1137405002, now seen corresponding path program 1 times [2020-10-13 15:37:59,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:59,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142177007] [2020-10-13 15:37:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:01,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:04,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:38:04,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:38:04,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:38:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:04,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:04,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:04,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:04,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:04,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:04,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:04,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:04,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:04,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:04,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:04,581 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 15:38:04,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142177007] [2020-10-13 15:38:04,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:04,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:04,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029510049] [2020-10-13 15:38:04,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:04,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:04,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:04,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:04,583 INFO L87 Difference]: Start difference. First operand 261 states and 389 transitions. Second operand 5 states. [2020-10-13 15:38:05,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:05,237 INFO L93 Difference]: Finished difference Result 519 states and 779 transitions. [2020-10-13 15:38:05,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:05,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:38:05,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:05,240 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:38:05,240 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:38:05,241 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 15:38:05,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:38:05,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:38:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 388 transitions. [2020-10-13 15:38:05,248 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 388 transitions. Word has length 95 [2020-10-13 15:38:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:05,248 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 388 transitions. [2020-10-13 15:38:05,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 388 transitions. [2020-10-13 15:38:05,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:38:05,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:05,250 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] [2020-10-13 15:38:05,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:38:05,250 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:05,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:05,250 INFO L82 PathProgramCache]: Analyzing trace with hash -766626719, now seen corresponding path program 1 times [2020-10-13 15:38:05,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:05,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518078223] [2020-10-13 15:38:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:10,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:38:10,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:10,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:38:10,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:38:10,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:10,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:10,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:10,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:10,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:10,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:10,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:10,344 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 15:38:10,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518078223] [2020-10-13 15:38:10,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:10,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:10,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427954470] [2020-10-13 15:38:10,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:10,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:10,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:10,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:10,351 INFO L87 Difference]: Start difference. First operand 261 states and 388 transitions. Second operand 5 states. [2020-10-13 15:38:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:11,138 INFO L93 Difference]: Finished difference Result 542 states and 807 transitions. [2020-10-13 15:38:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:11,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:38:11,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:11,141 INFO L225 Difference]: With dead ends: 542 [2020-10-13 15:38:11,141 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:38:11,142 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 15:38:11,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:38:11,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 261. [2020-10-13 15:38:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 387 transitions. [2020-10-13 15:38:11,148 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 387 transitions. Word has length 96 [2020-10-13 15:38:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:11,148 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 387 transitions. [2020-10-13 15:38:11,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:11,149 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 387 transitions. [2020-10-13 15:38:11,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:38:11,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:11,150 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] [2020-10-13 15:38:11,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:38:11,150 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:11,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:11,151 INFO L82 PathProgramCache]: Analyzing trace with hash -782145437, now seen corresponding path program 1 times [2020-10-13 15:38:11,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:11,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320106814] [2020-10-13 15:38:11,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:11,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:16,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:38:16,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:16,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:38:16,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:16,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:38:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:16,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:16,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:16,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:16,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:16,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:16,243 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 15:38:16,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320106814] [2020-10-13 15:38:16,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:16,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:16,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236057609] [2020-10-13 15:38:16,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:16,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:16,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:16,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:16,246 INFO L87 Difference]: Start difference. First operand 261 states and 387 transitions. Second operand 5 states. [2020-10-13 15:38:16,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:16,932 INFO L93 Difference]: Finished difference Result 519 states and 775 transitions. [2020-10-13 15:38:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:16,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:38:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:16,935 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:38:16,935 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:38:16,936 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 15:38:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:38:16,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:38:16,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 386 transitions. [2020-10-13 15:38:16,945 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 386 transitions. Word has length 96 [2020-10-13 15:38:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:16,946 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 386 transitions. [2020-10-13 15:38:16,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 386 transitions. [2020-10-13 15:38:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:38:16,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:16,947 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] [2020-10-13 15:38:16,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:38:16,948 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:16,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:16,948 INFO L82 PathProgramCache]: Analyzing trace with hash -959621241, now seen corresponding path program 1 times [2020-10-13 15:38:16,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:16,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626032766] [2020-10-13 15:38:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:16,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:21,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 15:38:21,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:21,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:38:21,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:38:21,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:22,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:22,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:22,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:22,041 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 15:38:22,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626032766] [2020-10-13 15:38:22,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:22,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:22,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710792270] [2020-10-13 15:38:22,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:22,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:22,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:22,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:22,042 INFO L87 Difference]: Start difference. First operand 261 states and 386 transitions. Second operand 5 states. [2020-10-13 15:38:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:22,811 INFO L93 Difference]: Finished difference Result 542 states and 803 transitions. [2020-10-13 15:38:22,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:22,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 15:38:22,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:22,813 INFO L225 Difference]: With dead ends: 542 [2020-10-13 15:38:22,813 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 15:38:22,814 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 15:38:22,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 15:38:22,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 261. [2020-10-13 15:38:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 385 transitions. [2020-10-13 15:38:22,821 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 385 transitions. Word has length 97 [2020-10-13 15:38:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:22,821 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 385 transitions. [2020-10-13 15:38:22,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 385 transitions. [2020-10-13 15:38:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:38:22,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:22,823 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] [2020-10-13 15:38:22,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:38:22,823 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:22,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:22,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1440701499, now seen corresponding path program 1 times [2020-10-13 15:38:22,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:22,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148092870] [2020-10-13 15:38:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 15:38:27,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:38:27,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:38:27,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:27,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:27,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:27,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:27,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:27,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:27,916 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 15:38:27,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148092870] [2020-10-13 15:38:27,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:27,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:27,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925446787] [2020-10-13 15:38:27,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:27,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:27,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:27,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:27,917 INFO L87 Difference]: Start difference. First operand 261 states and 385 transitions. Second operand 5 states. [2020-10-13 15:38:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:28,605 INFO L93 Difference]: Finished difference Result 519 states and 771 transitions. [2020-10-13 15:38:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:28,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 15:38:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:28,608 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:38:28,608 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:38:28,609 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 15:38:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:38:28,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:38:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:28,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 384 transitions. [2020-10-13 15:38:28,615 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 384 transitions. Word has length 97 [2020-10-13 15:38:28,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:28,616 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 384 transitions. [2020-10-13 15:38:28,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:28,616 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 384 transitions. [2020-10-13 15:38:28,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:38:28,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:28,617 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] [2020-10-13 15:38:28,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:38:28,617 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:28,617 INFO L82 PathProgramCache]: Analyzing trace with hash 365448572, now seen corresponding path program 1 times [2020-10-13 15:38:28,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:28,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395124459] [2020-10-13 15:38:28,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:33,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:38:33,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:38:33,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:33,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:33,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:33,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:33,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:33,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:33,707 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 15:38:33,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395124459] [2020-10-13 15:38:33,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:33,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:33,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036664730] [2020-10-13 15:38:33,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:33,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:33,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:33,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:33,709 INFO L87 Difference]: Start difference. First operand 261 states and 384 transitions. Second operand 5 states. [2020-10-13 15:38:34,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:34,427 INFO L93 Difference]: Finished difference Result 532 states and 787 transitions. [2020-10-13 15:38:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:34,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:38:34,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:34,430 INFO L225 Difference]: With dead ends: 532 [2020-10-13 15:38:34,430 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 15:38:34,431 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 15:38:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 15:38:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2020-10-13 15:38:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 383 transitions. [2020-10-13 15:38:34,437 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 383 transitions. Word has length 98 [2020-10-13 15:38:34,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:34,437 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 383 transitions. [2020-10-13 15:38:34,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 383 transitions. [2020-10-13 15:38:34,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:38:34,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:34,439 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] [2020-10-13 15:38:34,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:38:34,439 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:34,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:34,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1663137538, now seen corresponding path program 1 times [2020-10-13 15:38:34,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:34,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821056569] [2020-10-13 15:38:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:35,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:39,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:38:39,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:39,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:38:39,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:39,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:39,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:39,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:39,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:39,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:39,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:39,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:39,533 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 15:38:39,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821056569] [2020-10-13 15:38:39,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:39,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:39,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103188492] [2020-10-13 15:38:39,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:39,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:39,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:39,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:39,535 INFO L87 Difference]: Start difference. First operand 261 states and 383 transitions. Second operand 5 states. [2020-10-13 15:38:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:40,205 INFO L93 Difference]: Finished difference Result 509 states and 755 transitions. [2020-10-13 15:38:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:40,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:38:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:40,209 INFO L225 Difference]: With dead ends: 509 [2020-10-13 15:38:40,209 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 15:38:40,210 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 15:38:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 15:38:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2020-10-13 15:38:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:40,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 382 transitions. [2020-10-13 15:38:40,217 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 382 transitions. Word has length 98 [2020-10-13 15:38:40,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:40,217 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 382 transitions. [2020-10-13 15:38:40,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:40,217 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 382 transitions. [2020-10-13 15:38:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:38:40,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:40,219 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] [2020-10-13 15:38:40,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:38:40,219 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:40,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:40,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1270854244, now seen corresponding path program 1 times [2020-10-13 15:38:40,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:40,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498097838] [2020-10-13 15:38:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:40,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:41,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:41,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:38:41,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:41,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-10-13 15:38:41,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:41,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:41,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:41,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:38:41,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:41,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:41,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:41,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:41,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:41,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:41,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:41,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:41,501 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 15:38:41,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498097838] [2020-10-13 15:38:41,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:41,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:41,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855851819] [2020-10-13 15:38:41,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:41,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:41,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:41,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:41,502 INFO L87 Difference]: Start difference. First operand 261 states and 382 transitions. Second operand 5 states. [2020-10-13 15:38:42,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:42,237 INFO L93 Difference]: Finished difference Result 532 states and 783 transitions. [2020-10-13 15:38:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:42,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:38:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:42,240 INFO L225 Difference]: With dead ends: 532 [2020-10-13 15:38:42,240 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 15:38:42,241 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 15:38:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 15:38:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2020-10-13 15:38:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 381 transitions. [2020-10-13 15:38:42,247 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 381 transitions. Word has length 102 [2020-10-13 15:38:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:42,247 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 381 transitions. [2020-10-13 15:38:42,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 381 transitions. [2020-10-13 15:38:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:38:42,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:42,249 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] [2020-10-13 15:38:42,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:38:42,249 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:42,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1637327642, now seen corresponding path program 1 times [2020-10-13 15:38:42,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:42,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365335865] [2020-10-13 15:38:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:42,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:42,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:42,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:42,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:38:42,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-13 15:38:42,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:38:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:42,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:42,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:42,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:42,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:42,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:42,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:42,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:42,698 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 15:38:42,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365335865] [2020-10-13 15:38:42,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:42,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:42,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079216649] [2020-10-13 15:38:42,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:42,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:42,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:42,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:42,699 INFO L87 Difference]: Start difference. First operand 261 states and 381 transitions. Second operand 5 states. [2020-10-13 15:38:43,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:43,386 INFO L93 Difference]: Finished difference Result 560 states and 829 transitions. [2020-10-13 15:38:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:43,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:38:43,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:43,389 INFO L225 Difference]: With dead ends: 560 [2020-10-13 15:38:43,389 INFO L226 Difference]: Without dead ends: 324 [2020-10-13 15:38:43,390 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 15:38:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-13 15:38:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 287. [2020-10-13 15:38:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:38:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 427 transitions. [2020-10-13 15:38:43,397 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 427 transitions. Word has length 102 [2020-10-13 15:38:43,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:43,397 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 427 transitions. [2020-10-13 15:38:43,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 427 transitions. [2020-10-13 15:38:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:38:43,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:43,399 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] [2020-10-13 15:38:43,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:38:43,399 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash -311059026, now seen corresponding path program 1 times [2020-10-13 15:38:43,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:43,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453460536] [2020-10-13 15:38:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:43,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:43,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:44,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:44,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:38:44,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-13 15:38:44,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:38:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:44,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:44,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:44,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:44,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:44,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:44,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:44,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:44,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453460536] [2020-10-13 15:38:44,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:44,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:44,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709470834] [2020-10-13 15:38:44,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:44,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:44,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:44,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:44,215 INFO L87 Difference]: Start difference. First operand 287 states and 427 transitions. Second operand 5 states. [2020-10-13 15:38:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:45,181 INFO L93 Difference]: Finished difference Result 663 states and 1000 transitions. [2020-10-13 15:38:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:45,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:38:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:45,187 INFO L225 Difference]: With dead ends: 663 [2020-10-13 15:38:45,187 INFO L226 Difference]: Without dead ends: 401 [2020-10-13 15:38:45,187 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 15:38:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-13 15:38:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 315. [2020-10-13 15:38:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-13 15:38:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 477 transitions. [2020-10-13 15:38:45,193 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 477 transitions. Word has length 107 [2020-10-13 15:38:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:45,193 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 477 transitions. [2020-10-13 15:38:45,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:45,193 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 477 transitions. [2020-10-13 15:38:45,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:38:45,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:45,194 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] [2020-10-13 15:38:45,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:38:45,195 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:45,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:45,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1875257273, now seen corresponding path program 1 times [2020-10-13 15:38:45,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:45,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648973010] [2020-10-13 15:38:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:47,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:38:47,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:47,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2399 [2020-10-13 15:38:47,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:38:47,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:47,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:47,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:47,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:47,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:47,679 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 15:38:47,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648973010] [2020-10-13 15:38:47,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:47,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:47,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506961948] [2020-10-13 15:38:47,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:47,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:47,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:47,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:47,680 INFO L87 Difference]: Start difference. First operand 315 states and 477 transitions. Second operand 5 states. [2020-10-13 15:38:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:48,401 INFO L93 Difference]: Finished difference Result 640 states and 973 transitions. [2020-10-13 15:38:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:48,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:38:48,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:48,404 INFO L225 Difference]: With dead ends: 640 [2020-10-13 15:38:48,405 INFO L226 Difference]: Without dead ends: 350 [2020-10-13 15:38:48,405 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 15:38:48,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-13 15:38:48,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 315. [2020-10-13 15:38:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-13 15:38:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 476 transitions. [2020-10-13 15:38:48,412 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 476 transitions. Word has length 108 [2020-10-13 15:38:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:48,412 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 476 transitions. [2020-10-13 15:38:48,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 476 transitions. [2020-10-13 15:38:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:38:48,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:48,413 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] [2020-10-13 15:38:48,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:38:48,414 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:48,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:48,414 INFO L82 PathProgramCache]: Analyzing trace with hash -471711651, now seen corresponding path program 1 times [2020-10-13 15:38:48,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:48,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832538238] [2020-10-13 15:38:48,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:49,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:38:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-13 15:38:49,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:38:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:49,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:49,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:49,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:49,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:49,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:49,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:49,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832538238] [2020-10-13 15:38:49,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:49,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:49,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772441665] [2020-10-13 15:38:49,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:49,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:49,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:49,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:49,310 INFO L87 Difference]: Start difference. First operand 315 states and 476 transitions. Second operand 5 states. [2020-10-13 15:38:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:50,208 INFO L93 Difference]: Finished difference Result 683 states and 1034 transitions. [2020-10-13 15:38:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:50,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:38:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:50,211 INFO L225 Difference]: With dead ends: 683 [2020-10-13 15:38:50,211 INFO L226 Difference]: Without dead ends: 393 [2020-10-13 15:38:50,211 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 15:38:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-13 15:38:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 316. [2020-10-13 15:38:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:38:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 477 transitions. [2020-10-13 15:38:50,218 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 477 transitions. Word has length 108 [2020-10-13 15:38:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:50,219 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 477 transitions. [2020-10-13 15:38:50,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 477 transitions. [2020-10-13 15:38:50,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:38:50,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:50,220 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] [2020-10-13 15:38:50,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:38:50,220 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:50,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:50,221 INFO L82 PathProgramCache]: Analyzing trace with hash -717245852, now seen corresponding path program 1 times [2020-10-13 15:38:50,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:50,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249115049] [2020-10-13 15:38:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:50,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:52,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:52,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:38:52,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:52,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2390 [2020-10-13 15:38:52,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:52,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:52,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:52,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:52,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:52,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:52,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:52,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:52,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:52,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:52,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:52,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:52,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:52,712 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 15:38:52,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249115049] [2020-10-13 15:38:52,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:52,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:52,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756059255] [2020-10-13 15:38:52,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:52,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:52,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:52,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:52,714 INFO L87 Difference]: Start difference. First operand 316 states and 477 transitions. Second operand 5 states. [2020-10-13 15:38:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:53,458 INFO L93 Difference]: Finished difference Result 640 states and 970 transitions. [2020-10-13 15:38:53,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:53,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:38:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:53,460 INFO L225 Difference]: With dead ends: 640 [2020-10-13 15:38:53,461 INFO L226 Difference]: Without dead ends: 349 [2020-10-13 15:38:53,462 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 15:38:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-13 15:38:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 316. [2020-10-13 15:38:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:38:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 476 transitions. [2020-10-13 15:38:53,468 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 476 transitions. Word has length 109 [2020-10-13 15:38:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:53,469 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 476 transitions. [2020-10-13 15:38:53,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:53,469 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 476 transitions. [2020-10-13 15:38:53,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:38:53,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:53,470 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] [2020-10-13 15:38:53,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:38:53,470 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:53,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:53,470 INFO L82 PathProgramCache]: Analyzing trace with hash 928761676, now seen corresponding path program 1 times [2020-10-13 15:38:53,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:53,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698584823] [2020-10-13 15:38:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:53,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:38:53,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:38:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-13 15:38:53,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:38:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:53,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:53,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:53,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:53,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:53,879 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 15:38:53,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698584823] [2020-10-13 15:38:53,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:53,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:53,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218887481] [2020-10-13 15:38:53,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:53,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:53,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:53,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:53,881 INFO L87 Difference]: Start difference. First operand 316 states and 476 transitions. Second operand 5 states. [2020-10-13 15:38:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:54,573 INFO L93 Difference]: Finished difference Result 637 states and 964 transitions. [2020-10-13 15:38:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:54,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:38:54,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:54,576 INFO L225 Difference]: With dead ends: 637 [2020-10-13 15:38:54,576 INFO L226 Difference]: Without dead ends: 346 [2020-10-13 15:38:54,577 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 15:38:54,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-13 15:38:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 316. [2020-10-13 15:38:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:38:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 475 transitions. [2020-10-13 15:38:54,583 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 475 transitions. Word has length 109 [2020-10-13 15:38:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:54,583 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 475 transitions. [2020-10-13 15:38:54,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 475 transitions. [2020-10-13 15:38:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 15:38:54,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:54,585 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] [2020-10-13 15:38:54,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:38:54,585 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:54,585 INFO L82 PathProgramCache]: Analyzing trace with hash -531902083, now seen corresponding path program 1 times [2020-10-13 15:38:54,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:54,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726252515] [2020-10-13 15:38:54,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:54,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:55,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:38:55,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:55,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1238 [2020-10-13 15:38:55,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:55,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:55,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:38:55,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:38:55,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:55,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:55,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:55,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:55,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:55,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:55,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:55,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726252515] [2020-10-13 15:38:55,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:55,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:55,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654765014] [2020-10-13 15:38:55,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:55,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:55,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:55,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:55,908 INFO L87 Difference]: Start difference. First operand 316 states and 475 transitions. Second operand 5 states. [2020-10-13 15:38:56,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:56,565 INFO L93 Difference]: Finished difference Result 654 states and 991 transitions. [2020-10-13 15:38:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:56,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 15:38:56,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:56,569 INFO L225 Difference]: With dead ends: 654 [2020-10-13 15:38:56,569 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:38:56,570 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 15:38:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:38:56,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:38:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 511 transitions. [2020-10-13 15:38:56,575 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 511 transitions. Word has length 111 [2020-10-13 15:38:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:56,575 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 511 transitions. [2020-10-13 15:38:56,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 511 transitions. [2020-10-13 15:38:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:38:56,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:56,577 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] [2020-10-13 15:38:56,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:38:56,577 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:56,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:56,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2034175431, now seen corresponding path program 1 times [2020-10-13 15:38:56,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:56,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369312608] [2020-10-13 15:38:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:57,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:38:57,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:57,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-13 15:38:57,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:38:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:57,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:57,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:57,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:57,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369312608] [2020-10-13 15:38:57,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:57,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:57,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324197821] [2020-10-13 15:38:57,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:57,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:57,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:57,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:57,348 INFO L87 Difference]: Start difference. First operand 337 states and 511 transitions. Second operand 5 states. [2020-10-13 15:38:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:58,329 INFO L93 Difference]: Finished difference Result 763 states and 1168 transitions. [2020-10-13 15:38:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:58,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:38:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:58,332 INFO L225 Difference]: With dead ends: 763 [2020-10-13 15:38:58,332 INFO L226 Difference]: Without dead ends: 451 [2020-10-13 15:38:58,332 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 15:38:58,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-13 15:38:58,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 365. [2020-10-13 15:38:58,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:38:58,340 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 112 [2020-10-13 15:38:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:58,340 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:38:58,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:58,340 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:38:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:38:58,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:58,341 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] [2020-10-13 15:38:58,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:38:58,341 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:58,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:58,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2043726425, now seen corresponding path program 1 times [2020-10-13 15:38:58,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:58,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001438182] [2020-10-13 15:38:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:59,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:38:59,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-13 15:38:59,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:38:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:59,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:59,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:59,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:59,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:59,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:59,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:59,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:59,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:59,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001438182] [2020-10-13 15:38:59,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:59,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:59,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344000484] [2020-10-13 15:38:59,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:59,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:59,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:59,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:59,104 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:39:00,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:00,101 INFO L93 Difference]: Finished difference Result 819 states and 1268 transitions. [2020-10-13 15:39:00,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:00,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:39:00,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:00,104 INFO L225 Difference]: With dead ends: 819 [2020-10-13 15:39:00,105 INFO L226 Difference]: Without dead ends: 479 [2020-10-13 15:39:00,105 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 15:39:00,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-13 15:39:00,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 365. [2020-10-13 15:39:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:39:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:39:00,112 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 112 [2020-10-13 15:39:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:00,113 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:39:00,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:39:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:39:00,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:00,114 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] [2020-10-13 15:39:00,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:39:00,115 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:00,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:00,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1946254642, now seen corresponding path program 1 times [2020-10-13 15:39:00,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:00,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635586232] [2020-10-13 15:39:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:00,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:00,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:00,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:00,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:39:00,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-13 15:39:00,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:39:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:39:00,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:00,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:00,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:00,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:00,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:00,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:00,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:00,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:00,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635586232] [2020-10-13 15:39:00,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:00,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:00,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877002831] [2020-10-13 15:39:00,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:00,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:00,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:00,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:00,872 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:39:01,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:01,823 INFO L93 Difference]: Finished difference Result 811 states and 1254 transitions. [2020-10-13 15:39:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:01,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:39:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:01,825 INFO L225 Difference]: With dead ends: 811 [2020-10-13 15:39:01,826 INFO L226 Difference]: Without dead ends: 471 [2020-10-13 15:39:01,826 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 15:39:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-13 15:39:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 365. [2020-10-13 15:39:01,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:39:01,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:39:01,832 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 113 [2020-10-13 15:39:01,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:01,833 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:39:01,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:01,833 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:39:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:39:01,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:01,834 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] [2020-10-13 15:39:01,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:39:01,834 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:01,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:01,834 INFO L82 PathProgramCache]: Analyzing trace with hash -487806702, now seen corresponding path program 1 times [2020-10-13 15:39:01,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:01,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925613380] [2020-10-13 15:39:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:01,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:01,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:02,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:39:02,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-13 15:39:02,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:39:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:39:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:02,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:02,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:02,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:02,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:02,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:02,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:02,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:02,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925613380] [2020-10-13 15:39:02,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:02,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:02,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645603110] [2020-10-13 15:39:02,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:02,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:02,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:02,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:02,655 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:39:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:03,578 INFO L93 Difference]: Finished difference Result 783 states and 1204 transitions. [2020-10-13 15:39:03,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:03,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:39:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:03,581 INFO L225 Difference]: With dead ends: 783 [2020-10-13 15:39:03,581 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 15:39:03,582 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 15:39:03,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 15:39:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 337. [2020-10-13 15:39:03,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 511 transitions. [2020-10-13 15:39:03,588 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 511 transitions. Word has length 113 [2020-10-13 15:39:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:03,588 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 511 transitions. [2020-10-13 15:39:03,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:03,588 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 511 transitions. [2020-10-13 15:39:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:39:03,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:03,589 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] [2020-10-13 15:39:03,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:39:03,589 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:03,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:03,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1492015947, now seen corresponding path program 1 times [2020-10-13 15:39:03,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:03,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756573311] [2020-10-13 15:39:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:03,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:04,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:04,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:39:04,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:04,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-13 15:39:04,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:39:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:04,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:04,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:04,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:04,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:04,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:04,718 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 15:39:04,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756573311] [2020-10-13 15:39:04,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:04,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:04,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912755091] [2020-10-13 15:39:04,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:04,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:04,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:04,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:04,719 INFO L87 Difference]: Start difference. First operand 337 states and 511 transitions. Second operand 5 states. [2020-10-13 15:39:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:05,446 INFO L93 Difference]: Finished difference Result 679 states and 1034 transitions. [2020-10-13 15:39:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:05,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:39:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:05,448 INFO L225 Difference]: With dead ends: 679 [2020-10-13 15:39:05,448 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 15:39:05,449 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 15:39:05,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 15:39:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 337. [2020-10-13 15:39:05,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 510 transitions. [2020-10-13 15:39:05,455 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 510 transitions. Word has length 114 [2020-10-13 15:39:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:05,455 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 510 transitions. [2020-10-13 15:39:05,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 510 transitions. [2020-10-13 15:39:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:39:05,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:05,456 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] [2020-10-13 15:39:05,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:39:05,456 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:05,456 INFO L82 PathProgramCache]: Analyzing trace with hash 225970900, now seen corresponding path program 1 times [2020-10-13 15:39:05,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:05,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394753655] [2020-10-13 15:39:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:06,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:39:06,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-13 15:39:06,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:39:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:39:06,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:06,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:06,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:06,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:06,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:06,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394753655] [2020-10-13 15:39:06,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:06,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:06,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740116100] [2020-10-13 15:39:06,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:06,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:06,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:06,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:06,242 INFO L87 Difference]: Start difference. First operand 337 states and 510 transitions. Second operand 5 states. [2020-10-13 15:39:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:07,202 INFO L93 Difference]: Finished difference Result 763 states and 1166 transitions. [2020-10-13 15:39:07,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:07,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:39:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:07,205 INFO L225 Difference]: With dead ends: 763 [2020-10-13 15:39:07,205 INFO L226 Difference]: Without dead ends: 451 [2020-10-13 15:39:07,206 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 15:39:07,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-13 15:39:07,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 365. [2020-10-13 15:39:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:39:07,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:39:07,212 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 114 [2020-10-13 15:39:07,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:07,212 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:39:07,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:07,212 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:39:07,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:39:07,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:07,213 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] [2020-10-13 15:39:07,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:39:07,213 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:07,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:07,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1003653129, now seen corresponding path program 1 times [2020-10-13 15:39:07,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:07,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061918799] [2020-10-13 15:39:07,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:07,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:39:07,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-13 15:39:07,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:07,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:07,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:39:07,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:39:07,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:07,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:07,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:07,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:07,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:07,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:07,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061918799] [2020-10-13 15:39:07,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:07,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:07,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609202152] [2020-10-13 15:39:07,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:07,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:07,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:07,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:07,945 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:39:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:08,885 INFO L93 Difference]: Finished difference Result 783 states and 1202 transitions. [2020-10-13 15:39:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:08,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:39:08,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:08,887 INFO L225 Difference]: With dead ends: 783 [2020-10-13 15:39:08,888 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 15:39:08,888 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 15:39:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 15:39:08,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 337. [2020-10-13 15:39:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:08,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 510 transitions. [2020-10-13 15:39:08,894 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 510 transitions. Word has length 115 [2020-10-13 15:39:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:08,894 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 510 transitions. [2020-10-13 15:39:08,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 510 transitions. [2020-10-13 15:39:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:39:08,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:08,895 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] [2020-10-13 15:39:08,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:39:08,896 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:08,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1637739786, now seen corresponding path program 1 times [2020-10-13 15:39:08,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:08,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728232442] [2020-10-13 15:39:08,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:09,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:39:09,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:09,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-10-13 15:39:09,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:09,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:39:09,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:09,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:09,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:09,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:09,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:09,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:09,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:09,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728232442] [2020-10-13 15:39:09,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:09,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:09,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351518529] [2020-10-13 15:39:09,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:09,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:09,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:09,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:09,900 INFO L87 Difference]: Start difference. First operand 337 states and 510 transitions. Second operand 5 states. [2020-10-13 15:39:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:10,650 INFO L93 Difference]: Finished difference Result 677 states and 1030 transitions. [2020-10-13 15:39:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:10,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:39:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:10,654 INFO L225 Difference]: With dead ends: 677 [2020-10-13 15:39:10,654 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:39:10,655 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 15:39:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:39:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2020-10-13 15:39:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 509 transitions. [2020-10-13 15:39:10,661 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 509 transitions. Word has length 115 [2020-10-13 15:39:10,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:10,661 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 509 transitions. [2020-10-13 15:39:10,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 509 transitions. [2020-10-13 15:39:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:39:10,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:10,662 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] [2020-10-13 15:39:10,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:39:10,662 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:10,663 INFO L82 PathProgramCache]: Analyzing trace with hash 461965059, now seen corresponding path program 1 times [2020-10-13 15:39:10,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:10,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693008872] [2020-10-13 15:39:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:10,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:15,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:39:15,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:39:15,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:39:15,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:15,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:15,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:15,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:15,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:15,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:15,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:15,756 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 15:39:15,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693008872] [2020-10-13 15:39:15,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:15,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:15,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640524806] [2020-10-13 15:39:15,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:15,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:15,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:15,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:15,757 INFO L87 Difference]: Start difference. First operand 337 states and 509 transitions. Second operand 5 states. [2020-10-13 15:39:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:16,445 INFO L93 Difference]: Finished difference Result 676 states and 1025 transitions. [2020-10-13 15:39:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:16,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:39:16,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:16,448 INFO L225 Difference]: With dead ends: 676 [2020-10-13 15:39:16,449 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 15:39:16,450 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 15:39:16,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 15:39:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 337. [2020-10-13 15:39:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:16,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 508 transitions. [2020-10-13 15:39:16,455 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 508 transitions. Word has length 116 [2020-10-13 15:39:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:16,455 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 508 transitions. [2020-10-13 15:39:16,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 508 transitions. [2020-10-13 15:39:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:39:16,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:16,456 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] [2020-10-13 15:39:16,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:39:16,456 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:16,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:16,457 INFO L82 PathProgramCache]: Analyzing trace with hash 846123597, now seen corresponding path program 1 times [2020-10-13 15:39:16,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:16,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795068803] [2020-10-13 15:39:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:16,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:16,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:17,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:39:17,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-13 15:39:17,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:39:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:17,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:17,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:17,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:17,091 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 15:39:17,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795068803] [2020-10-13 15:39:17,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:17,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:17,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117109547] [2020-10-13 15:39:17,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:17,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:17,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:17,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:17,092 INFO L87 Difference]: Start difference. First operand 337 states and 508 transitions. Second operand 5 states. [2020-10-13 15:39:17,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:17,754 INFO L93 Difference]: Finished difference Result 675 states and 1022 transitions. [2020-10-13 15:39:17,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:17,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:39:17,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:17,758 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:39:17,758 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:39:17,758 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 15:39:17,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:39:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:39:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 507 transitions. [2020-10-13 15:39:17,765 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 507 transitions. Word has length 116 [2020-10-13 15:39:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:17,766 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 507 transitions. [2020-10-13 15:39:17,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:17,766 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 507 transitions. [2020-10-13 15:39:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:39:17,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:17,767 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] [2020-10-13 15:39:17,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:39:17,767 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:17,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:17,768 INFO L82 PathProgramCache]: Analyzing trace with hash -557887962, now seen corresponding path program 1 times [2020-10-13 15:39:17,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:17,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768246455] [2020-10-13 15:39:17,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:18,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:18,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:22,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:22,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:39:22,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:39:22,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:39:22,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:22,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:22,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:22,888 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 15:39:22,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768246455] [2020-10-13 15:39:22,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:22,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:22,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644720357] [2020-10-13 15:39:22,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:22,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:22,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:22,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:22,889 INFO L87 Difference]: Start difference. First operand 337 states and 507 transitions. Second operand 5 states. [2020-10-13 15:39:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:23,584 INFO L93 Difference]: Finished difference Result 675 states and 1020 transitions. [2020-10-13 15:39:23,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:23,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:39:23,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:23,587 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:39:23,587 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:39:23,588 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 15:39:23,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:39:23,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:39:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 506 transitions. [2020-10-13 15:39:23,594 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 506 transitions. Word has length 117 [2020-10-13 15:39:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:23,594 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 506 transitions. [2020-10-13 15:39:23,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 506 transitions. [2020-10-13 15:39:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:39:23,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:23,595 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] [2020-10-13 15:39:23,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:39:23,595 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:23,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:23,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1796619769, now seen corresponding path program 1 times [2020-10-13 15:39:23,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:23,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948950065] [2020-10-13 15:39:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:23,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:24,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:28,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:28,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:39:28,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:28,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 15:39:28,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:28,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:28,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:28,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:28,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:28,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:28,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:28,708 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 15:39:28,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948950065] [2020-10-13 15:39:28,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:28,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:28,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689745265] [2020-10-13 15:39:28,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:28,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:28,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:28,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:28,709 INFO L87 Difference]: Start difference. First operand 337 states and 506 transitions. Second operand 5 states. [2020-10-13 15:39:29,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:29,372 INFO L93 Difference]: Finished difference Result 675 states and 1018 transitions. [2020-10-13 15:39:29,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:29,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:39:29,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:29,374 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:39:29,374 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:39:29,375 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 15:39:29,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:39:29,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:39:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 505 transitions. [2020-10-13 15:39:29,380 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 505 transitions. Word has length 118 [2020-10-13 15:39:29,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:29,381 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 505 transitions. [2020-10-13 15:39:29,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 505 transitions. [2020-10-13 15:39:29,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:39:29,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:29,382 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] [2020-10-13 15:39:29,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:39:29,382 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:29,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash 255845472, now seen corresponding path program 1 times [2020-10-13 15:39:29,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:29,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504585821] [2020-10-13 15:39:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:29,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:30,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:30,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:39:30,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:30,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-10-13 15:39:30,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:39:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:30,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:30,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:30,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:30,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:30,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:30,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:30,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:30,433 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 15:39:30,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504585821] [2020-10-13 15:39:30,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:30,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:30,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380712162] [2020-10-13 15:39:30,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:30,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:30,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:30,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:30,435 INFO L87 Difference]: Start difference. First operand 337 states and 505 transitions. Second operand 5 states. [2020-10-13 15:39:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:31,190 INFO L93 Difference]: Finished difference Result 677 states and 1020 transitions. [2020-10-13 15:39:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:31,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:39:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:31,194 INFO L225 Difference]: With dead ends: 677 [2020-10-13 15:39:31,195 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:39:31,195 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 15:39:31,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:39:31,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2020-10-13 15:39:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 504 transitions. [2020-10-13 15:39:31,201 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 504 transitions. Word has length 119 [2020-10-13 15:39:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:31,201 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 504 transitions. [2020-10-13 15:39:31,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:31,202 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 504 transitions. [2020-10-13 15:39:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:39:31,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:31,203 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] [2020-10-13 15:39:31,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:39:31,203 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:31,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1465034816, now seen corresponding path program 1 times [2020-10-13 15:39:31,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:31,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863835520] [2020-10-13 15:39:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:31,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:32,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:39:32,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-10-13 15:39:32,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:39:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:32,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:32,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:32,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:32,215 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 15:39:32,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863835520] [2020-10-13 15:39:32,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:32,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:32,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107765203] [2020-10-13 15:39:32,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:32,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:32,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:32,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:32,218 INFO L87 Difference]: Start difference. First operand 337 states and 504 transitions. Second operand 5 states. [2020-10-13 15:39:32,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:32,981 INFO L93 Difference]: Finished difference Result 677 states and 1018 transitions. [2020-10-13 15:39:32,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:32,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:39:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:32,985 INFO L225 Difference]: With dead ends: 677 [2020-10-13 15:39:32,985 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:39:32,986 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 15:39:32,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:39:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2020-10-13 15:39:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 503 transitions. [2020-10-13 15:39:32,993 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 503 transitions. Word has length 119 [2020-10-13 15:39:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:32,993 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 503 transitions. [2020-10-13 15:39:32,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 503 transitions. [2020-10-13 15:39:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:39:32,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:32,995 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] [2020-10-13 15:39:32,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:39:32,995 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:32,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:32,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1470332577, now seen corresponding path program 1 times [2020-10-13 15:39:32,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:32,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17129094] [2020-10-13 15:39:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:33,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:38,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:39:38,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:38,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:39:38,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:39:38,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:38,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:38,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:38,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:38,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:38,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:38,082 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 15:39:38,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17129094] [2020-10-13 15:39:38,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:38,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:38,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807017436] [2020-10-13 15:39:38,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:38,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:38,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:38,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:38,084 INFO L87 Difference]: Start difference. First operand 337 states and 503 transitions. Second operand 5 states. [2020-10-13 15:39:38,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:38,777 INFO L93 Difference]: Finished difference Result 675 states and 1012 transitions. [2020-10-13 15:39:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:38,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:39:38,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:38,779 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:39:38,780 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:39:38,780 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 15:39:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:39:38,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:39:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 502 transitions. [2020-10-13 15:39:38,787 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 502 transitions. Word has length 119 [2020-10-13 15:39:38,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:38,787 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 502 transitions. [2020-10-13 15:39:38,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:38,787 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 502 transitions. [2020-10-13 15:39:38,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:39:38,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:38,788 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] [2020-10-13 15:39:38,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 15:39:38,788 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:38,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:38,789 INFO L82 PathProgramCache]: Analyzing trace with hash 512354618, now seen corresponding path program 1 times [2020-10-13 15:39:38,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:38,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226065946] [2020-10-13 15:39:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:38,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:39,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:39:39,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-13 15:39:39,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:39,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:39,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:39:39,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:39:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:39,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:39,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:39,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:39,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:39,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:39,807 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 15:39:39,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226065946] [2020-10-13 15:39:39,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:39,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:39,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177370439] [2020-10-13 15:39:39,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:39,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:39,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:39,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:39,809 INFO L87 Difference]: Start difference. First operand 337 states and 502 transitions. Second operand 5 states. [2020-10-13 15:39:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:40,660 INFO L93 Difference]: Finished difference Result 736 states and 1106 transitions. [2020-10-13 15:39:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:40,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:39:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:40,663 INFO L225 Difference]: With dead ends: 736 [2020-10-13 15:39:40,663 INFO L226 Difference]: Without dead ends: 424 [2020-10-13 15:39:40,664 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 15:39:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-13 15:39:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 374. [2020-10-13 15:39:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-13 15:39:40,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 568 transitions. [2020-10-13 15:39:40,671 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 568 transitions. Word has length 120 [2020-10-13 15:39:40,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:40,672 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 568 transitions. [2020-10-13 15:39:40,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 568 transitions. [2020-10-13 15:39:40,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:39:40,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:40,673 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] [2020-10-13 15:39:40,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 15:39:40,673 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:40,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:40,674 INFO L82 PathProgramCache]: Analyzing trace with hash -228834118, now seen corresponding path program 1 times [2020-10-13 15:39:40,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:40,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017539830] [2020-10-13 15:39:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:40,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:40,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:41,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:41,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:39:41,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-10-13 15:39:41,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:39:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:39:41,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:41,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:41,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:41,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:41,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:41,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:41,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:41,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:41,712 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 15:39:41,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017539830] [2020-10-13 15:39:41,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:41,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:41,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427114187] [2020-10-13 15:39:41,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:41,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:41,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:41,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:41,713 INFO L87 Difference]: Start difference. First operand 374 states and 568 transitions. Second operand 5 states. [2020-10-13 15:39:42,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:42,589 INFO L93 Difference]: Finished difference Result 806 states and 1232 transitions. [2020-10-13 15:39:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:42,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:39:42,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:42,596 INFO L225 Difference]: With dead ends: 806 [2020-10-13 15:39:42,596 INFO L226 Difference]: Without dead ends: 457 [2020-10-13 15:39:42,597 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 15:39:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-13 15:39:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 409. [2020-10-13 15:39:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-10-13 15:39:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 630 transitions. [2020-10-13 15:39:42,605 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 630 transitions. Word has length 120 [2020-10-13 15:39:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:42,606 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 630 transitions. [2020-10-13 15:39:42,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 630 transitions. [2020-10-13 15:39:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:39:42,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:42,607 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:42,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-13 15:39:42,607 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:42,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1615394398, now seen corresponding path program 1 times [2020-10-13 15:39:42,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:42,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238222444] [2020-10-13 15:39:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:42,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:43,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking...