/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.14.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:38:04,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:38:04,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:38:04,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:38:04,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:38:04,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:38:04,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:38:04,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:38:04,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:38:04,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:38:04,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:38:04,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:38:04,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:38:04,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:38:04,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:38:04,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:38:04,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:38:04,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:38:04,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:38:04,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:38:04,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:38:04,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:38:04,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:38:04,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:38:04,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:38:04,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:38:04,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:38:04,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:38:04,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:38:04,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:38:04,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:38:04,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:38:04,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:38:04,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:38:04,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:38:04,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:38:04,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:38:04,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:38:04,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:38:04,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:38:04,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:38:04,722 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 15:38:04,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:38:04,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:38:04,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:38:04,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:38:04,775 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:38:04,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:38:04,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:38:04,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:38:04,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:38:04,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:38:04,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:38:04,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:38:04,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:38:04,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:38:04,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:38:04,779 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:38:04,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:38:04,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:38:04,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:38:04,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:38:04,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:38:04,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:38:04,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:38:04,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:38:04,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:38:04,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:38:04,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:38:04,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:38:04,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:38:04,782 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 15:38:05,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:38:05,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:38:05,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:38:05,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:38:05,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:38:05,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.14.i.cil-1.c [2020-10-13 15:38:05,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/341c0229c/67a182c4c472475aa5e30b090b674329/FLAG4e6aa92e2 [2020-10-13 15:38:05,808 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:38:05,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.14.i.cil-1.c [2020-10-13 15:38:05,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/341c0229c/67a182c4c472475aa5e30b090b674329/FLAG4e6aa92e2 [2020-10-13 15:38:05,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/341c0229c/67a182c4c472475aa5e30b090b674329 [2020-10-13 15:38:05,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:38:05,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:38:05,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:38:05,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:38:06,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:38:06,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:38:05" (1/1) ... [2020-10-13 15:38:06,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b989355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06, skipping insertion in model container [2020-10-13 15:38:06,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:38:05" (1/1) ... [2020-10-13 15:38:06,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:38:06,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:38:06,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:38:06,712 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:38:06,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:38:06,876 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:38:06,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06 WrapperNode [2020-10-13 15:38:06,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:38:06,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:38:06,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:38:06,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:38:06,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06" (1/1) ... [2020-10-13 15:38:06,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06" (1/1) ... [2020-10-13 15:38:06,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06" (1/1) ... [2020-10-13 15:38:06,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06" (1/1) ... [2020-10-13 15:38:06,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06" (1/1) ... [2020-10-13 15:38:07,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06" (1/1) ... [2020-10-13 15:38:07,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06" (1/1) ... [2020-10-13 15:38:07,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:38:07,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:38:07,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:38:07,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:38:07,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06" (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 15:38:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:38:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:38:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:38:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:38:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:38:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:38:07,153 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:38:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:38:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:38:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:38:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:38:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:38:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:38:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:38:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:38:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:38:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:38:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:38:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:38:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:38:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:38:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:38:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:38:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:38:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:38:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:38:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:38:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:38:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:38:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:38:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:38:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:38:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:38:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:38:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:38:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:38:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:38:07,823 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:38:08,545 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:38:08,545 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:38:08,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:38:08,569 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:38:08,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:38:08 BoogieIcfgContainer [2020-10-13 15:38:08,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:38:08,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:38:08,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:38:08,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:38:08,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:38:05" (1/3) ... [2020-10-13 15:38:08,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8af2f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:38:08, skipping insertion in model container [2020-10-13 15:38:08,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:38:06" (2/3) ... [2020-10-13 15:38:08,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8af2f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:38:08, skipping insertion in model container [2020-10-13 15:38:08,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:38:08" (3/3) ... [2020-10-13 15:38:08,582 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.14.i.cil-1.c [2020-10-13 15:38:08,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:38:08,600 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:38:08,614 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:38:08,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:38:08,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:38:08,638 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:38:08,638 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:38:08,638 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:38:08,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:38:08,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:38:08,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:38:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-10-13 15:38:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 15:38:08,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:08,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:08,673 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:08,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:08,679 INFO L82 PathProgramCache]: Analyzing trace with hash 5692544, now seen corresponding path program 1 times [2020-10-13 15:38:08,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:08,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990861875] [2020-10-13 15:38:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:08,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 15:38:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1307 [2020-10-13 15:38:10,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:38:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 15:38:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:10,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:10,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:10,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:38:10,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:10,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:10,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:10,341 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 15:38:10,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990861875] [2020-10-13 15:38:10,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:10,344 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 [1840365285] [2020-10-13 15:38:10,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:10,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:10,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:10,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:10,368 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 5 states. [2020-10-13 15:38:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:11,589 INFO L93 Difference]: Finished difference Result 345 states and 582 transitions. [2020-10-13 15:38:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:11,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-13 15:38:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:11,615 INFO L225 Difference]: With dead ends: 345 [2020-10-13 15:38:11,615 INFO L226 Difference]: Without dead ends: 175 [2020-10-13 15:38:11,622 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 15:38:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-13 15:38:11,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2020-10-13 15:38:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 15:38:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 244 transitions. [2020-10-13 15:38:11,672 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 244 transitions. Word has length 49 [2020-10-13 15:38:11,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:11,673 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 244 transitions. [2020-10-13 15:38:11,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:11,673 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 244 transitions. [2020-10-13 15:38:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 15:38:11,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:11,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:11,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:38:11,677 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:11,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1878921356, now seen corresponding path program 1 times [2020-10-13 15:38:11,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:11,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762640456] [2020-10-13 15:38:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:11,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:38:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-13 15:38:12,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:38:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:12,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:12,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:12,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:12,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:38:12,887 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 15:38:12,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762640456] [2020-10-13 15:38:12,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:12,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:12,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365292073] [2020-10-13 15:38:12,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:12,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:12,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:12,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:12,907 INFO L87 Difference]: Start difference. First operand 158 states and 244 transitions. Second operand 5 states. [2020-10-13 15:38:13,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:13,770 INFO L93 Difference]: Finished difference Result 308 states and 473 transitions. [2020-10-13 15:38:13,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:13,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-13 15:38:13,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:13,774 INFO L225 Difference]: With dead ends: 308 [2020-10-13 15:38:13,774 INFO L226 Difference]: Without dead ends: 175 [2020-10-13 15:38:13,779 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 15:38:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-13 15:38:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2020-10-13 15:38:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 15:38:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 243 transitions. [2020-10-13 15:38:13,803 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 243 transitions. Word has length 62 [2020-10-13 15:38:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:13,803 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 243 transitions. [2020-10-13 15:38:13,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 243 transitions. [2020-10-13 15:38:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:38:13,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:13,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:13,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:38:13,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:13,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1367519392, now seen corresponding path program 1 times [2020-10-13 15:38:13,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:13,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476307471] [2020-10-13 15:38:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:18,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 15:38:18,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4241 [2020-10-13 15:38:18,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:38:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:18,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:18,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:18,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:18,186 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 15:38:18,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476307471] [2020-10-13 15:38:18,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:18,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:18,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626304861] [2020-10-13 15:38:18,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:18,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:18,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:18,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:18,189 INFO L87 Difference]: Start difference. First operand 158 states and 243 transitions. Second operand 5 states. [2020-10-13 15:38:19,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:19,031 INFO L93 Difference]: Finished difference Result 307 states and 471 transitions. [2020-10-13 15:38:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:19,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:38:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:19,034 INFO L225 Difference]: With dead ends: 307 [2020-10-13 15:38:19,034 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 15:38:19,037 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 15:38:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 15:38:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 158. [2020-10-13 15:38:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 15:38:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 242 transitions. [2020-10-13 15:38:19,064 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 242 transitions. Word has length 63 [2020-10-13 15:38:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:19,065 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 242 transitions. [2020-10-13 15:38:19,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 242 transitions. [2020-10-13 15:38:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:38:19,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:19,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:19,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:38:19,068 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:19,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:19,073 INFO L82 PathProgramCache]: Analyzing trace with hash 519384052, now seen corresponding path program 1 times [2020-10-13 15:38:19,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:19,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351734789] [2020-10-13 15:38:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:24,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:24,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 15:38:24,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:38:24,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:38:24,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:38:24,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:38:24,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:38:24,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:24,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:24,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:24,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:24,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:24,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:24,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:24,208 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 15:38:24,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351734789] [2020-10-13 15:38:24,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:24,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:38:24,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084285360] [2020-10-13 15:38:24,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:38:24,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:24,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:38:24,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:24,211 INFO L87 Difference]: Start difference. First operand 158 states and 242 transitions. Second operand 6 states. [2020-10-13 15:38:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:25,271 INFO L93 Difference]: Finished difference Result 415 states and 646 transitions. [2020-10-13 15:38:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:38:25,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-13 15:38:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:25,276 INFO L225 Difference]: With dead ends: 415 [2020-10-13 15:38:25,276 INFO L226 Difference]: Without dead ends: 282 [2020-10-13 15:38:25,277 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 15:38:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-13 15:38:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 183. [2020-10-13 15:38:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-13 15:38:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 279 transitions. [2020-10-13 15:38:25,290 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 279 transitions. Word has length 63 [2020-10-13 15:38:25,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:25,291 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 279 transitions. [2020-10-13 15:38:25,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:38:25,291 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 279 transitions. [2020-10-13 15:38:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:38:25,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:25,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:25,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:38:25,294 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:25,294 INFO L82 PathProgramCache]: Analyzing trace with hash 740904553, now seen corresponding path program 1 times [2020-10-13 15:38:25,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:25,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688858215] [2020-10-13 15:38:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:26,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 15:38:26,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-13 15:38:26,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:38:26,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:26,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:26,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:26,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:26,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:38:26,096 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 15:38:26,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688858215] [2020-10-13 15:38:26,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:26,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:26,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538958848] [2020-10-13 15:38:26,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:26,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:26,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:26,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:26,098 INFO L87 Difference]: Start difference. First operand 183 states and 279 transitions. Second operand 5 states. [2020-10-13 15:38:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:26,839 INFO L93 Difference]: Finished difference Result 355 states and 541 transitions. [2020-10-13 15:38:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:26,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:38:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:26,841 INFO L225 Difference]: With dead ends: 355 [2020-10-13 15:38:26,842 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 15:38:26,843 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 15:38:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 15:38:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 183. [2020-10-13 15:38:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-13 15:38:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 278 transitions. [2020-10-13 15:38:26,854 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 278 transitions. Word has length 63 [2020-10-13 15:38:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:26,862 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 278 transitions. [2020-10-13 15:38:26,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 278 transitions. [2020-10-13 15:38:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:38:26,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:26,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:26,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:38:26,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:26,865 INFO L82 PathProgramCache]: Analyzing trace with hash 808464554, now seen corresponding path program 1 times [2020-10-13 15:38:26,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:26,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490073005] [2020-10-13 15:38:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 15:38:27,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-13 15:38:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:38:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:27,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:27,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:27,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:27,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:27,335 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 15:38:27,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490073005] [2020-10-13 15:38:27,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:27,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:27,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379548960] [2020-10-13 15:38:27,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:27,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:27,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:27,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:27,337 INFO L87 Difference]: Start difference. First operand 183 states and 278 transitions. Second operand 5 states. [2020-10-13 15:38:28,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:28,093 INFO L93 Difference]: Finished difference Result 354 states and 539 transitions. [2020-10-13 15:38:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:28,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:38:28,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:28,095 INFO L225 Difference]: With dead ends: 354 [2020-10-13 15:38:28,095 INFO L226 Difference]: Without dead ends: 196 [2020-10-13 15:38:28,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:28,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-13 15:38:28,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 183. [2020-10-13 15:38:28,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-13 15:38:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 277 transitions. [2020-10-13 15:38:28,104 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 277 transitions. Word has length 63 [2020-10-13 15:38:28,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:28,104 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 277 transitions. [2020-10-13 15:38:28,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 277 transitions. [2020-10-13 15:38:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:38:28,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:28,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:28,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:38:28,107 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:28,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1659970809, now seen corresponding path program 1 times [2020-10-13 15:38:28,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:28,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385070133] [2020-10-13 15:38:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:28,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:30,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:30,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:32,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:38:32,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:32,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4147 [2020-10-13 15:38:32,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:32,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:32,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:32,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:38:32,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:32,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:32,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:32,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:32,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:32,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:32,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:32,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:32,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:32,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:32,351 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 15:38:32,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385070133] [2020-10-13 15:38:32,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:32,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:32,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024651274] [2020-10-13 15:38:32,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:32,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:32,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:32,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:32,353 INFO L87 Difference]: Start difference. First operand 183 states and 277 transitions. Second operand 5 states. [2020-10-13 15:38:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:33,174 INFO L93 Difference]: Finished difference Result 354 states and 538 transitions. [2020-10-13 15:38:33,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:33,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:38:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:33,176 INFO L225 Difference]: With dead ends: 354 [2020-10-13 15:38:33,176 INFO L226 Difference]: Without dead ends: 196 [2020-10-13 15:38:33,177 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 15:38:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-13 15:38:33,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 183. [2020-10-13 15:38:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-13 15:38:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 276 transitions. [2020-10-13 15:38:33,184 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 276 transitions. Word has length 64 [2020-10-13 15:38:33,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:33,185 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 276 transitions. [2020-10-13 15:38:33,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 276 transitions. [2020-10-13 15:38:33,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:38:33,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:33,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:33,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:38:33,186 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:33,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1021818596, now seen corresponding path program 1 times [2020-10-13 15:38:33,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:33,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313448445] [2020-10-13 15:38:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:33,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:36,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:36,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:38:36,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:36,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3522 [2020-10-13 15:38:36,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:38:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:36,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:36,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:36,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:36,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:36,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:36,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:36,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:36,817 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 15:38:36,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313448445] [2020-10-13 15:38:36,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:36,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:36,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599844591] [2020-10-13 15:38:36,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:36,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:36,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:36,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:36,819 INFO L87 Difference]: Start difference. First operand 183 states and 276 transitions. Second operand 5 states. [2020-10-13 15:38:37,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:37,625 INFO L93 Difference]: Finished difference Result 354 states and 537 transitions. [2020-10-13 15:38:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:37,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:38:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:37,629 INFO L225 Difference]: With dead ends: 354 [2020-10-13 15:38:37,630 INFO L226 Difference]: Without dead ends: 196 [2020-10-13 15:38:37,631 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 15:38:37,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-13 15:38:37,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 183. [2020-10-13 15:38:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-13 15:38:37,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 275 transitions. [2020-10-13 15:38:37,639 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 275 transitions. Word has length 65 [2020-10-13 15:38:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:37,639 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 275 transitions. [2020-10-13 15:38:37,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 275 transitions. [2020-10-13 15:38:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:38:37,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:37,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:37,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:38:37,647 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:37,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1189117950, now seen corresponding path program 1 times [2020-10-13 15:38:37,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:37,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153307958] [2020-10-13 15:38:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:37,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:41,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:38:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3726 [2020-10-13 15:38:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:41,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:41,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:41,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:41,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:41,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:41,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:41,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:41,496 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 15:38:41,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153307958] [2020-10-13 15:38:41,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:41,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:41,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574867451] [2020-10-13 15:38:41,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:41,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:41,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:41,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:41,498 INFO L87 Difference]: Start difference. First operand 183 states and 275 transitions. Second operand 5 states. [2020-10-13 15:38:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:42,461 INFO L93 Difference]: Finished difference Result 354 states and 536 transitions. [2020-10-13 15:38:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:42,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:38:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:42,463 INFO L225 Difference]: With dead ends: 354 [2020-10-13 15:38:42,463 INFO L226 Difference]: Without dead ends: 196 [2020-10-13 15:38:42,464 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 15:38:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-13 15:38:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 183. [2020-10-13 15:38:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-13 15:38:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 274 transitions. [2020-10-13 15:38:42,472 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 274 transitions. Word has length 66 [2020-10-13 15:38:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:42,472 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 274 transitions. [2020-10-13 15:38:42,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:42,472 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 274 transitions. [2020-10-13 15:38:42,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:38:42,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:42,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:42,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:38:42,474 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:42,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:42,474 INFO L82 PathProgramCache]: Analyzing trace with hash 959478563, now seen corresponding path program 1 times [2020-10-13 15:38:42,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:42,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825361381] [2020-10-13 15:38:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:42,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:43,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:43,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:38:43,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:43,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-13 15:38:43,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:38:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:43,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:43,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:43,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:43,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:43,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:43,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:43,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:43,105 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 15:38:43,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825361381] [2020-10-13 15:38:43,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:43,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:43,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065417915] [2020-10-13 15:38:43,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:43,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:43,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:43,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:43,108 INFO L87 Difference]: Start difference. First operand 183 states and 274 transitions. Second operand 5 states. [2020-10-13 15:38:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:43,928 INFO L93 Difference]: Finished difference Result 384 states and 584 transitions. [2020-10-13 15:38:43,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:43,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:38:43,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:43,931 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:38:43,931 INFO L226 Difference]: Without dead ends: 226 [2020-10-13 15:38:43,932 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 15:38:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-13 15:38:43,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 205. [2020-10-13 15:38:43,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 15:38:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 312 transitions. [2020-10-13 15:38:43,941 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 312 transitions. Word has length 66 [2020-10-13 15:38:43,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:43,941 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 312 transitions. [2020-10-13 15:38:43,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:43,942 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 312 transitions. [2020-10-13 15:38:43,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:38:43,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:43,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:43,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:38:43,943 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:43,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:43,944 INFO L82 PathProgramCache]: Analyzing trace with hash -455736321, now seen corresponding path program 1 times [2020-10-13 15:38:43,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:43,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316653209] [2020-10-13 15:38:43,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:43,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:44,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:44,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:46,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 15:38:46,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:46,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2694 [2020-10-13 15:38:46,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:38:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:38:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:46,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:46,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:46,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:46,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:46,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:46,728 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 15:38:46,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316653209] [2020-10-13 15:38:46,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:46,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:46,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888562295] [2020-10-13 15:38:46,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:46,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:46,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:46,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:46,730 INFO L87 Difference]: Start difference. First operand 205 states and 312 transitions. Second operand 5 states. [2020-10-13 15:38:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:47,502 INFO L93 Difference]: Finished difference Result 388 states and 599 transitions. [2020-10-13 15:38:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:47,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-13 15:38:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:47,507 INFO L225 Difference]: With dead ends: 388 [2020-10-13 15:38:47,507 INFO L226 Difference]: Without dead ends: 208 [2020-10-13 15:38:47,508 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 15:38:47,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-13 15:38:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2020-10-13 15:38:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 15:38:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 311 transitions. [2020-10-13 15:38:47,516 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 311 transitions. Word has length 67 [2020-10-13 15:38:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:47,516 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 311 transitions. [2020-10-13 15:38:47,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:47,516 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 311 transitions. [2020-10-13 15:38:47,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 15:38:47,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:47,518 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:47,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:38:47,518 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:47,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:47,518 INFO L82 PathProgramCache]: Analyzing trace with hash -764636471, now seen corresponding path program 1 times [2020-10-13 15:38:47,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:47,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700547924] [2020-10-13 15:38:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:48,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 15:38:48,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-10-13 15:38:48,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:48,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:48,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:48,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:48,384 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 15:38:48,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700547924] [2020-10-13 15:38:48,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:48,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:48,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512753720] [2020-10-13 15:38:48,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:48,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:48,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:48,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:48,386 INFO L87 Difference]: Start difference. First operand 205 states and 311 transitions. Second operand 5 states. [2020-10-13 15:38:49,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:49,168 INFO L93 Difference]: Finished difference Result 406 states and 620 transitions. [2020-10-13 15:38:49,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:49,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-13 15:38:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:49,171 INFO L225 Difference]: With dead ends: 406 [2020-10-13 15:38:49,171 INFO L226 Difference]: Without dead ends: 226 [2020-10-13 15:38:49,172 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 15:38:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-13 15:38:49,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 205. [2020-10-13 15:38:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 15:38:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 310 transitions. [2020-10-13 15:38:49,180 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 310 transitions. Word has length 79 [2020-10-13 15:38:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:49,180 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 310 transitions. [2020-10-13 15:38:49,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:49,180 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 310 transitions. [2020-10-13 15:38:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:38:49,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:49,182 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:49,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:38:49,182 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:49,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:49,183 INFO L82 PathProgramCache]: Analyzing trace with hash 394990540, now seen corresponding path program 1 times [2020-10-13 15:38:49,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:49,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769229551] [2020-10-13 15:38:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:49,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:38:49,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-10-13 15:38:49,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:38:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:50,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:50,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:50,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:50,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:50,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:50,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:50,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:50,038 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 15:38:50,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769229551] [2020-10-13 15:38:50,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:50,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:50,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700814152] [2020-10-13 15:38:50,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:50,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:50,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:50,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:50,040 INFO L87 Difference]: Start difference. First operand 205 states and 310 transitions. Second operand 5 states. [2020-10-13 15:38:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:50,754 INFO L93 Difference]: Finished difference Result 404 states and 616 transitions. [2020-10-13 15:38:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:50,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:38:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:50,757 INFO L225 Difference]: With dead ends: 404 [2020-10-13 15:38:50,757 INFO L226 Difference]: Without dead ends: 224 [2020-10-13 15:38:50,758 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 15:38:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-13 15:38:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 205. [2020-10-13 15:38:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 15:38:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 309 transitions. [2020-10-13 15:38:50,765 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 309 transitions. Word has length 80 [2020-10-13 15:38:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:50,766 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 309 transitions. [2020-10-13 15:38:50,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 309 transitions. [2020-10-13 15:38:50,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:38:50,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:50,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:50,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:38:50,768 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:50,768 INFO L82 PathProgramCache]: Analyzing trace with hash 462550541, now seen corresponding path program 1 times [2020-10-13 15:38:50,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:50,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914404072] [2020-10-13 15:38:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:50,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:50,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:51,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:38:51,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:51,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-13 15:38:51,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:38:51,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:51,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:51,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:51,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:51,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:51,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:51,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:51,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:51,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:51,205 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 15:38:51,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914404072] [2020-10-13 15:38:51,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:51,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:51,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209789041] [2020-10-13 15:38:51,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:51,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:51,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:51,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:51,206 INFO L87 Difference]: Start difference. First operand 205 states and 309 transitions. Second operand 5 states. [2020-10-13 15:38:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:51,905 INFO L93 Difference]: Finished difference Result 403 states and 613 transitions. [2020-10-13 15:38:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:51,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:38:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:51,909 INFO L225 Difference]: With dead ends: 403 [2020-10-13 15:38:51,909 INFO L226 Difference]: Without dead ends: 223 [2020-10-13 15:38:51,910 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 15:38:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-13 15:38:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 205. [2020-10-13 15:38:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 15:38:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 308 transitions. [2020-10-13 15:38:51,918 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 308 transitions. Word has length 80 [2020-10-13 15:38:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:51,918 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 308 transitions. [2020-10-13 15:38:51,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 308 transitions. [2020-10-13 15:38:51,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:38:51,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:51,920 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:51,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:38:51,920 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:51,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:51,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2137132056, now seen corresponding path program 1 times [2020-10-13 15:38:51,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:51,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813809911] [2020-10-13 15:38:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:56,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:38:56,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:38:56,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:38:56,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:38:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:38:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:56,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:56,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:56,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:56,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:56,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:56,998 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 15:38:56,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813809911] [2020-10-13 15:38:56,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:56,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:56,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346482180] [2020-10-13 15:38:56,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:56,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:56,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:56,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:56,999 INFO L87 Difference]: Start difference. First operand 205 states and 308 transitions. Second operand 5 states. [2020-10-13 15:38:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:57,714 INFO L93 Difference]: Finished difference Result 402 states and 610 transitions. [2020-10-13 15:38:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:57,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:38:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:57,717 INFO L225 Difference]: With dead ends: 402 [2020-10-13 15:38:57,717 INFO L226 Difference]: Without dead ends: 222 [2020-10-13 15:38:57,722 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 15:38:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-13 15:38:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2020-10-13 15:38:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 15:38:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 307 transitions. [2020-10-13 15:38:57,733 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 307 transitions. Word has length 81 [2020-10-13 15:38:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:57,733 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 307 transitions. [2020-10-13 15:38:57,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 307 transitions. [2020-10-13 15:38:57,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:38:57,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:57,735 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:57,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:38:57,735 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:57,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash 501596676, now seen corresponding path program 1 times [2020-10-13 15:38:57,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:57,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539004789] [2020-10-13 15:38:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:02,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:39:02,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:02,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:39:02,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:39:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:39:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:02,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:02,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:02,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:02,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:02,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:02,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:02,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:02,807 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 15:39:02,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539004789] [2020-10-13 15:39:02,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:02,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:02,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642893381] [2020-10-13 15:39:02,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:02,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:02,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:02,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:02,809 INFO L87 Difference]: Start difference. First operand 205 states and 307 transitions. Second operand 5 states. [2020-10-13 15:39:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:03,518 INFO L93 Difference]: Finished difference Result 402 states and 608 transitions. [2020-10-13 15:39:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:03,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:39:03,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:03,521 INFO L225 Difference]: With dead ends: 402 [2020-10-13 15:39:03,521 INFO L226 Difference]: Without dead ends: 222 [2020-10-13 15:39:03,522 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 15:39:03,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-13 15:39:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2020-10-13 15:39:03,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 15:39:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 306 transitions. [2020-10-13 15:39:03,530 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 306 transitions. Word has length 81 [2020-10-13 15:39:03,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:03,530 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 306 transitions. [2020-10-13 15:39:03,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 306 transitions. [2020-10-13 15:39:03,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:39:03,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:03,532 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:03,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:39:03,532 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:03,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:03,533 INFO L82 PathProgramCache]: Analyzing trace with hash -689066105, now seen corresponding path program 1 times [2020-10-13 15:39:03,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:03,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317604491] [2020-10-13 15:39:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:03,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:08,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:39:08,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:39:08,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:39:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:08,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:08,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:08,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:08,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:08,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:08,621 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 15:39:08,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317604491] [2020-10-13 15:39:08,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:08,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:08,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183913375] [2020-10-13 15:39:08,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:08,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:08,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:08,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:08,623 INFO L87 Difference]: Start difference. First operand 205 states and 306 transitions. Second operand 5 states. [2020-10-13 15:39:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:09,336 INFO L93 Difference]: Finished difference Result 402 states and 606 transitions. [2020-10-13 15:39:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:09,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:39:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:09,338 INFO L225 Difference]: With dead ends: 402 [2020-10-13 15:39:09,338 INFO L226 Difference]: Without dead ends: 222 [2020-10-13 15:39:09,340 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 15:39:09,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-13 15:39:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2020-10-13 15:39:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 15:39:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 305 transitions. [2020-10-13 15:39:09,347 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 305 transitions. Word has length 82 [2020-10-13 15:39:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:09,348 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 305 transitions. [2020-10-13 15:39:09,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 305 transitions. [2020-10-13 15:39:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 15:39:09,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:09,349 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:09,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:39:09,350 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:09,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1608031167, now seen corresponding path program 1 times [2020-10-13 15:39:09,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:09,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917608898] [2020-10-13 15:39:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:14,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:14,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 15:39:14,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:39:14,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:39:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:39:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:14,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:14,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:14,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:14,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:14,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:14,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:14,440 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 15:39:14,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917608898] [2020-10-13 15:39:14,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:14,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:14,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545844850] [2020-10-13 15:39:14,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:14,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:14,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:14,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:14,442 INFO L87 Difference]: Start difference. First operand 205 states and 305 transitions. Second operand 5 states. [2020-10-13 15:39:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:15,133 INFO L93 Difference]: Finished difference Result 402 states and 604 transitions. [2020-10-13 15:39:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:15,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-13 15:39:15,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:15,136 INFO L225 Difference]: With dead ends: 402 [2020-10-13 15:39:15,137 INFO L226 Difference]: Without dead ends: 222 [2020-10-13 15:39:15,138 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 15:39:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-13 15:39:15,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2020-10-13 15:39:15,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 15:39:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 304 transitions. [2020-10-13 15:39:15,144 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 304 transitions. Word has length 83 [2020-10-13 15:39:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:15,145 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 304 transitions. [2020-10-13 15:39:15,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 304 transitions. [2020-10-13 15:39:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 15:39:15,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:15,146 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:15,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:39:15,146 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:15,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:15,147 INFO L82 PathProgramCache]: Analyzing trace with hash 356540386, now seen corresponding path program 1 times [2020-10-13 15:39:15,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:15,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212930845] [2020-10-13 15:39:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:15,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:17,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:20,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:20,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 15:39:20,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:39:20,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:39:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:39:20,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:20,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:20,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:20,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:20,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:20,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:20,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:20,228 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 15:39:20,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212930845] [2020-10-13 15:39:20,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:20,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:20,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416833468] [2020-10-13 15:39:20,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:20,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:20,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:20,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:20,231 INFO L87 Difference]: Start difference. First operand 205 states and 304 transitions. Second operand 5 states. [2020-10-13 15:39:20,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:20,874 INFO L93 Difference]: Finished difference Result 392 states and 590 transitions. [2020-10-13 15:39:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:20,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-13 15:39:20,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:20,877 INFO L225 Difference]: With dead ends: 392 [2020-10-13 15:39:20,877 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 15:39:20,878 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 15:39:20,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 15:39:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2020-10-13 15:39:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 15:39:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 303 transitions. [2020-10-13 15:39:20,885 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 303 transitions. Word has length 84 [2020-10-13 15:39:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:20,886 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 303 transitions. [2020-10-13 15:39:20,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:20,886 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 303 transitions. [2020-10-13 15:39:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 15:39:20,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:20,887 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 15:39:20,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:39:20,888 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:20,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1194303364, now seen corresponding path program 1 times [2020-10-13 15:39:20,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:20,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576269] [2020-10-13 15:39:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:20,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:21,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 15:39:21,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:39:21,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-13 15:39:21,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:39:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:21,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:21,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:21,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:21,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:21,253 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 15:39:21,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576269] [2020-10-13 15:39:21,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:21,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:21,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480904233] [2020-10-13 15:39:21,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:21,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:21,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:21,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:21,255 INFO L87 Difference]: Start difference. First operand 205 states and 303 transitions. Second operand 5 states. [2020-10-13 15:39:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:22,362 INFO L93 Difference]: Finished difference Result 497 states and 752 transitions. [2020-10-13 15:39:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:22,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-13 15:39:22,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:22,365 INFO L225 Difference]: With dead ends: 497 [2020-10-13 15:39:22,365 INFO L226 Difference]: Without dead ends: 317 [2020-10-13 15:39:22,371 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 15:39:22,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-13 15:39:22,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 246. [2020-10-13 15:39:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-13 15:39:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 377 transitions. [2020-10-13 15:39:22,380 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 377 transitions. Word has length 88 [2020-10-13 15:39:22,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:22,381 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 377 transitions. [2020-10-13 15:39:22,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 377 transitions. [2020-10-13 15:39:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 15:39:22,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:22,382 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 15:39:22,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:39:22,383 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:22,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:22,383 INFO L82 PathProgramCache]: Analyzing trace with hash -770656642, now seen corresponding path program 1 times [2020-10-13 15:39:22,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:22,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076569919] [2020-10-13 15:39:22,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:22,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:22,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 15:39:22,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:22,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-13 15:39:22,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:39:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:22,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:22,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:22,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:22,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:22,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:22,890 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 15:39:22,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076569919] [2020-10-13 15:39:22,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:22,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:22,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942883470] [2020-10-13 15:39:22,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:22,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:22,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:22,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:22,894 INFO L87 Difference]: Start difference. First operand 246 states and 377 transitions. Second operand 5 states. [2020-10-13 15:39:23,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:23,859 INFO L93 Difference]: Finished difference Result 517 states and 802 transitions. [2020-10-13 15:39:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:23,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-13 15:39:23,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:23,862 INFO L225 Difference]: With dead ends: 517 [2020-10-13 15:39:23,862 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 15:39:23,864 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 15:39:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 15:39:23,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 270. [2020-10-13 15:39:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-13 15:39:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 419 transitions. [2020-10-13 15:39:23,873 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 419 transitions. Word has length 88 [2020-10-13 15:39:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:23,874 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 419 transitions. [2020-10-13 15:39:23,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:23,874 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 419 transitions. [2020-10-13 15:39:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 15:39:23,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:23,875 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:23,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:39:23,875 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:23,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:23,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1522083582, now seen corresponding path program 1 times [2020-10-13 15:39:23,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:23,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241534680] [2020-10-13 15:39:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:24,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:24,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 15:39:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:39:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-13 15:39:24,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:39:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:24,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:24,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:24,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:24,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:24,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:24,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:24,196 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 15:39:24,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241534680] [2020-10-13 15:39:24,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:24,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:24,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241293434] [2020-10-13 15:39:24,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:24,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:24,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:24,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:24,197 INFO L87 Difference]: Start difference. First operand 270 states and 419 transitions. Second operand 5 states. [2020-10-13 15:39:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:25,267 INFO L93 Difference]: Finished difference Result 578 states and 898 transitions. [2020-10-13 15:39:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:25,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-13 15:39:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:25,271 INFO L225 Difference]: With dead ends: 578 [2020-10-13 15:39:25,271 INFO L226 Difference]: Without dead ends: 333 [2020-10-13 15:39:25,272 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 15:39:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-13 15:39:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 271. [2020-10-13 15:39:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:39:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 420 transitions. [2020-10-13 15:39:25,280 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 420 transitions. Word has length 89 [2020-10-13 15:39:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:25,281 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 420 transitions. [2020-10-13 15:39:25,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 420 transitions. [2020-10-13 15:39:25,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:39:25,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:25,282 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:25,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:39:25,283 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:25,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:25,283 INFO L82 PathProgramCache]: Analyzing trace with hash -660347376, now seen corresponding path program 1 times [2020-10-13 15:39:25,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:25,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307817921] [2020-10-13 15:39:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:26,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:26,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:39:26,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:26,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1413 [2020-10-13 15:39:26,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:26,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:39:26,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:26,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:26,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:26,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:26,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:26,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:26,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:26,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:26,798 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 15:39:26,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307817921] [2020-10-13 15:39:26,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:26,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:26,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794860271] [2020-10-13 15:39:26,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:26,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:26,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:26,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:26,800 INFO L87 Difference]: Start difference. First operand 271 states and 420 transitions. Second operand 5 states. [2020-10-13 15:39:27,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:27,912 INFO L93 Difference]: Finished difference Result 579 states and 898 transitions. [2020-10-13 15:39:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:27,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:39:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:27,915 INFO L225 Difference]: With dead ends: 579 [2020-10-13 15:39:27,915 INFO L226 Difference]: Without dead ends: 333 [2020-10-13 15:39:27,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:27,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-13 15:39:27,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 271. [2020-10-13 15:39:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:39:27,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 419 transitions. [2020-10-13 15:39:27,925 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 419 transitions. Word has length 101 [2020-10-13 15:39:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:27,925 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 419 transitions. [2020-10-13 15:39:27,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:27,925 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 419 transitions. [2020-10-13 15:39:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 15:39:27,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:27,927 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:27,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:39:27,927 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:27,928 INFO L82 PathProgramCache]: Analyzing trace with hash 215671630, now seen corresponding path program 1 times [2020-10-13 15:39:27,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:27,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886521937] [2020-10-13 15:39:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:27,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:29,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 15:39:29,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-13 15:39:29,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:39:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:29,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:29,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:29,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:29,304 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 15:39:29,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886521937] [2020-10-13 15:39:29,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:29,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:29,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153425218] [2020-10-13 15:39:29,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:29,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:29,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:29,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:29,306 INFO L87 Difference]: Start difference. First operand 271 states and 419 transitions. Second operand 5 states. [2020-10-13 15:39:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:30,283 INFO L93 Difference]: Finished difference Result 543 states and 843 transitions. [2020-10-13 15:39:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:30,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 15:39:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:30,285 INFO L225 Difference]: With dead ends: 543 [2020-10-13 15:39:30,286 INFO L226 Difference]: Without dead ends: 297 [2020-10-13 15:39:30,287 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 15:39:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-13 15:39:30,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 271. [2020-10-13 15:39:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:39:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 418 transitions. [2020-10-13 15:39:30,300 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 418 transitions. Word has length 101 [2020-10-13 15:39:30,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:30,300 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 418 transitions. [2020-10-13 15:39:30,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 418 transitions. [2020-10-13 15:39:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:39:30,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:30,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:30,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:39:30,302 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:30,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:30,304 INFO L82 PathProgramCache]: Analyzing trace with hash -667014811, now seen corresponding path program 1 times [2020-10-13 15:39:30,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:30,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689951903] [2020-10-13 15:39:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:30,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:30,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:30,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:31,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:39:31,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1586 [2020-10-13 15:39:31,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:39:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:31,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:31,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:31,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:31,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:31,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:31,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:31,991 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 15:39:31,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689951903] [2020-10-13 15:39:31,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:31,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:31,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737345501] [2020-10-13 15:39:31,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:31,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:31,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:31,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:31,993 INFO L87 Difference]: Start difference. First operand 271 states and 418 transitions. Second operand 5 states. [2020-10-13 15:39:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:33,057 INFO L93 Difference]: Finished difference Result 577 states and 892 transitions. [2020-10-13 15:39:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:33,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:39:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:33,061 INFO L225 Difference]: With dead ends: 577 [2020-10-13 15:39:33,061 INFO L226 Difference]: Without dead ends: 331 [2020-10-13 15:39:33,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:33,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-13 15:39:33,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 271. [2020-10-13 15:39:33,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:39:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 417 transitions. [2020-10-13 15:39:33,071 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 417 transitions. Word has length 102 [2020-10-13 15:39:33,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:33,072 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 417 transitions. [2020-10-13 15:39:33,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:33,072 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 417 transitions. [2020-10-13 15:39:33,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:39:33,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:33,073 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:33,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:39:33,074 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:33,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:33,074 INFO L82 PathProgramCache]: Analyzing trace with hash -599454810, now seen corresponding path program 1 times [2020-10-13 15:39:33,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:33,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099250175] [2020-10-13 15:39:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:33,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:33,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:39:33,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-13 15:39:33,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:33,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:33,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:33,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:39:33,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:33,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:33,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:33,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:33,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:33,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:33,723 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 15:39:33,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099250175] [2020-10-13 15:39:33,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:33,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:33,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824019702] [2020-10-13 15:39:33,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:33,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:33,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:33,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:33,725 INFO L87 Difference]: Start difference. First operand 271 states and 417 transitions. Second operand 5 states. [2020-10-13 15:39:34,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:34,865 INFO L93 Difference]: Finished difference Result 576 states and 889 transitions. [2020-10-13 15:39:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:34,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:39:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:34,868 INFO L225 Difference]: With dead ends: 576 [2020-10-13 15:39:34,868 INFO L226 Difference]: Without dead ends: 330 [2020-10-13 15:39:34,869 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 15:39:34,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-13 15:39:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 271. [2020-10-13 15:39:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:39:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 416 transitions. [2020-10-13 15:39:34,877 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 416 transitions. Word has length 102 [2020-10-13 15:39:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:34,877 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 416 transitions. [2020-10-13 15:39:34,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 416 transitions. [2020-10-13 15:39:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:39:34,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:34,879 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:34,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:39:34,879 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:34,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:34,880 INFO L82 PathProgramCache]: Analyzing trace with hash 719770599, now seen corresponding path program 1 times [2020-10-13 15:39:34,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:34,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934483107] [2020-10-13 15:39:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:34,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:35,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:36,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:36,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:39:36,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1527 [2020-10-13 15:39:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:39:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:36,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:36,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:36,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:36,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:36,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:36,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:36,506 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 15:39:36,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934483107] [2020-10-13 15:39:36,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:36,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:36,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183210800] [2020-10-13 15:39:36,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:36,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:36,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:36,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:36,507 INFO L87 Difference]: Start difference. First operand 271 states and 416 transitions. Second operand 5 states. [2020-10-13 15:39:37,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:37,497 INFO L93 Difference]: Finished difference Result 541 states and 835 transitions. [2020-10-13 15:39:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:37,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:39:37,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:37,500 INFO L225 Difference]: With dead ends: 541 [2020-10-13 15:39:37,500 INFO L226 Difference]: Without dead ends: 295 [2020-10-13 15:39:37,501 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 15:39:37,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-13 15:39:37,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 271. [2020-10-13 15:39:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:39:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 415 transitions. [2020-10-13 15:39:37,510 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 415 transitions. Word has length 102 [2020-10-13 15:39:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:37,511 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 415 transitions. [2020-10-13 15:39:37,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 415 transitions. [2020-10-13 15:39:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:39:37,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:37,512 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:37,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:39:37,513 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash 787330600, now seen corresponding path program 1 times [2020-10-13 15:39:37,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:37,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047646652] [2020-10-13 15:39:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:37,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:37,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:38,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:39:38,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:38,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-13 15:39:38,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:39:38,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:38,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:38,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:38,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:38,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:38,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:38,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:38,178 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 15:39:38,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047646652] [2020-10-13 15:39:38,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:38,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:38,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611540124] [2020-10-13 15:39:38,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:38,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:38,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:38,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:38,180 INFO L87 Difference]: Start difference. First operand 271 states and 415 transitions. Second operand 5 states. [2020-10-13 15:39:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:39,118 INFO L93 Difference]: Finished difference Result 540 states and 832 transitions. [2020-10-13 15:39:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:39,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:39:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:39,121 INFO L225 Difference]: With dead ends: 540 [2020-10-13 15:39:39,122 INFO L226 Difference]: Without dead ends: 294 [2020-10-13 15:39:39,123 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 15:39:39,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-13 15:39:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 271. [2020-10-13 15:39:39,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:39:39,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 414 transitions. [2020-10-13 15:39:39,131 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 414 transitions. Word has length 102 [2020-10-13 15:39:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:39,131 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 414 transitions. [2020-10-13 15:39:39,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 414 transitions. [2020-10-13 15:39:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:39:39,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:39,133 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:39,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:39:39,133 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:39,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:39,133 INFO L82 PathProgramCache]: Analyzing trace with hash -720262753, now seen corresponding path program 1 times [2020-10-13 15:39:39,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:39,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974527556] [2020-10-13 15:39:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:40,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:44,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:44,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:39:44,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:39:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:39:44,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:39:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:44,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:44,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:44,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:44,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:44,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:44,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:44,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:44,244 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 15:39:44,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974527556] [2020-10-13 15:39:44,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:44,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:44,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852293437] [2020-10-13 15:39:44,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:44,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:44,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:44,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:44,246 INFO L87 Difference]: Start difference. First operand 271 states and 414 transitions. Second operand 5 states. [2020-10-13 15:39:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:45,347 INFO L93 Difference]: Finished difference Result 575 states and 882 transitions. [2020-10-13 15:39:45,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:45,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:39:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:45,351 INFO L225 Difference]: With dead ends: 575 [2020-10-13 15:39:45,351 INFO L226 Difference]: Without dead ends: 329 [2020-10-13 15:39:45,352 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 15:39:45,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-13 15:39:45,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 271. [2020-10-13 15:39:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:39:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 413 transitions. [2020-10-13 15:39:45,361 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 413 transitions. Word has length 103 [2020-10-13 15:39:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:45,361 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 413 transitions. [2020-10-13 15:39:45,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:45,361 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 413 transitions. [2020-10-13 15:39:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:39:45,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:45,363 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:45,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:39:45,363 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:45,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1939169163, now seen corresponding path program 1 times [2020-10-13 15:39:45,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:45,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335850933] [2020-10-13 15:39:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:45,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:45,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:45,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:47,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:47,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:50,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:39:50,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:50,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:39:50,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:50,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:50,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:50,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:50,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:50,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:50,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:50,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:50,474 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 15:39:50,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335850933] [2020-10-13 15:39:50,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:50,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:50,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602684794] [2020-10-13 15:39:50,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:50,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:50,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:50,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:50,475 INFO L87 Difference]: Start difference. First operand 271 states and 413 transitions. Second operand 5 states. [2020-10-13 15:39:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:51,593 INFO L93 Difference]: Finished difference Result 575 states and 880 transitions. [2020-10-13 15:39:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:51,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:39:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:51,597 INFO L225 Difference]: With dead ends: 575 [2020-10-13 15:39:51,597 INFO L226 Difference]: Without dead ends: 329 [2020-10-13 15:39:51,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-13 15:39:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 271. [2020-10-13 15:39:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:39:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 412 transitions. [2020-10-13 15:39:51,606 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 412 transitions. Word has length 103 [2020-10-13 15:39:51,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:51,607 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 412 transitions. [2020-10-13 15:39:51,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:51,607 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 412 transitions. [2020-10-13 15:39:51,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:39:51,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:51,609 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:51,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:39:51,609 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:51,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:51,609 INFO L82 PathProgramCache]: Analyzing trace with hash -679588003, now seen corresponding path program 1 times [2020-10-13 15:39:51,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:51,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193476597] [2020-10-13 15:39:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:56,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:56,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:39:56,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:39:56,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:39:56,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:56,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:39:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:56,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:56,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:56,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:56,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:56,708 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 15:39:56,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193476597] [2020-10-13 15:39:56,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:56,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:56,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993509069] [2020-10-13 15:39:56,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:56,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:56,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:56,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:56,710 INFO L87 Difference]: Start difference. First operand 271 states and 412 transitions. Second operand 5 states. [2020-10-13 15:39:57,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:57,661 INFO L93 Difference]: Finished difference Result 539 states and 825 transitions. [2020-10-13 15:39:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:57,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:39:57,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:57,663 INFO L225 Difference]: With dead ends: 539 [2020-10-13 15:39:57,663 INFO L226 Difference]: Without dead ends: 293 [2020-10-13 15:39:57,665 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 15:39:57,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-13 15:39:57,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 271. [2020-10-13 15:39:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:39:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 411 transitions. [2020-10-13 15:39:57,671 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 411 transitions. Word has length 103 [2020-10-13 15:39:57,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:57,671 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 411 transitions. [2020-10-13 15:39:57,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:57,671 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 411 transitions. [2020-10-13 15:39:57,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:39:57,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:57,673 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:57,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:39:57,673 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:57,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:57,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1979843913, now seen corresponding path program 1 times [2020-10-13 15:39:57,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:57,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469176126] [2020-10-13 15:39:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:57,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:57,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:02,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:02,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:40:02,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:40:02,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:40:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:02,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:02,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:02,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:02,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:02,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:40:02,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:02,772 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 15:40:02,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469176126] [2020-10-13 15:40:02,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:02,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:02,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106629868] [2020-10-13 15:40:02,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:02,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:02,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:02,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:02,774 INFO L87 Difference]: Start difference. First operand 271 states and 411 transitions. Second operand 5 states. [2020-10-13 15:40:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:03,701 INFO L93 Difference]: Finished difference Result 539 states and 823 transitions. [2020-10-13 15:40:03,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:03,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:40:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:03,705 INFO L225 Difference]: With dead ends: 539 [2020-10-13 15:40:03,705 INFO L226 Difference]: Without dead ends: 293 [2020-10-13 15:40:03,706 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 15:40:03,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-13 15:40:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 271. [2020-10-13 15:40:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:40:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 410 transitions. [2020-10-13 15:40:03,714 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 410 transitions. Word has length 103 [2020-10-13 15:40:03,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:03,714 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 410 transitions. [2020-10-13 15:40:03,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:03,715 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 410 transitions. [2020-10-13 15:40:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:40:03,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:03,716 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:03,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:40:03,716 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:03,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:03,717 INFO L82 PathProgramCache]: Analyzing trace with hash 926008032, now seen corresponding path program 1 times [2020-10-13 15:40:03,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:03,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509613321] [2020-10-13 15:40:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:08,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:08,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:08,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:40:08,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:40:08,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:40:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:08,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:08,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:08,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:08,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:08,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:40:08,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:08,848 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 15:40:08,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509613321] [2020-10-13 15:40:08,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:08,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:08,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289325273] [2020-10-13 15:40:08,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:08,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:08,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:08,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:08,851 INFO L87 Difference]: Start difference. First operand 271 states and 410 transitions. Second operand 5 states. [2020-10-13 15:40:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:09,939 INFO L93 Difference]: Finished difference Result 575 states and 874 transitions. [2020-10-13 15:40:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:09,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:40:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:09,942 INFO L225 Difference]: With dead ends: 575 [2020-10-13 15:40:09,942 INFO L226 Difference]: Without dead ends: 329 [2020-10-13 15:40:09,944 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 15:40:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-13 15:40:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 271. [2020-10-13 15:40:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:40:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 409 transitions. [2020-10-13 15:40:09,952 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 409 transitions. Word has length 104 [2020-10-13 15:40:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:09,952 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 409 transitions. [2020-10-13 15:40:09,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:09,952 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 409 transitions. [2020-10-13 15:40:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:40:09,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:09,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:09,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:40:09,954 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:09,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:09,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2108042014, now seen corresponding path program 1 times [2020-10-13 15:40:09,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:09,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817712657] [2020-10-13 15:40:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:10,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:10,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:14,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:14,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:14,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:40:14,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:40:14,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:40:14,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:15,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:15,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:15,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:15,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:15,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:15,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:15,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:15,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:15,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:15,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:15,058 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 15:40:15,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817712657] [2020-10-13 15:40:15,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:15,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:15,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869477589] [2020-10-13 15:40:15,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:15,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:15,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:15,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:15,059 INFO L87 Difference]: Start difference. First operand 271 states and 409 transitions. Second operand 5 states. [2020-10-13 15:40:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:16,078 INFO L93 Difference]: Finished difference Result 539 states and 819 transitions. [2020-10-13 15:40:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:16,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:40:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:16,082 INFO L225 Difference]: With dead ends: 539 [2020-10-13 15:40:16,082 INFO L226 Difference]: Without dead ends: 293 [2020-10-13 15:40:16,083 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 15:40:16,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-13 15:40:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 271. [2020-10-13 15:40:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:40:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 408 transitions. [2020-10-13 15:40:16,091 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 408 transitions. Word has length 104 [2020-10-13 15:40:16,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:16,091 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 408 transitions. [2020-10-13 15:40:16,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:16,092 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 408 transitions. [2020-10-13 15:40:16,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:40:16,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:16,093 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:16,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:40:16,093 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:16,094 INFO L82 PathProgramCache]: Analyzing trace with hash 135721862, now seen corresponding path program 1 times [2020-10-13 15:40:16,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:16,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468722289] [2020-10-13 15:40:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:16,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:16,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:21,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:21,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:40:21,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:21,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 15:40:21,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:21,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:40:21,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:40:21,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:21,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:21,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:21,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:21,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:21,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:21,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:21,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:21,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:21,287 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 15:40:21,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468722289] [2020-10-13 15:40:21,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:21,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:21,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584177989] [2020-10-13 15:40:21,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:21,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:21,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:21,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:21,294 INFO L87 Difference]: Start difference. First operand 271 states and 408 transitions. Second operand 5 states. [2020-10-13 15:40:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:22,553 INFO L93 Difference]: Finished difference Result 575 states and 870 transitions. [2020-10-13 15:40:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:22,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:40:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:22,557 INFO L225 Difference]: With dead ends: 575 [2020-10-13 15:40:22,557 INFO L226 Difference]: Without dead ends: 329 [2020-10-13 15:40:22,557 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 15:40:22,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-13 15:40:22,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 271. [2020-10-13 15:40:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:40:22,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 407 transitions. [2020-10-13 15:40:22,565 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 407 transitions. Word has length 105 [2020-10-13 15:40:22,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:22,565 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 407 transitions. [2020-10-13 15:40:22,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:22,566 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 407 transitions. [2020-10-13 15:40:22,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:40:22,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:22,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:22,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:40:22,567 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:22,568 INFO L82 PathProgramCache]: Analyzing trace with hash 569450948, now seen corresponding path program 1 times [2020-10-13 15:40:22,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:22,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178104398] [2020-10-13 15:40:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:22,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:22,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:22,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:27,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:27,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:40:27,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:40:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:40:27,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:40:27,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:27,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:27,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:27,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:27,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:40:27,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:27,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:27,681 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 15:40:27,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178104398] [2020-10-13 15:40:27,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:27,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:27,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995928705] [2020-10-13 15:40:27,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:27,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:27,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:27,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:27,683 INFO L87 Difference]: Start difference. First operand 271 states and 407 transitions. Second operand 5 states. [2020-10-13 15:40:28,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:28,656 INFO L93 Difference]: Finished difference Result 539 states and 815 transitions. [2020-10-13 15:40:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:28,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:40:28,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:28,659 INFO L225 Difference]: With dead ends: 539 [2020-10-13 15:40:28,659 INFO L226 Difference]: Without dead ends: 293 [2020-10-13 15:40:28,660 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 15:40:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-13 15:40:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 271. [2020-10-13 15:40:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:40:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 406 transitions. [2020-10-13 15:40:28,668 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 406 transitions. Word has length 105 [2020-10-13 15:40:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:28,668 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 406 transitions. [2020-10-13 15:40:28,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 406 transitions. [2020-10-13 15:40:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:40:28,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:28,670 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:28,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:40:28,670 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1959592187, now seen corresponding path program 1 times [2020-10-13 15:40:28,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:28,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160800216] [2020-10-13 15:40:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:28,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:33,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:33,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:33,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:40:33,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:40:33,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:40:33,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:33,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:33,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:33,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:33,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:40:33,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:33,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:33,779 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 15:40:33,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160800216] [2020-10-13 15:40:33,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:33,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:33,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805401536] [2020-10-13 15:40:33,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:33,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:33,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:33,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:33,781 INFO L87 Difference]: Start difference. First operand 271 states and 406 transitions. Second operand 5 states. [2020-10-13 15:40:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:34,915 INFO L93 Difference]: Finished difference Result 565 states and 854 transitions. [2020-10-13 15:40:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:34,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:40:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:34,918 INFO L225 Difference]: With dead ends: 565 [2020-10-13 15:40:34,918 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 15:40:34,919 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 15:40:34,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 15:40:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 271. [2020-10-13 15:40:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:40:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 405 transitions. [2020-10-13 15:40:34,927 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 405 transitions. Word has length 106 [2020-10-13 15:40:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:34,928 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 405 transitions. [2020-10-13 15:40:34,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 405 transitions. [2020-10-13 15:40:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:40:34,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:34,929 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:34,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:40:34,930 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:34,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1774675331, now seen corresponding path program 1 times [2020-10-13 15:40:34,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:34,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909513053] [2020-10-13 15:40:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:35,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:39,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:39,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:39,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:40:39,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:40:39,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:40:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:40,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:40,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:40,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:40,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:40,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:40,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:40,034 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 15:40:40,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909513053] [2020-10-13 15:40:40,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:40,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:40,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141794341] [2020-10-13 15:40:40,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:40,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:40,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:40,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:40,036 INFO L87 Difference]: Start difference. First operand 271 states and 405 transitions. Second operand 5 states. [2020-10-13 15:40:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:40,972 INFO L93 Difference]: Finished difference Result 529 states and 799 transitions. [2020-10-13 15:40:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:40,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:40:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:40,975 INFO L225 Difference]: With dead ends: 529 [2020-10-13 15:40:40,975 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:40:40,976 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 15:40:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:40:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 271. [2020-10-13 15:40:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:40:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 404 transitions. [2020-10-13 15:40:40,984 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 404 transitions. Word has length 106 [2020-10-13 15:40:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:40,985 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 404 transitions. [2020-10-13 15:40:40,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:40,985 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 404 transitions. [2020-10-13 15:40:40,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 15:40:40,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:40,986 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:40,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:40:40,987 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:40,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:40,987 INFO L82 PathProgramCache]: Analyzing trace with hash -139076125, now seen corresponding path program 1 times [2020-10-13 15:40:40,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:40,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196886953] [2020-10-13 15:40:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:41,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:41,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:42,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:42,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 15:40:42,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:42,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-13 15:40:42,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:40:42,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:42,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:42,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:42,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:42,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:42,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:42,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:42,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:42,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:42,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:42,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:42,402 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 15:40:42,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196886953] [2020-10-13 15:40:42,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:42,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:42,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806351122] [2020-10-13 15:40:42,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:42,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:42,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:42,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:42,404 INFO L87 Difference]: Start difference. First operand 271 states and 404 transitions. Second operand 5 states. [2020-10-13 15:40:43,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:43,589 INFO L93 Difference]: Finished difference Result 565 states and 850 transitions. [2020-10-13 15:40:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:43,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 15:40:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:43,592 INFO L225 Difference]: With dead ends: 565 [2020-10-13 15:40:43,592 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 15:40:43,593 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 15:40:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 15:40:43,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 271. [2020-10-13 15:40:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 15:40:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 403 transitions. [2020-10-13 15:40:43,600 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 403 transitions. Word has length 110 [2020-10-13 15:40:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:43,601 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 403 transitions. [2020-10-13 15:40:43,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 403 transitions. [2020-10-13 15:40:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 15:40:43,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:43,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:43,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:40:43,603 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:43,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:43,603 INFO L82 PathProgramCache]: Analyzing trace with hash -556472731, now seen corresponding path program 1 times [2020-10-13 15:40:43,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:43,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033116197] [2020-10-13 15:40:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:44,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:44,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 15:40:44,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:44,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-13 15:40:44,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:40:44,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:40:44,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:44,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:44,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:44,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:44,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:44,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:44,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:44,088 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 15:40:44,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033116197] [2020-10-13 15:40:44,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:44,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:44,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426859069] [2020-10-13 15:40:44,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:44,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:44,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:44,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:44,090 INFO L87 Difference]: Start difference. First operand 271 states and 403 transitions. Second operand 5 states. [2020-10-13 15:40:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:44,948 INFO L93 Difference]: Finished difference Result 571 states and 861 transitions. [2020-10-13 15:40:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:44,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 15:40:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:44,951 INFO L225 Difference]: With dead ends: 571 [2020-10-13 15:40:44,951 INFO L226 Difference]: Without dead ends: 325 [2020-10-13 15:40:44,952 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 15:40:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-13 15:40:44,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 297. [2020-10-13 15:40:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-13 15:40:44,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 449 transitions. [2020-10-13 15:40:44,959 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 449 transitions. Word has length 110 [2020-10-13 15:40:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:44,960 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 449 transitions. [2020-10-13 15:40:44,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 449 transitions. [2020-10-13 15:40:44,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:40:44,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:44,961 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] [2020-10-13 15:40:44,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:40:44,962 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:44,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:44,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1123413037, now seen corresponding path program 1 times [2020-10-13 15:40:44,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:44,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295712548] [2020-10-13 15:40:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:44,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:46,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:46,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:40:46,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1332 [2020-10-13 15:40:46,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:46,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:40:46,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:46,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:46,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:46,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:46,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:46,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:46,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:46,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:46,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:46,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:46,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:46,397 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 15:40:46,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295712548] [2020-10-13 15:40:46,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:46,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:46,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310562566] [2020-10-13 15:40:46,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:46,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:46,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:46,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:46,399 INFO L87 Difference]: Start difference. First operand 297 states and 449 transitions. Second operand 5 states. [2020-10-13 15:40:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:47,547 INFO L93 Difference]: Finished difference Result 617 states and 940 transitions. [2020-10-13 15:40:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:47,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:40:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:47,550 INFO L225 Difference]: With dead ends: 617 [2020-10-13 15:40:47,550 INFO L226 Difference]: Without dead ends: 345 [2020-10-13 15:40:47,551 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 15:40:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-13 15:40:47,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 297. [2020-10-13 15:40:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-13 15:40:47,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 448 transitions. [2020-10-13 15:40:47,559 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 448 transitions. Word has length 113 [2020-10-13 15:40:47,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:47,559 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 448 transitions. [2020-10-13 15:40:47,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 448 transitions. [2020-10-13 15:40:47,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:40:47,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:47,561 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] [2020-10-13 15:40:47,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:40:47,561 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:47,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:47,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1435362370, now seen corresponding path program 1 times [2020-10-13 15:40:47,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:47,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20430954] [2020-10-13 15:40:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:48,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:49,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:49,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:40:49,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1451 [2020-10-13 15:40:49,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 15:40:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:40:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:49,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:49,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:49,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:49,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:49,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:49,107 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 15:40:49,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20430954] [2020-10-13 15:40:49,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:49,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:49,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493588857] [2020-10-13 15:40:49,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:49,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:49,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:49,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:49,108 INFO L87 Difference]: Start difference. First operand 297 states and 448 transitions. Second operand 5 states. [2020-10-13 15:40:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:50,154 INFO L93 Difference]: Finished difference Result 637 states and 974 transitions. [2020-10-13 15:40:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:50,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:40:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:50,157 INFO L225 Difference]: With dead ends: 637 [2020-10-13 15:40:50,157 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:40:50,157 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 15:40:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:40:50,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 327. [2020-10-13 15:40:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-13 15:40:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 502 transitions. [2020-10-13 15:40:50,165 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 502 transitions. Word has length 114 [2020-10-13 15:40:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:50,166 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 502 transitions. [2020-10-13 15:40:50,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:50,166 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 502 transitions. [2020-10-13 15:40:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:40:50,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:50,167 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:50,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:40:50,168 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:50,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:50,168 INFO L82 PathProgramCache]: Analyzing trace with hash 738594445, now seen corresponding path program 1 times [2020-10-13 15:40:50,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:50,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825976458] [2020-10-13 15:40:50,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:50,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:50,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:51,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:51,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:40:51,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:51,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1046 [2020-10-13 15:40:51,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:40:51,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:51,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:51,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:51,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:51,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:51,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:51,323 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 15:40:51,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825976458] [2020-10-13 15:40:51,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:51,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:51,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443908254] [2020-10-13 15:40:51,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:51,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:51,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:51,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:51,325 INFO L87 Difference]: Start difference. First operand 327 states and 502 transitions. Second operand 5 states. [2020-10-13 15:40:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:52,457 INFO L93 Difference]: Finished difference Result 677 states and 1046 transitions. [2020-10-13 15:40:52,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:52,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:40:52,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:52,461 INFO L225 Difference]: With dead ends: 677 [2020-10-13 15:40:52,461 INFO L226 Difference]: Without dead ends: 375 [2020-10-13 15:40:52,462 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 15:40:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-13 15:40:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 327. [2020-10-13 15:40:52,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-13 15:40:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 501 transitions. [2020-10-13 15:40:52,470 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 501 transitions. Word has length 115 [2020-10-13 15:40:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:52,470 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 501 transitions. [2020-10-13 15:40:52,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 501 transitions. [2020-10-13 15:40:52,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:40:52,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:52,472 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:52,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:40:52,472 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1072202184, now seen corresponding path program 1 times [2020-10-13 15:40:52,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:52,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632490918] [2020-10-13 15:40:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:52,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:57,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:57,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:40:57,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:40:57,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:40:57,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:57,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:57,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:57,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:40:57,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:57,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:57,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:57,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:57,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:57,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:57,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:57,589 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 15:40:57,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632490918] [2020-10-13 15:40:57,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:57,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:57,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203414903] [2020-10-13 15:40:57,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:57,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:57,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:57,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:57,591 INFO L87 Difference]: Start difference. First operand 327 states and 501 transitions. Second operand 5 states. [2020-10-13 15:40:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:58,772 INFO L93 Difference]: Finished difference Result 677 states and 1044 transitions. [2020-10-13 15:40:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:58,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:40:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:58,775 INFO L225 Difference]: With dead ends: 677 [2020-10-13 15:40:58,775 INFO L226 Difference]: Without dead ends: 375 [2020-10-13 15:40:58,776 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 15:40:58,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-13 15:40:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 327. [2020-10-13 15:40:58,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-13 15:40:58,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 500 transitions. [2020-10-13 15:40:58,784 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 500 transitions. Word has length 116 [2020-10-13 15:40:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:58,784 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 500 transitions. [2020-10-13 15:40:58,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 500 transitions. [2020-10-13 15:40:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:40:58,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:58,785 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:40:58,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:40:58,786 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:58,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:58,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1748924222, now seen corresponding path program 1 times [2020-10-13 15:40:58,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:58,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007340264] [2020-10-13 15:40:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:58,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:59,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:59,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:59,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:40:59,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-13 15:40:59,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:40:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:59,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:59,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:59,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:59,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:59,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:00,011 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 15:41:00,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007340264] [2020-10-13 15:41:00,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:00,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:00,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445314047] [2020-10-13 15:41:00,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:00,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:00,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:00,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:00,014 INFO L87 Difference]: Start difference. First operand 327 states and 500 transitions. Second operand 5 states. [2020-10-13 15:41:01,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:01,213 INFO L93 Difference]: Finished difference Result 675 states and 1040 transitions. [2020-10-13 15:41:01,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:01,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:41:01,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:01,217 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:41:01,217 INFO L226 Difference]: Without dead ends: 373 [2020-10-13 15:41:01,218 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 15:41:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-13 15:41:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 327. [2020-10-13 15:41:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-13 15:41:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 499 transitions. [2020-10-13 15:41:01,225 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 499 transitions. Word has length 116 [2020-10-13 15:41:01,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:01,225 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 499 transitions. [2020-10-13 15:41:01,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 499 transitions. [2020-10-13 15:41:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:41:01,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:01,227 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:01,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:41:01,227 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:01,227 INFO L82 PathProgramCache]: Analyzing trace with hash -563314333, now seen corresponding path program 1 times [2020-10-13 15:41:01,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:01,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033135104] [2020-10-13 15:41:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:01,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:05,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:06,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:06,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:41:06,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:41:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:41:06,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:41:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:41:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:06,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:06,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:06,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:06,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:06,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:41:06,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033135104] [2020-10-13 15:41:06,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:06,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:06,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700775994] [2020-10-13 15:41:06,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:06,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:06,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:06,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:06,334 INFO L87 Difference]: Start difference. First operand 327 states and 499 transitions. Second operand 5 states. [2020-10-13 15:41:07,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:07,298 INFO L93 Difference]: Finished difference Result 693 states and 1070 transitions. [2020-10-13 15:41:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:07,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:41:07,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:07,301 INFO L225 Difference]: With dead ends: 693 [2020-10-13 15:41:07,301 INFO L226 Difference]: Without dead ends: 391 [2020-10-13 15:41:07,301 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 15:41:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-13 15:41:07,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 355. [2020-10-13 15:41:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-13 15:41:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 549 transitions. [2020-10-13 15:41:07,307 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 549 transitions. Word has length 117 [2020-10-13 15:41:07,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:07,308 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 549 transitions. [2020-10-13 15:41:07,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 549 transitions. [2020-10-13 15:41:07,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:41:07,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:07,309 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:07,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:41:07,310 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:07,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:07,310 INFO L82 PathProgramCache]: Analyzing trace with hash -17348053, now seen corresponding path program 1 times [2020-10-13 15:41:07,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:07,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588268858] [2020-10-13 15:41:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:07,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:07,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:41:07,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:41:07,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-13 15:41:07,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:07,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:41:07,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:07,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:07,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:07,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:07,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:07,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:07,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:07,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:07,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:41:07,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588268858] [2020-10-13 15:41:07,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:07,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:07,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523008514] [2020-10-13 15:41:07,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:07,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:07,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:07,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:07,740 INFO L87 Difference]: Start difference. First operand 355 states and 549 transitions. Second operand 5 states. [2020-10-13 15:41:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:08,889 INFO L93 Difference]: Finished difference Result 728 states and 1134 transitions. [2020-10-13 15:41:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:08,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:41:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:08,892 INFO L225 Difference]: With dead ends: 728 [2020-10-13 15:41:08,893 INFO L226 Difference]: Without dead ends: 398 [2020-10-13 15:41:08,893 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 15:41:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-13 15:41:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 355. [2020-10-13 15:41:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-13 15:41:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 548 transitions. [2020-10-13 15:41:08,901 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 548 transitions. Word has length 117 [2020-10-13 15:41:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:08,902 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 548 transitions. [2020-10-13 15:41:08,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 548 transitions. [2020-10-13 15:41:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:41:08,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:08,904 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:08,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:41:08,904 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:08,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1551670531, now seen corresponding path program 1 times [2020-10-13 15:41:08,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:08,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13644229] [2020-10-13 15:41:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:10,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:12,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:12,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:41:12,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:12,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3947 [2020-10-13 15:41:12,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:41:12,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:12,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:12,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:12,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:12,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:12,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:41:12,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13644229] [2020-10-13 15:41:12,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:12,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:12,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290275833] [2020-10-13 15:41:12,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:12,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:12,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:12,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:12,971 INFO L87 Difference]: Start difference. First operand 355 states and 548 transitions. Second operand 5 states. [2020-10-13 15:41:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:14,079 INFO L93 Difference]: Finished difference Result 720 states and 1119 transitions. [2020-10-13 15:41:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:14,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:41:14,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:14,082 INFO L225 Difference]: With dead ends: 720 [2020-10-13 15:41:14,082 INFO L226 Difference]: Without dead ends: 390 [2020-10-13 15:41:14,083 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 15:41:14,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-13 15:41:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 355. [2020-10-13 15:41:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-13 15:41:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 547 transitions. [2020-10-13 15:41:14,097 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 547 transitions. Word has length 120 [2020-10-13 15:41:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:14,098 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 547 transitions. [2020-10-13 15:41:14,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 547 transitions. [2020-10-13 15:41:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:41:14,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:14,099 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:14,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:41:14,100 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:14,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1728759716, now seen corresponding path program 1 times [2020-10-13 15:41:14,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:14,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850471624] [2020-10-13 15:41:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:14,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:14,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:14,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:14,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:15,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:15,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:41:15,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:41:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-13 15:41:15,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:41:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:41:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:15,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:15,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:15,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:15,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:41:15,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:41:15,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850471624] [2020-10-13 15:41:15,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:15,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:15,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663819107] [2020-10-13 15:41:15,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:15,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:15,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:15,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:15,635 INFO L87 Difference]: Start difference. First operand 355 states and 547 transitions. Second operand 5 states. [2020-10-13 15:41:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:16,495 INFO L93 Difference]: Finished difference Result 723 states and 1123 transitions. [2020-10-13 15:41:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:16,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:41:16,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:16,499 INFO L225 Difference]: With dead ends: 723 [2020-10-13 15:41:16,499 INFO L226 Difference]: Without dead ends: 393 [2020-10-13 15:41:16,500 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 15:41:16,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-13 15:41:16,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 376. [2020-10-13 15:41:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-13 15:41:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 583 transitions. [2020-10-13 15:41:16,509 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 583 transitions. Word has length 120 [2020-10-13 15:41:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:16,509 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 583 transitions. [2020-10-13 15:41:16,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 583 transitions. [2020-10-13 15:41:16,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:41:16,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:16,511 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:16,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:41:16,511 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:16,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:16,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1089411069, now seen corresponding path program 1 times [2020-10-13 15:41:16,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:16,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399743843] [2020-10-13 15:41:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:16,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:17,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:17,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:41:17,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:41:17,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-10-13 15:41:17,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:41:17,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:17,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:17,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:17,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:17,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:17,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:17,779 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 15:41:17,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399743843] [2020-10-13 15:41:17,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:17,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:17,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394069400] [2020-10-13 15:41:17,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:17,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:17,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:17,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:17,781 INFO L87 Difference]: Start difference. First operand 376 states and 583 transitions. Second operand 5 states. [2020-10-13 15:41:18,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:18,875 INFO L93 Difference]: Finished difference Result 762 states and 1189 transitions. [2020-10-13 15:41:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:18,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:41:18,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:18,879 INFO L225 Difference]: With dead ends: 762 [2020-10-13 15:41:18,879 INFO L226 Difference]: Without dead ends: 411 [2020-10-13 15:41:18,880 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 15:41:18,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-13 15:41:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 376. [2020-10-13 15:41:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-13 15:41:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 582 transitions. [2020-10-13 15:41:18,889 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 582 transitions. Word has length 121 [2020-10-13 15:41:18,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:18,889 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 582 transitions. [2020-10-13 15:41:18,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 582 transitions. [2020-10-13 15:41:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:41:18,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:18,891 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:18,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:41:18,891 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:18,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:18,892 INFO L82 PathProgramCache]: Analyzing trace with hash 761685042, now seen corresponding path program 1 times [2020-10-13 15:41:18,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:18,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275546216] [2020-10-13 15:41:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:20,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:20,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:41:20,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:41:20,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1820 [2020-10-13 15:41:20,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:20,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:20,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:20,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:41:20,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:20,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:20,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:20,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:20,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:20,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:20,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:20,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:20,823 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 15:41:20,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275546216] [2020-10-13 15:41:20,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:20,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:20,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319337990] [2020-10-13 15:41:20,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:20,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:20,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:20,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:20,825 INFO L87 Difference]: Start difference. First operand 376 states and 582 transitions. Second operand 5 states. [2020-10-13 15:41:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:21,912 INFO L93 Difference]: Finished difference Result 762 states and 1187 transitions. [2020-10-13 15:41:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:21,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:41:21,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:21,915 INFO L225 Difference]: With dead ends: 762 [2020-10-13 15:41:21,915 INFO L226 Difference]: Without dead ends: 411 [2020-10-13 15:41:21,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:41:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-13 15:41:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 376. [2020-10-13 15:41:21,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-13 15:41:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 581 transitions. [2020-10-13 15:41:21,923 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 581 transitions. Word has length 122 [2020-10-13 15:41:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:21,923 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 581 transitions. [2020-10-13 15:41:21,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 581 transitions. [2020-10-13 15:41:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:41:21,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:21,925 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:21,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:41:21,925 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:21,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1726816521, now seen corresponding path program 1 times [2020-10-13 15:41:21,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:21,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582841543] [2020-10-13 15:41:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:22,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:22,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:41:22,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:41:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-10-13 15:41:22,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:41:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:41:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:22,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:22,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:22,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:22,996 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 15:41:22,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582841543] [2020-10-13 15:41:22,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:22,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:22,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180601618] [2020-10-13 15:41:22,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:22,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:22,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:22,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:22,998 INFO L87 Difference]: Start difference. First operand 376 states and 581 transitions. Second operand 5 states. [2020-10-13 15:41:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:24,142 INFO L93 Difference]: Finished difference Result 817 states and 1275 transitions. [2020-10-13 15:41:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:24,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:41:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:24,145 INFO L225 Difference]: With dead ends: 817 [2020-10-13 15:41:24,145 INFO L226 Difference]: Without dead ends: 466 [2020-10-13 15:41:24,146 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 15:41:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-13 15:41:24,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 413. [2020-10-13 15:41:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-10-13 15:41:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 649 transitions. [2020-10-13 15:41:24,154 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 649 transitions. Word has length 122 [2020-10-13 15:41:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:24,154 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 649 transitions. [2020-10-13 15:41:24,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 649 transitions. [2020-10-13 15:41:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:41:24,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:24,156 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:24,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:41:24,156 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:24,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1334166027, now seen corresponding path program 1 times [2020-10-13 15:41:24,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:24,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579660741] [2020-10-13 15:41:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:24,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:24,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:41:24,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:41:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-13 15:41:24,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:41:24,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:24,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:24,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:24,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:24,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:41:24,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:24,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:41:24,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579660741] [2020-10-13 15:41:24,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:24,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:24,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297313238] [2020-10-13 15:41:24,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:24,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:24,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:24,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:24,673 INFO L87 Difference]: Start difference. First operand 413 states and 649 transitions. Second operand 5 states. [2020-10-13 15:41:25,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:25,757 INFO L93 Difference]: Finished difference Result 836 states and 1321 transitions. [2020-10-13 15:41:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:25,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:41:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:25,760 INFO L225 Difference]: With dead ends: 836 [2020-10-13 15:41:25,760 INFO L226 Difference]: Without dead ends: 448 [2020-10-13 15:41:25,761 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 15:41:25,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-13 15:41:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 413. [2020-10-13 15:41:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-10-13 15:41:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 648 transitions. [2020-10-13 15:41:25,767 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 648 transitions. Word has length 123 [2020-10-13 15:41:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:25,768 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 648 transitions. [2020-10-13 15:41:25,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 648 transitions. [2020-10-13 15:41:25,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:41:25,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:25,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:25,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:41:25,770 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:25,770 INFO L82 PathProgramCache]: Analyzing trace with hash 100245784, now seen corresponding path program 1 times [2020-10-13 15:41:25,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:25,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473598551] [2020-10-13 15:41:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:25,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:27,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:27,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:41:27,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:41:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1835 [2020-10-13 15:41:27,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 15:41:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:41:27,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:27,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:27,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:27,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:27,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:27,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:27,709 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 15:41:27,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473598551] [2020-10-13 15:41:27,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:27,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:27,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224361092] [2020-10-13 15:41:27,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:27,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:27,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:27,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:27,710 INFO L87 Difference]: Start difference. First operand 413 states and 648 transitions. Second operand 5 states. [2020-10-13 15:41:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:28,887 INFO L93 Difference]: Finished difference Result 886 states and 1401 transitions. [2020-10-13 15:41:28,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:28,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:41:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:28,890 INFO L225 Difference]: With dead ends: 886 [2020-10-13 15:41:28,890 INFO L226 Difference]: Without dead ends: 498 [2020-10-13 15:41:28,891 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 15:41:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-13 15:41:28,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 448. [2020-10-13 15:41:28,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-13 15:41:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 712 transitions. [2020-10-13 15:41:28,899 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 712 transitions. Word has length 123 [2020-10-13 15:41:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:28,900 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 712 transitions. [2020-10-13 15:41:28,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 712 transitions. [2020-10-13 15:41:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:41:28,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:28,902 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:28,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:41:28,902 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:28,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:28,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1706820295, now seen corresponding path program 1 times [2020-10-13 15:41:28,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:28,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91094842] [2020-10-13 15:41:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:29,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:29,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:41:29,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:41:29,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-10-13 15:41:29,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:29,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:29,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:41:29,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:41:29,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:29,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:29,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:29,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:29,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:29,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:29,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:29,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:29,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:29,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:41:29,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91094842] [2020-10-13 15:41:29,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:29,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:29,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184191808] [2020-10-13 15:41:29,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:29,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:29,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:29,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:29,938 INFO L87 Difference]: Start difference. First operand 448 states and 712 transitions. Second operand 5 states. [2020-10-13 15:41:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:30,790 INFO L93 Difference]: Finished difference Result 899 states and 1432 transitions. [2020-10-13 15:41:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:30,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:41:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:30,793 INFO L225 Difference]: With dead ends: 899 [2020-10-13 15:41:30,793 INFO L226 Difference]: Without dead ends: 476 [2020-10-13 15:41:30,794 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 15:41:30,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-13 15:41:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 448. [2020-10-13 15:41:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-13 15:41:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 711 transitions. [2020-10-13 15:41:30,804 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 711 transitions. Word has length 123 [2020-10-13 15:41:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:30,804 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 711 transitions. [2020-10-13 15:41:30,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 711 transitions. [2020-10-13 15:41:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:41:30,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:30,806 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:30,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:41:30,806 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:30,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:30,806 INFO L82 PathProgramCache]: Analyzing trace with hash -676501745, now seen corresponding path program 1 times [2020-10-13 15:41:30,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:30,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047617175] [2020-10-13 15:41:30,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:31,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:41:31,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:41:31,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-13 15:41:31,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:41:31,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:31,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:31,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:31,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:31,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:31,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:31,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:41:31,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047617175] [2020-10-13 15:41:31,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:31,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:31,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922673551] [2020-10-13 15:41:31,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:31,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:31,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:31,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:31,654 INFO L87 Difference]: Start difference. First operand 448 states and 711 transitions. Second operand 5 states. [2020-10-13 15:41:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:32,767 INFO L93 Difference]: Finished difference Result 903 states and 1441 transitions. [2020-10-13 15:41:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:32,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:41:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:32,770 INFO L225 Difference]: With dead ends: 903 [2020-10-13 15:41:32,770 INFO L226 Difference]: Without dead ends: 480 [2020-10-13 15:41:32,771 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 15:41:32,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-13 15:41:32,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 448. [2020-10-13 15:41:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-13 15:41:32,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 710 transitions. [2020-10-13 15:41:32,785 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 710 transitions. Word has length 124 [2020-10-13 15:41:32,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:32,785 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 710 transitions. [2020-10-13 15:41:32,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 710 transitions. [2020-10-13 15:41:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:41:32,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:32,787 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:32,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:41:32,787 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:32,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:32,787 INFO L82 PathProgramCache]: Analyzing trace with hash -299261042, now seen corresponding path program 1 times [2020-10-13 15:41:32,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:32,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678991902] [2020-10-13 15:41:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:32,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:32,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:33,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:41:33,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:41:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-13 15:41:33,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:41:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:41:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:33,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:33,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:33,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:41:33,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678991902] [2020-10-13 15:41:33,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:33,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:33,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607202535] [2020-10-13 15:41:33,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:33,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:33,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:33,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:33,946 INFO L87 Difference]: Start difference. First operand 448 states and 710 transitions. Second operand 5 states. [2020-10-13 15:41:34,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:34,770 INFO L93 Difference]: Finished difference Result 897 states and 1426 transitions. [2020-10-13 15:41:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:34,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:41:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:34,773 INFO L225 Difference]: With dead ends: 897 [2020-10-13 15:41:34,773 INFO L226 Difference]: Without dead ends: 474 [2020-10-13 15:41:34,774 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 15:41:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-10-13 15:41:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 448. [2020-10-13 15:41:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-13 15:41:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 709 transitions. [2020-10-13 15:41:34,782 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 709 transitions. Word has length 124 [2020-10-13 15:41:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:34,783 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 709 transitions. [2020-10-13 15:41:34,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:34,783 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 709 transitions. [2020-10-13 15:41:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:41:34,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:34,784 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:34,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:41:34,784 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:34,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:34,784 INFO L82 PathProgramCache]: Analyzing trace with hash -231701041, now seen corresponding path program 1 times [2020-10-13 15:41:34,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:34,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325951169] [2020-10-13 15:41:34,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:34,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:34,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:35,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:35,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:41:35,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:41:35,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-13 15:41:35,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:41:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:41:35,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:35,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:35,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:35,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:35,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:35,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:35,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:35,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:35,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:35,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:35,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:35,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:35,444 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 15:41:35,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325951169] [2020-10-13 15:41:35,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:35,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:35,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003848463] [2020-10-13 15:41:35,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:35,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:35,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:35,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:35,445 INFO L87 Difference]: Start difference. First operand 448 states and 709 transitions. Second operand 5 states. [2020-10-13 15:41:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:36,318 INFO L93 Difference]: Finished difference Result 896 states and 1423 transitions. [2020-10-13 15:41:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:36,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:41:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:36,322 INFO L225 Difference]: With dead ends: 896 [2020-10-13 15:41:36,322 INFO L226 Difference]: Without dead ends: 473 [2020-10-13 15:41:36,323 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 15:41:36,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-10-13 15:41:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 448. [2020-10-13 15:41:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-13 15:41:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 708 transitions. [2020-10-13 15:41:36,330 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 708 transitions. Word has length 124 [2020-10-13 15:41:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:36,330 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 708 transitions. [2020-10-13 15:41:36,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 708 transitions. [2020-10-13 15:41:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:41:36,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:36,331 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:36,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:41:36,332 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:36,332 INFO L82 PathProgramCache]: Analyzing trace with hash 2090169494, now seen corresponding path program 1 times [2020-10-13 15:41:36,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:36,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204126952] [2020-10-13 15:41:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:36,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:36,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:36,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:37,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:41,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:41,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:41:41,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:41:41,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:41:41,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:41,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:41,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:41:41,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:41:41,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:41,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:41,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:41,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:41,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:41,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:41,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:41:41,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:41,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:41,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:41,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:41,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:41,421 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 15:41:41,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204126952] [2020-10-13 15:41:41,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:41,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:41,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459795409] [2020-10-13 15:41:41,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:41,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:41,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:41,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:41,422 INFO L87 Difference]: Start difference. First operand 448 states and 708 transitions. Second operand 5 states. [2020-10-13 15:41:42,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:42,300 INFO L93 Difference]: Finished difference Result 895 states and 1420 transitions. [2020-10-13 15:41:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:42,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:41:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:42,304 INFO L225 Difference]: With dead ends: 895 [2020-10-13 15:41:42,304 INFO L226 Difference]: Without dead ends: 472 [2020-10-13 15:41:42,305 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 15:41:42,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-13 15:41:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 448. [2020-10-13 15:41:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-13 15:41:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 707 transitions. [2020-10-13 15:41:42,314 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 707 transitions. Word has length 125 [2020-10-13 15:41:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:42,314 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 707 transitions. [2020-10-13 15:41:42,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:42,314 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 707 transitions. [2020-10-13 15:41:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:41:42,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:42,315 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:42,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:41:42,315 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:42,316 INFO L82 PathProgramCache]: Analyzing trace with hash 454634114, now seen corresponding path program 1 times [2020-10-13 15:41:42,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:42,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308999940] [2020-10-13 15:41:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:42,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:42,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:47,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:47,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:41:47,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 15:41:47,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:41:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:41:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:47,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:47,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:47,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:47,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:47,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:47,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:47,447 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 15:41:47,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308999940] [2020-10-13 15:41:47,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:47,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:47,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487823641] [2020-10-13 15:41:47,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:47,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:47,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:47,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:47,449 INFO L87 Difference]: Start difference. First operand 448 states and 707 transitions. Second operand 5 states. [2020-10-13 15:41:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:48,331 INFO L93 Difference]: Finished difference Result 895 states and 1418 transitions. [2020-10-13 15:41:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:48,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:41:48,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:48,334 INFO L225 Difference]: With dead ends: 895 [2020-10-13 15:41:48,334 INFO L226 Difference]: Without dead ends: 472 [2020-10-13 15:41:48,335 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 15:41:48,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-13 15:41:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 448. [2020-10-13 15:41:48,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-13 15:41:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 706 transitions. [2020-10-13 15:41:48,346 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 706 transitions. Word has length 125 [2020-10-13 15:41:48,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:48,346 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 706 transitions. [2020-10-13 15:41:48,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:48,346 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 706 transitions. [2020-10-13 15:41:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:41:48,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:48,348 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:48,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:41:48,348 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:48,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:48,349 INFO L82 PathProgramCache]: Analyzing trace with hash -2144905527, now seen corresponding path program 1 times [2020-10-13 15:41:48,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:48,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720952144] [2020-10-13 15:41:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:48,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:48,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:48,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:53,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:41:53,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:41:53,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:41:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:41:53,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:53,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:53,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:53,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:53,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:53,451 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 15:41:53,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720952144] [2020-10-13 15:41:53,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:53,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:53,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305175789] [2020-10-13 15:41:53,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:53,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:53,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:53,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:53,453 INFO L87 Difference]: Start difference. First operand 448 states and 706 transitions. Second operand 5 states. [2020-10-13 15:41:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:54,317 INFO L93 Difference]: Finished difference Result 895 states and 1416 transitions. [2020-10-13 15:41:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:54,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:41:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:54,321 INFO L225 Difference]: With dead ends: 895 [2020-10-13 15:41:54,321 INFO L226 Difference]: Without dead ends: 472 [2020-10-13 15:41:54,322 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 15:41:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-13 15:41:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 448. [2020-10-13 15:41:54,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-13 15:41:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 705 transitions. [2020-10-13 15:41:54,329 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 705 transitions. Word has length 126 [2020-10-13 15:41:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:54,329 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 705 transitions. [2020-10-13 15:41:54,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 705 transitions. [2020-10-13 15:41:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:41:54,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:54,330 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:54,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:41:54,331 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:54,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:54,331 INFO L82 PathProgramCache]: Analyzing trace with hash -573317955, now seen corresponding path program 1 times [2020-10-13 15:41:54,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:54,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280715505] [2020-10-13 15:41:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:54,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:55,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking...