/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/loops/s3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:36:03,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:36:03,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:36:04,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:36:04,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:36:04,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:36:04,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:36:04,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:36:04,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:36:04,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:36:04,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:36:04,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:36:04,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:36:04,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:36:04,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:36:04,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:36:04,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:36:04,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:36:04,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:36:04,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:36:04,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:36:04,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:36:04,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:36:04,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:36:04,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:36:04,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:36:04,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:36:04,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:36:04,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:36:04,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:36:04,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:36:04,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:36:04,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:36:04,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:36:04,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:36:04,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:36:04,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:36:04,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:36:04,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:36:04,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:36:04,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:36:04,057 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 [2020-10-27 20:36:04,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:36:04,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:36:04,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:36:04,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:36:04,086 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:36:04,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:36:04,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:36:04,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:36:04,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:36:04,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:36:04,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:36:04,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:36:04,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:36:04,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:36:04,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:36:04,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:36:04,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:36:04,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:36:04,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:36:04,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:36:04,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:36:04,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:36:04,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:36:04,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:36:04,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:36:04,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:36:04,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:36:04,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:36:04,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:36:04,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:36:04,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:36:04,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:36:04,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:36:04,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:36:04,484 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:36:04,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/s3.i [2020-10-27 20:36:04,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/930fb71a7/be867b497cd94ab6b6303c03a655c113/FLAG917f8481c [2020-10-27 20:36:05,345 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:36:05,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/s3.i [2020-10-27 20:36:05,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/930fb71a7/be867b497cd94ab6b6303c03a655c113/FLAG917f8481c [2020-10-27 20:36:05,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/930fb71a7/be867b497cd94ab6b6303c03a655c113 [2020-10-27 20:36:05,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:36:05,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:36:05,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:36:05,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:36:05,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:36:05,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:36:05" (1/1) ... [2020-10-27 20:36:05,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1b67b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05, skipping insertion in model container [2020-10-27 20:36:05,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:36:05" (1/1) ... [2020-10-27 20:36:05,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:36:05,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:36:06,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:36:06,365 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:36:06,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:36:06,627 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:36:06,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:06 WrapperNode [2020-10-27 20:36:06,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:36:06,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:36:06,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:36:06,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:36:06,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:06" (1/1) ... [2020-10-27 20:36:06,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:06" (1/1) ... [2020-10-27 20:36:06,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:06" (1/1) ... [2020-10-27 20:36:06,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:06" (1/1) ... [2020-10-27 20:36:06,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:06" (1/1) ... [2020-10-27 20:36:06,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:06" (1/1) ... [2020-10-27 20:36:06,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:06" (1/1) ... [2020-10-27 20:36:06,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:36:06,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:36:06,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:36:06,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:36:06,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:06" (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 [2020-10-27 20:36:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:36:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:36:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:36:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2020-10-27 20:36:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2020-10-27 20:36:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:36:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-27 20:36:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-27 20:36:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-27 20:36:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-27 20:36:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:36:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:36:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:36:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:36:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 20:36:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:36:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-27 20:36:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-27 20:36:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2020-10-27 20:36:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-27 20:36:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-27 20:36:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2020-10-27 20:36:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-27 20:36:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 20:36:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:36:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 20:36:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:36:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 20:36:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:36:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 20:36:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-27 20:36:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:36:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:36:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:36:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-27 20:36:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-27 20:36:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-27 20:36:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-27 20:36:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:36:07,469 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:36:08,068 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-27 20:36:08,069 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-27 20:36:08,128 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:36:08,128 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:36:08,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:36:08 BoogieIcfgContainer [2020-10-27 20:36:08,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:36:08,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:36:08,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:36:08,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:36:08,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:36:05" (1/3) ... [2020-10-27 20:36:08,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1916c5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:36:08, skipping insertion in model container [2020-10-27 20:36:08,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:06" (2/3) ... [2020-10-27 20:36:08,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1916c5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:36:08, skipping insertion in model container [2020-10-27 20:36:08,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:36:08" (3/3) ... [2020-10-27 20:36:08,145 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2020-10-27 20:36:08,159 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:36:08,166 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:36:08,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:36:08,227 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:36:08,228 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:36:08,228 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:36:08,228 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:36:08,228 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:36:08,228 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:36:08,228 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:36:08,229 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:36:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-10-27 20:36:08,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 20:36:08,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:08,262 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] [2020-10-27 20:36:08,262 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:08,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:08,269 INFO L82 PathProgramCache]: Analyzing trace with hash 808169309, now seen corresponding path program 1 times [2020-10-27 20:36:08,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:08,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092736302] [2020-10-27 20:36:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:08,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:10,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:10,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 20:36:10,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:36:10,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-27 20:36:10,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:36:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 20:36:10,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:36:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:10,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:10,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:10,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:10,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:36:10,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:36:10,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092736302] [2020-10-27 20:36:10,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:10,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:36:10,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869323551] [2020-10-27 20:36:10,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:36:10,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:10,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:36:10,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:36:10,263 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-10-27 20:36:10,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:10,861 INFO L93 Difference]: Finished difference Result 390 states and 643 transitions. [2020-10-27 20:36:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:36:10,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-27 20:36:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:10,874 INFO L225 Difference]: With dead ends: 390 [2020-10-27 20:36:10,874 INFO L226 Difference]: Without dead ends: 224 [2020-10-27 20:36:10,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:36:10,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-27 20:36:10,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-10-27 20:36:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-27 20:36:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 328 transitions. [2020-10-27 20:36:10,970 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 328 transitions. Word has length 31 [2020-10-27 20:36:10,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:10,971 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 328 transitions. [2020-10-27 20:36:10,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:36:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 328 transitions. [2020-10-27 20:36:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 20:36:10,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:10,979 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] [2020-10-27 20:36:10,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:36:10,983 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:10,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:10,983 INFO L82 PathProgramCache]: Analyzing trace with hash -229978524, now seen corresponding path program 1 times [2020-10-27 20:36:10,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:10,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149390701] [2020-10-27 20:36:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:11,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:11,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:16,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:16,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 20:36:16,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:36:16,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 20:36:16,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:36:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 20:36:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:36:16,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:16,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:16,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:16,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:16,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:16,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:36:16,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:16,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:16,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:16,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:36:16,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149390701] [2020-10-27 20:36:16,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:16,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:36:16,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139612388] [2020-10-27 20:36:16,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:36:16,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:16,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:36:16,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:36:16,193 INFO L87 Difference]: Start difference. First operand 224 states and 328 transitions. Second operand 5 states. [2020-10-27 20:36:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:16,939 INFO L93 Difference]: Finished difference Result 367 states and 542 transitions. [2020-10-27 20:36:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:36:16,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-27 20:36:16,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:16,943 INFO L225 Difference]: With dead ends: 367 [2020-10-27 20:36:16,945 INFO L226 Difference]: Without dead ends: 259 [2020-10-27 20:36:16,947 INFO L677 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 [2020-10-27 20:36:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-27 20:36:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 242. [2020-10-27 20:36:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-27 20:36:16,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 358 transitions. [2020-10-27 20:36:16,978 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 358 transitions. Word has length 46 [2020-10-27 20:36:16,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:16,978 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 358 transitions. [2020-10-27 20:36:16,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:36:16,978 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 358 transitions. [2020-10-27 20:36:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 20:36:16,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:16,986 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 20:36:16,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:36:16,986 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:16,987 INFO L82 PathProgramCache]: Analyzing trace with hash -521691172, now seen corresponding path program 1 times [2020-10-27 20:36:16,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:16,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952361382] [2020-10-27 20:36:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:17,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:17,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:17,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:22,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 20:36:22,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:36:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 20:36:22,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:36:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 20:36:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:36:22,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:22,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:22,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:22,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:22,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:36:22,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:22,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 20:36:22,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952361382] [2020-10-27 20:36:22,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:22,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:36:22,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76219834] [2020-10-27 20:36:22,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:36:22,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:22,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:36:22,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:36:22,256 INFO L87 Difference]: Start difference. First operand 242 states and 358 transitions. Second operand 6 states. [2020-10-27 20:36:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:23,150 INFO L93 Difference]: Finished difference Result 535 states and 793 transitions. [2020-10-27 20:36:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:36:23,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-27 20:36:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:23,153 INFO L225 Difference]: With dead ends: 535 [2020-10-27 20:36:23,154 INFO L226 Difference]: Without dead ends: 306 [2020-10-27 20:36:23,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:36:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-27 20:36:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 276. [2020-10-27 20:36:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-27 20:36:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 414 transitions. [2020-10-27 20:36:23,169 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 414 transitions. Word has length 61 [2020-10-27 20:36:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:23,169 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 414 transitions. [2020-10-27 20:36:23,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:36:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 414 transitions. [2020-10-27 20:36:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 20:36:23,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:23,172 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 20:36:23,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:36:23,172 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:23,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1364582284, now seen corresponding path program 1 times [2020-10-27 20:36:23,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:23,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558970709] [2020-10-27 20:36:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:23,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:25,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:28,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:28,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 20:36:28,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:36:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 20:36:28,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:36:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:36:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:36:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:28,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:28,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:28,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:28,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:28,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:28,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:36:28,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:36:28,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558970709] [2020-10-27 20:36:28,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:28,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:36:28,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644060930] [2020-10-27 20:36:28,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:36:28,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:36:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:36:28,385 INFO L87 Difference]: Start difference. First operand 276 states and 414 transitions. Second operand 5 states. [2020-10-27 20:36:29,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:29,523 INFO L93 Difference]: Finished difference Result 725 states and 1091 transitions. [2020-10-27 20:36:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:36:29,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-27 20:36:29,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:29,530 INFO L225 Difference]: With dead ends: 725 [2020-10-27 20:36:29,531 INFO L226 Difference]: Without dead ends: 462 [2020-10-27 20:36:29,532 INFO L677 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 [2020-10-27 20:36:29,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-27 20:36:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 326. [2020-10-27 20:36:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-27 20:36:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 500 transitions. [2020-10-27 20:36:29,549 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 500 transitions. Word has length 64 [2020-10-27 20:36:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:29,550 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 500 transitions. [2020-10-27 20:36:29,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:36:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 500 transitions. [2020-10-27 20:36:29,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 20:36:29,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:29,557 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 20:36:29,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:36:29,557 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:29,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1505130894, now seen corresponding path program 1 times [2020-10-27 20:36:29,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:29,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943162412] [2020-10-27 20:36:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:29,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:31,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:31,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:34,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:34,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 20:36:34,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:36:34,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 20:36:34,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:36:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:36:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:36:34,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:34,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:34,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:34,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:34,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:34,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:36:34,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:34,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:36:34,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943162412] [2020-10-27 20:36:34,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:34,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:36:34,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516300192] [2020-10-27 20:36:34,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:36:34,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:34,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:36:34,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:36:34,782 INFO L87 Difference]: Start difference. First operand 326 states and 500 transitions. Second operand 5 states. [2020-10-27 20:36:35,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:35,658 INFO L93 Difference]: Finished difference Result 722 states and 1107 transitions. [2020-10-27 20:36:35,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:36:35,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-27 20:36:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:35,662 INFO L225 Difference]: With dead ends: 722 [2020-10-27 20:36:35,662 INFO L226 Difference]: Without dead ends: 409 [2020-10-27 20:36:35,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:36:35,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-27 20:36:35,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 366. [2020-10-27 20:36:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-27 20:36:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 568 transitions. [2020-10-27 20:36:35,682 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 568 transitions. Word has length 64 [2020-10-27 20:36:35,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:35,683 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 568 transitions. [2020-10-27 20:36:35,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:36:35,683 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 568 transitions. [2020-10-27 20:36:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 20:36:35,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:35,685 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 20:36:35,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:36:35,685 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:35,686 INFO L82 PathProgramCache]: Analyzing trace with hash -784599190, now seen corresponding path program 1 times [2020-10-27 20:36:35,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:35,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429928348] [2020-10-27 20:36:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:35,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:35,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:37,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:40,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:40,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 20:36:40,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:36:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4504 [2020-10-27 20:36:40,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:40,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:36:40,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:36:40,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 20:36:40,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:40,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:40,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:40,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:40,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:36:40,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:36:40,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429928348] [2020-10-27 20:36:40,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:40,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:36:40,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745785362] [2020-10-27 20:36:40,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:36:40,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:40,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:36:40,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:36:40,378 INFO L87 Difference]: Start difference. First operand 366 states and 568 transitions. Second operand 5 states. [2020-10-27 20:36:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:41,552 INFO L93 Difference]: Finished difference Result 849 states and 1304 transitions. [2020-10-27 20:36:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:36:41,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-27 20:36:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:41,558 INFO L225 Difference]: With dead ends: 849 [2020-10-27 20:36:41,558 INFO L226 Difference]: Without dead ends: 496 [2020-10-27 20:36:41,561 INFO L677 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 [2020-10-27 20:36:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-10-27 20:36:41,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 368. [2020-10-27 20:36:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-10-27 20:36:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 570 transitions. [2020-10-27 20:36:41,593 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 570 transitions. Word has length 65 [2020-10-27 20:36:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:41,593 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 570 transitions. [2020-10-27 20:36:41,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:36:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 570 transitions. [2020-10-27 20:36:41,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 20:36:41,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:41,595 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 20:36:41,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:36:41,596 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:41,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1315238481, now seen corresponding path program 1 times [2020-10-27 20:36:41,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:41,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267181182] [2020-10-27 20:36:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:44,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:44,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 20:36:44,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:36:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2610 [2020-10-27 20:36:44,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:36:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:36:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 20:36:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:44,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:44,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:44,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:44,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:44,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:36:44,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:36:44,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267181182] [2020-10-27 20:36:44,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:44,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:36:44,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546777235] [2020-10-27 20:36:44,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:36:44,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:44,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:36:44,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:36:44,349 INFO L87 Difference]: Start difference. First operand 368 states and 570 transitions. Second operand 5 states. [2020-10-27 20:36:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:45,659 INFO L93 Difference]: Finished difference Result 851 states and 1304 transitions. [2020-10-27 20:36:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:36:45,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-27 20:36:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:45,665 INFO L225 Difference]: With dead ends: 851 [2020-10-27 20:36:45,665 INFO L226 Difference]: Without dead ends: 496 [2020-10-27 20:36:45,667 INFO L677 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 [2020-10-27 20:36:45,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-10-27 20:36:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 370. [2020-10-27 20:36:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-27 20:36:45,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 572 transitions. [2020-10-27 20:36:45,683 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 572 transitions. Word has length 66 [2020-10-27 20:36:45,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:45,683 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 572 transitions. [2020-10-27 20:36:45,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:36:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 572 transitions. [2020-10-27 20:36:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 20:36:45,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:45,685 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 20:36:45,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:36:45,685 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:45,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:45,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1978874703, now seen corresponding path program 1 times [2020-10-27 20:36:45,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:45,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752441738] [2020-10-27 20:36:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:45,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:45,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:46,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:48,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:48,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 20:36:48,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:36:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2698 [2020-10-27 20:36:48,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:36:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:36:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 20:36:48,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:48,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:48,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:48,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:48,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:48,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:36:48,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:48,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:36:48,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752441738] [2020-10-27 20:36:48,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:48,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:36:48,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647460899] [2020-10-27 20:36:48,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:36:48,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:48,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:36:48,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:36:48,540 INFO L87 Difference]: Start difference. First operand 370 states and 572 transitions. Second operand 5 states. [2020-10-27 20:36:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:49,908 INFO L93 Difference]: Finished difference Result 844 states and 1292 transitions. [2020-10-27 20:36:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:36:49,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-27 20:36:49,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:49,913 INFO L225 Difference]: With dead ends: 844 [2020-10-27 20:36:49,913 INFO L226 Difference]: Without dead ends: 487 [2020-10-27 20:36:49,916 INFO L677 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 [2020-10-27 20:36:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-10-27 20:36:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 372. [2020-10-27 20:36:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-27 20:36:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 574 transitions. [2020-10-27 20:36:49,933 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 574 transitions. Word has length 67 [2020-10-27 20:36:49,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:49,934 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 574 transitions. [2020-10-27 20:36:49,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:36:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 574 transitions. [2020-10-27 20:36:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 20:36:49,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:49,936 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:36:49,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:36:49,936 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:49,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:49,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1344629822, now seen corresponding path program 1 times [2020-10-27 20:36:49,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:49,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264891986] [2020-10-27 20:36:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:50,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:51,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:51,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:54,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 20:36:54,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:36:54,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:36:54,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:36:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 20:36:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 20:36:54,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:55,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:55,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:55,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:55,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:36:55,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:55,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:36:55,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264891986] [2020-10-27 20:36:55,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:55,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:36:55,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333708876] [2020-10-27 20:36:55,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:36:55,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:55,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:36:55,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:36:55,108 INFO L87 Difference]: Start difference. First operand 372 states and 574 transitions. Second operand 5 states. [2020-10-27 20:36:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:55,968 INFO L93 Difference]: Finished difference Result 824 states and 1270 transitions. [2020-10-27 20:36:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:36:55,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-27 20:36:55,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:55,973 INFO L225 Difference]: With dead ends: 824 [2020-10-27 20:36:55,974 INFO L226 Difference]: Without dead ends: 465 [2020-10-27 20:36:55,975 INFO L677 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 [2020-10-27 20:36:55,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-10-27 20:36:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 416. [2020-10-27 20:36:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-27 20:36:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 650 transitions. [2020-10-27 20:36:55,993 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 650 transitions. Word has length 82 [2020-10-27 20:36:55,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:55,993 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 650 transitions. [2020-10-27 20:36:55,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:36:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 650 transitions. [2020-10-27 20:36:55,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 20:36:55,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:55,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:36:55,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:36:55,996 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:55,996 INFO L82 PathProgramCache]: Analyzing trace with hash -738213724, now seen corresponding path program 1 times [2020-10-27 20:36:55,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:55,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335314170] [2020-10-27 20:36:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:56,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:56,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:56,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:01,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:01,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 20:37:01,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:37:01,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 20:37:01,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:37:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 20:37:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 20:37:01,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:01,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:01,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:01,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:01,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:01,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:37:01,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:37:01,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335314170] [2020-10-27 20:37:01,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:01,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:37:01,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918281447] [2020-10-27 20:37:01,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:37:01,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:01,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:37:01,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:37:01,134 INFO L87 Difference]: Start difference. First operand 416 states and 650 transitions. Second operand 4 states. [2020-10-27 20:37:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:01,607 INFO L93 Difference]: Finished difference Result 419 states and 652 transitions. [2020-10-27 20:37:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:37:01,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-27 20:37:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:01,610 INFO L225 Difference]: With dead ends: 419 [2020-10-27 20:37:01,610 INFO L226 Difference]: Without dead ends: 416 [2020-10-27 20:37:01,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:37:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-27 20:37:01,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2020-10-27 20:37:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-27 20:37:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 649 transitions. [2020-10-27 20:37:01,626 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 649 transitions. Word has length 85 [2020-10-27 20:37:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:01,626 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 649 transitions. [2020-10-27 20:37:01,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:37:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 649 transitions. [2020-10-27 20:37:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 20:37:01,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:01,628 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:37:01,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:37:01,629 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:01,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:01,629 INFO L82 PathProgramCache]: Analyzing trace with hash -837096087, now seen corresponding path program 1 times [2020-10-27 20:37:01,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:01,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640439152] [2020-10-27 20:37:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:01,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:01,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:05,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:06,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:06,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 20:37:06,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:37:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 20:37:06,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:37:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 20:37:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 20:37:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:06,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:06,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:06,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:06,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:06,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:37:06,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:06,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:06,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:37:06,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640439152] [2020-10-27 20:37:06,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:06,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:37:06,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604054861] [2020-10-27 20:37:06,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:37:06,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:06,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:37:06,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:37:06,780 INFO L87 Difference]: Start difference. First operand 416 states and 649 transitions. Second operand 5 states. [2020-10-27 20:37:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:07,862 INFO L93 Difference]: Finished difference Result 1003 states and 1558 transitions. [2020-10-27 20:37:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:37:07,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-27 20:37:07,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:07,867 INFO L225 Difference]: With dead ends: 1003 [2020-10-27 20:37:07,867 INFO L226 Difference]: Without dead ends: 600 [2020-10-27 20:37:07,868 INFO L677 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 [2020-10-27 20:37:07,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-10-27 20:37:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 468. [2020-10-27 20:37:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-27 20:37:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 741 transitions. [2020-10-27 20:37:07,886 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 741 transitions. Word has length 87 [2020-10-27 20:37:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:07,886 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 741 transitions. [2020-10-27 20:37:07,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:37:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 741 transitions. [2020-10-27 20:37:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 20:37:07,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:07,888 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:37:07,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 20:37:07,889 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:07,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:07,889 INFO L82 PathProgramCache]: Analyzing trace with hash -318987465, now seen corresponding path program 1 times [2020-10-27 20:37:07,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:07,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454541353] [2020-10-27 20:37:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:07,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:08,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:12,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:12,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 20:37:12,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:37:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 20:37:12,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:37:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 20:37:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:37:12,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:13,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:13,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:13,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:13,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:13,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:37:13,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:13,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:37:13,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454541353] [2020-10-27 20:37:13,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:13,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:37:13,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546008539] [2020-10-27 20:37:13,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:37:13,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:13,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:37:13,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:37:13,051 INFO L87 Difference]: Start difference. First operand 468 states and 741 transitions. Second operand 5 states. [2020-10-27 20:37:13,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:13,914 INFO L93 Difference]: Finished difference Result 974 states and 1526 transitions. [2020-10-27 20:37:13,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:37:13,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-27 20:37:13,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:13,922 INFO L225 Difference]: With dead ends: 974 [2020-10-27 20:37:13,922 INFO L226 Difference]: Without dead ends: 519 [2020-10-27 20:37:13,923 INFO L677 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 [2020-10-27 20:37:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-10-27 20:37:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 464. [2020-10-27 20:37:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-27 20:37:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 733 transitions. [2020-10-27 20:37:13,940 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 733 transitions. Word has length 88 [2020-10-27 20:37:13,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:13,940 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 733 transitions. [2020-10-27 20:37:13,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:37:13,940 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 733 transitions. [2020-10-27 20:37:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 20:37:13,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:13,942 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:37:13,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 20:37:13,942 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:13,943 INFO L82 PathProgramCache]: Analyzing trace with hash 889065245, now seen corresponding path program 1 times [2020-10-27 20:37:13,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:13,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653742191] [2020-10-27 20:37:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:14,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:18,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:18,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 20:37:18,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:37:18,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 20:37:18,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:37:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 20:37:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 20:37:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:19,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:19,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:19,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:19,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:37:19,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:37:19,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653742191] [2020-10-27 20:37:19,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:19,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:37:19,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176558315] [2020-10-27 20:37:19,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:37:19,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:19,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:37:19,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:37:19,096 INFO L87 Difference]: Start difference. First operand 464 states and 733 transitions. Second operand 5 states. [2020-10-27 20:37:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:20,189 INFO L93 Difference]: Finished difference Result 1101 states and 1728 transitions. [2020-10-27 20:37:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:37:20,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-27 20:37:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:20,199 INFO L225 Difference]: With dead ends: 1101 [2020-10-27 20:37:20,200 INFO L226 Difference]: Without dead ends: 650 [2020-10-27 20:37:20,203 INFO L677 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 [2020-10-27 20:37:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-27 20:37:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 518. [2020-10-27 20:37:20,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-27 20:37:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 827 transitions. [2020-10-27 20:37:20,224 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 827 transitions. Word has length 91 [2020-10-27 20:37:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:20,224 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 827 transitions. [2020-10-27 20:37:20,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:37:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 827 transitions. [2020-10-27 20:37:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 20:37:20,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:20,226 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:37:20,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 20:37:20,227 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:20,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:20,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1652406275, now seen corresponding path program 1 times [2020-10-27 20:37:20,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:20,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565766032] [2020-10-27 20:37:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:20,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:20,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:23,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:25,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:25,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 20:37:25,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:37:25,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 20:37:25,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:25,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:37:25,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 20:37:25,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 20:37:25,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:25,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:25,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:25,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:25,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:37:25,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:25,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:37:25,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565766032] [2020-10-27 20:37:25,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:25,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:37:25,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712483263] [2020-10-27 20:37:25,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:37:25,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:25,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:37:25,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:37:25,359 INFO L87 Difference]: Start difference. First operand 518 states and 827 transitions. Second operand 5 states. [2020-10-27 20:37:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:26,444 INFO L93 Difference]: Finished difference Result 1146 states and 1808 transitions. [2020-10-27 20:37:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:37:26,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-27 20:37:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:26,449 INFO L225 Difference]: With dead ends: 1146 [2020-10-27 20:37:26,449 INFO L226 Difference]: Without dead ends: 641 [2020-10-27 20:37:26,452 INFO L677 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 [2020-10-27 20:37:26,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2020-10-27 20:37:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 516. [2020-10-27 20:37:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-27 20:37:26,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 825 transitions. [2020-10-27 20:37:26,472 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 825 transitions. Word has length 92 [2020-10-27 20:37:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:26,473 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 825 transitions. [2020-10-27 20:37:26,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:37:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 825 transitions. [2020-10-27 20:37:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 20:37:26,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:26,475 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:37:26,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 20:37:26,475 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:26,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:26,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1879692497, now seen corresponding path program 1 times [2020-10-27 20:37:26,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:26,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379511819] [2020-10-27 20:37:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:26,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:31,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:31,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 20:37:31,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:37:31,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 20:37:31,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:31,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:37:31,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 20:37:31,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 20:37:31,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:31,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:31,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:31,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:31,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:37:31,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:31,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:37:31,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379511819] [2020-10-27 20:37:31,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:31,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:37:31,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484416386] [2020-10-27 20:37:31,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:37:31,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:31,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:37:31,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:37:31,638 INFO L87 Difference]: Start difference. First operand 516 states and 825 transitions. Second operand 5 states. [2020-10-27 20:37:32,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:32,766 INFO L93 Difference]: Finished difference Result 1205 states and 1912 transitions. [2020-10-27 20:37:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:37:32,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-27 20:37:32,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:32,771 INFO L225 Difference]: With dead ends: 1205 [2020-10-27 20:37:32,771 INFO L226 Difference]: Without dead ends: 702 [2020-10-27 20:37:32,772 INFO L677 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 [2020-10-27 20:37:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-10-27 20:37:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 570. [2020-10-27 20:37:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-10-27 20:37:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 919 transitions. [2020-10-27 20:37:32,792 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 919 transitions. Word has length 97 [2020-10-27 20:37:32,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:32,792 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 919 transitions. [2020-10-27 20:37:32,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:37:32,792 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 919 transitions. [2020-10-27 20:37:32,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 20:37:32,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:32,794 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:37:32,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 20:37:32,795 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:32,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:32,795 INFO L82 PathProgramCache]: Analyzing trace with hash 43535537, now seen corresponding path program 1 times [2020-10-27 20:37:32,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:32,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903151218] [2020-10-27 20:37:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:37,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:37,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 20:37:37,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:37:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 20:37:37,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:37:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 20:37:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 20:37:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:37,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:37,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:37,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:37,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:37,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:37:37,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:37:37,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903151218] [2020-10-27 20:37:37,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:37,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:37:37,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024244399] [2020-10-27 20:37:37,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:37:37,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:37,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:37:37,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:37:37,968 INFO L87 Difference]: Start difference. First operand 570 states and 919 transitions. Second operand 5 states. [2020-10-27 20:37:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:39,194 INFO L93 Difference]: Finished difference Result 1313 states and 2100 transitions. [2020-10-27 20:37:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:37:39,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-27 20:37:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:39,199 INFO L225 Difference]: With dead ends: 1313 [2020-10-27 20:37:39,199 INFO L226 Difference]: Without dead ends: 756 [2020-10-27 20:37:39,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:37:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-27 20:37:39,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 570. [2020-10-27 20:37:39,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-10-27 20:37:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 919 transitions. [2020-10-27 20:37:39,222 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 919 transitions. Word has length 97 [2020-10-27 20:37:39,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:39,222 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 919 transitions. [2020-10-27 20:37:39,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:37:39,223 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 919 transitions. [2020-10-27 20:37:39,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 20:37:39,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:39,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:37:39,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 20:37:39,225 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:39,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1720262193, now seen corresponding path program 1 times [2020-10-27 20:37:39,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:39,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318140268] [2020-10-27 20:37:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:39,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:39,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:39,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:39,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:44,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:44,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 20:37:44,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:37:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 20:37:44,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:37:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 20:37:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 20:37:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:44,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:44,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:44,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:44,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:37:44,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:44,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:44,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:44,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:44,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:37:44,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318140268] [2020-10-27 20:37:44,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:44,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:37:44,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483480476] [2020-10-27 20:37:44,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:37:44,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:44,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:37:44,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:37:44,383 INFO L87 Difference]: Start difference. First operand 570 states and 919 transitions. Second operand 5 states. [2020-10-27 20:37:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:45,502 INFO L93 Difference]: Finished difference Result 1304 states and 2086 transitions. [2020-10-27 20:37:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:37:45,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-27 20:37:45,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:45,507 INFO L225 Difference]: With dead ends: 1304 [2020-10-27 20:37:45,508 INFO L226 Difference]: Without dead ends: 747 [2020-10-27 20:37:45,509 INFO L677 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 [2020-10-27 20:37:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-27 20:37:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 572. [2020-10-27 20:37:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-10-27 20:37:45,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 921 transitions. [2020-10-27 20:37:45,533 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 921 transitions. Word has length 98 [2020-10-27 20:37:45,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:45,533 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 921 transitions. [2020-10-27 20:37:45,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:37:45,533 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 921 transitions. [2020-10-27 20:37:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 20:37:45,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:45,535 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:37:45,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 20:37:45,536 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:45,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1210789103, now seen corresponding path program 1 times [2020-10-27 20:37:45,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:45,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062447417] [2020-10-27 20:37:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:45,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:45,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:45,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:50,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:50,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 20:37:50,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:37:50,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:37:50,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:37:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 20:37:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 20:37:50,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:50,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:50,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:50,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:50,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:37:50,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:50,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:37:50,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062447417] [2020-10-27 20:37:50,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:50,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:37:50,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311088341] [2020-10-27 20:37:50,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:37:50,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:50,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:37:50,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:37:50,701 INFO L87 Difference]: Start difference. First operand 572 states and 921 transitions. Second operand 5 states. [2020-10-27 20:37:51,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:51,843 INFO L93 Difference]: Finished difference Result 1254 states and 1996 transitions. [2020-10-27 20:37:51,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:37:51,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-27 20:37:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:51,848 INFO L225 Difference]: With dead ends: 1254 [2020-10-27 20:37:51,848 INFO L226 Difference]: Without dead ends: 695 [2020-10-27 20:37:51,850 INFO L677 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 [2020-10-27 20:37:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-27 20:37:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 518. [2020-10-27 20:37:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-27 20:37:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 827 transitions. [2020-10-27 20:37:51,869 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 827 transitions. Word has length 98 [2020-10-27 20:37:51,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:51,870 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 827 transitions. [2020-10-27 20:37:51,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:37:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 827 transitions. [2020-10-27 20:37:51,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 20:37:51,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:51,872 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:37:51,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 20:37:51,872 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:51,873 INFO L82 PathProgramCache]: Analyzing trace with hash -124382144, now seen corresponding path program 1 times [2020-10-27 20:37:51,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:51,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793894613] [2020-10-27 20:37:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:51,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:52,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:56,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:56,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 20:37:56,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:37:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 20:37:56,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:37:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:37:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 20:37:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:57,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:57,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:57,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:57,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:57,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:57,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:37:57,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:57,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:37:57,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793894613] [2020-10-27 20:37:57,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:57,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:37:57,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425584783] [2020-10-27 20:37:57,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:37:57,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:57,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:37:57,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:37:57,050 INFO L87 Difference]: Start difference. First operand 518 states and 827 transitions. Second operand 5 states. [2020-10-27 20:37:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:58,167 INFO L93 Difference]: Finished difference Result 1142 states and 1802 transitions. [2020-10-27 20:37:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:37:58,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-27 20:37:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:58,171 INFO L225 Difference]: With dead ends: 1142 [2020-10-27 20:37:58,171 INFO L226 Difference]: Without dead ends: 637 [2020-10-27 20:37:58,172 INFO L677 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 [2020-10-27 20:37:58,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-10-27 20:37:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 540. [2020-10-27 20:37:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-10-27 20:37:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 865 transitions. [2020-10-27 20:37:58,194 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 865 transitions. Word has length 103 [2020-10-27 20:37:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:58,194 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 865 transitions. [2020-10-27 20:37:58,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:37:58,194 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 865 transitions. [2020-10-27 20:37:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 20:37:58,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:58,198 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:37:58,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 20:37:58,198 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:58,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:58,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1910984642, now seen corresponding path program 1 times [2020-10-27 20:37:58,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:58,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940694636] [2020-10-27 20:37:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:58,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:58,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:03,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:03,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 20:38:03,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:38:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 20:38:03,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:38:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:38:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 20:38:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:03,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:03,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:03,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:03,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:03,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:03,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:03,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:38:03,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940694636] [2020-10-27 20:38:03,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:03,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:03,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641248863] [2020-10-27 20:38:03,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:03,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:03,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:03,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:03,374 INFO L87 Difference]: Start difference. First operand 540 states and 865 transitions. Second operand 5 states. [2020-10-27 20:38:04,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:04,522 INFO L93 Difference]: Finished difference Result 1164 states and 1838 transitions. [2020-10-27 20:38:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:38:04,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-27 20:38:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:04,526 INFO L225 Difference]: With dead ends: 1164 [2020-10-27 20:38:04,527 INFO L226 Difference]: Without dead ends: 637 [2020-10-27 20:38:04,528 INFO L677 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 [2020-10-27 20:38:04,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-10-27 20:38:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 544. [2020-10-27 20:38:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-27 20:38:04,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 871 transitions. [2020-10-27 20:38:04,553 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 871 transitions. Word has length 103 [2020-10-27 20:38:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:04,554 INFO L481 AbstractCegarLoop]: Abstraction has 544 states and 871 transitions. [2020-10-27 20:38:04,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:38:04,554 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 871 transitions. [2020-10-27 20:38:04,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 20:38:04,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:04,556 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:38:04,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 20:38:04,556 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:04,557 INFO L82 PathProgramCache]: Analyzing trace with hash 497703650, now seen corresponding path program 1 times [2020-10-27 20:38:04,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:04,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630925317] [2020-10-27 20:38:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:04,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:09,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:09,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 20:38:09,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:38:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 20:38:09,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:38:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:38:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 20:38:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:09,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:09,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:09,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:09,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:09,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:09,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:38:09,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630925317] [2020-10-27 20:38:09,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:09,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:09,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641551681] [2020-10-27 20:38:09,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:09,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:09,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:09,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:09,716 INFO L87 Difference]: Start difference. First operand 544 states and 871 transitions. Second operand 5 states. [2020-10-27 20:38:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:10,835 INFO L93 Difference]: Finished difference Result 1164 states and 1838 transitions. [2020-10-27 20:38:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:38:10,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-27 20:38:10,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:10,839 INFO L225 Difference]: With dead ends: 1164 [2020-10-27 20:38:10,839 INFO L226 Difference]: Without dead ends: 633 [2020-10-27 20:38:10,840 INFO L677 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 [2020-10-27 20:38:10,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-10-27 20:38:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 544. [2020-10-27 20:38:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-27 20:38:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 869 transitions. [2020-10-27 20:38:10,863 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 869 transitions. Word has length 104 [2020-10-27 20:38:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:10,863 INFO L481 AbstractCegarLoop]: Abstraction has 544 states and 869 transitions. [2020-10-27 20:38:10,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:38:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 869 transitions. [2020-10-27 20:38:10,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 20:38:10,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:10,866 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:38:10,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 20:38:10,866 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:10,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:10,867 INFO L82 PathProgramCache]: Analyzing trace with hash 48683460, now seen corresponding path program 1 times [2020-10-27 20:38:10,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:10,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080830349] [2020-10-27 20:38:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:11,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:15,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:15,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 20:38:15,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:38:15,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 20:38:15,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:15,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:38:15,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:38:15,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 20:38:15,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:16,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:16,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:16,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:16,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:16,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:16,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:38:16,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080830349] [2020-10-27 20:38:16,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:16,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:16,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077836510] [2020-10-27 20:38:16,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:16,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:16,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:16,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:16,035 INFO L87 Difference]: Start difference. First operand 544 states and 869 transitions. Second operand 5 states. [2020-10-27 20:38:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:17,087 INFO L93 Difference]: Finished difference Result 1160 states and 1830 transitions. [2020-10-27 20:38:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:38:17,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-27 20:38:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:17,093 INFO L225 Difference]: With dead ends: 1160 [2020-10-27 20:38:17,093 INFO L226 Difference]: Without dead ends: 629 [2020-10-27 20:38:17,094 INFO L677 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 [2020-10-27 20:38:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-10-27 20:38:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 546. [2020-10-27 20:38:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-10-27 20:38:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 871 transitions. [2020-10-27 20:38:17,116 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 871 transitions. Word has length 104 [2020-10-27 20:38:17,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:17,116 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 871 transitions. [2020-10-27 20:38:17,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:38:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 871 transitions. [2020-10-27 20:38:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 20:38:17,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:17,118 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:38:17,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 20:38:17,119 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:17,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:17,119 INFO L82 PathProgramCache]: Analyzing trace with hash -602157603, now seen corresponding path program 1 times [2020-10-27 20:38:17,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:17,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272177109] [2020-10-27 20:38:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:17,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:17,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:17,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:22,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:22,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 20:38:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:38:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 20:38:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:38:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 20:38:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 20:38:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:22,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:22,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:22,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:22,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:38:22,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272177109] [2020-10-27 20:38:22,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:22,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:22,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314637747] [2020-10-27 20:38:22,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:22,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:22,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:22,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:22,266 INFO L87 Difference]: Start difference. First operand 546 states and 871 transitions. Second operand 5 states. [2020-10-27 20:38:23,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:23,419 INFO L93 Difference]: Finished difference Result 1263 states and 2002 transitions. [2020-10-27 20:38:23,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:38:23,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-27 20:38:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:23,424 INFO L225 Difference]: With dead ends: 1263 [2020-10-27 20:38:23,424 INFO L226 Difference]: Without dead ends: 730 [2020-10-27 20:38:23,425 INFO L677 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 [2020-10-27 20:38:23,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-27 20:38:23,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 598. [2020-10-27 20:38:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-27 20:38:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 963 transitions. [2020-10-27 20:38:23,447 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 963 transitions. Word has length 105 [2020-10-27 20:38:23,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:23,448 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 963 transitions. [2020-10-27 20:38:23,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:38:23,448 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 963 transitions. [2020-10-27 20:38:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 20:38:23,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:23,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:38:23,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 20:38:23,450 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:23,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1625829053, now seen corresponding path program 1 times [2020-10-27 20:38:23,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:23,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273106780] [2020-10-27 20:38:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:23,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:23,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:28,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:28,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 20:38:28,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:38:28,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 20:38:28,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:38:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 20:38:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 20:38:28,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:28,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:28,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:28,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:28,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:38:28,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:28,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:38:28,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273106780] [2020-10-27 20:38:28,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:28,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:28,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051880290] [2020-10-27 20:38:28,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:28,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:28,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:28,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:28,600 INFO L87 Difference]: Start difference. First operand 598 states and 963 transitions. Second operand 5 states. [2020-10-27 20:38:29,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:29,705 INFO L93 Difference]: Finished difference Result 1306 states and 2080 transitions. [2020-10-27 20:38:29,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:38:29,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-27 20:38:29,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:29,709 INFO L225 Difference]: With dead ends: 1306 [2020-10-27 20:38:29,709 INFO L226 Difference]: Without dead ends: 721 [2020-10-27 20:38:29,710 INFO L677 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 [2020-10-27 20:38:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-10-27 20:38:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 544. [2020-10-27 20:38:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-27 20:38:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 869 transitions. [2020-10-27 20:38:29,730 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 869 transitions. Word has length 106 [2020-10-27 20:38:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:29,730 INFO L481 AbstractCegarLoop]: Abstraction has 544 states and 869 transitions. [2020-10-27 20:38:29,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:38:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 869 transitions. [2020-10-27 20:38:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 20:38:29,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:29,732 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 20:38:29,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 20:38:29,733 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:29,733 INFO L82 PathProgramCache]: Analyzing trace with hash -2128040016, now seen corresponding path program 1 times [2020-10-27 20:38:29,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:29,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946174128] [2020-10-27 20:38:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:29,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:29,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:34,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:34,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 20:38:34,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:38:34,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 20:38:34,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:38:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:38:34,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 20:38:34,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:34,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:34,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:34,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:34,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:34,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:34,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:34,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:38:34,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946174128] [2020-10-27 20:38:34,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:34,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:34,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027663134] [2020-10-27 20:38:34,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:34,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:34,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:34,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:34,886 INFO L87 Difference]: Start difference. First operand 544 states and 869 transitions. Second operand 5 states. [2020-10-27 20:38:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:35,952 INFO L93 Difference]: Finished difference Result 1146 states and 1810 transitions. [2020-10-27 20:38:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:38:35,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-27 20:38:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:35,957 INFO L225 Difference]: With dead ends: 1146 [2020-10-27 20:38:35,957 INFO L226 Difference]: Without dead ends: 615 [2020-10-27 20:38:35,959 INFO L677 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 [2020-10-27 20:38:35,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-10-27 20:38:35,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 546. [2020-10-27 20:38:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-10-27 20:38:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 871 transitions. [2020-10-27 20:38:35,978 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 871 transitions. Word has length 106 [2020-10-27 20:38:35,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:35,979 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 871 transitions. [2020-10-27 20:38:35,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:38:35,979 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 871 transitions. [2020-10-27 20:38:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 20:38:35,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:35,981 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-27 20:38:35,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 20:38:35,981 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:35,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:35,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1056503437, now seen corresponding path program 1 times [2020-10-27 20:38:35,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:35,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945103783] [2020-10-27 20:38:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:36,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:36,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:41,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:41,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 20:38:41,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:38:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 20:38:41,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:38:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:38:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:38:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:41,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:41,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:41,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:41,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:41,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:41,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:41,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 20:38:41,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945103783] [2020-10-27 20:38:41,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:41,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:41,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346339017] [2020-10-27 20:38:41,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:41,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:41,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:41,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:41,130 INFO L87 Difference]: Start difference. First operand 546 states and 871 transitions. Second operand 5 states. [2020-10-27 20:38:42,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:42,193 INFO L93 Difference]: Finished difference Result 1148 states and 1810 transitions. [2020-10-27 20:38:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:38:42,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-27 20:38:42,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:42,198 INFO L225 Difference]: With dead ends: 1148 [2020-10-27 20:38:42,198 INFO L226 Difference]: Without dead ends: 615 [2020-10-27 20:38:42,199 INFO L677 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 [2020-10-27 20:38:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-10-27 20:38:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 546. [2020-10-27 20:38:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-10-27 20:38:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 869 transitions. [2020-10-27 20:38:42,221 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 869 transitions. Word has length 109 [2020-10-27 20:38:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:42,222 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 869 transitions. [2020-10-27 20:38:42,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:38:42,222 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 869 transitions. [2020-10-27 20:38:42,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 20:38:42,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:42,224 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:38:42,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 20:38:42,224 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:42,228 INFO L82 PathProgramCache]: Analyzing trace with hash -432980977, now seen corresponding path program 1 times [2020-10-27 20:38:42,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:42,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294159958] [2020-10-27 20:38:42,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:42,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:47,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:47,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 20:38:47,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:38:47,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 20:38:47,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:47,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:38:47,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:38:47,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:38:47,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:47,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:47,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:47,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:47,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:47,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:47,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:38:47,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 20:38:47,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294159958] [2020-10-27 20:38:47,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:47,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:47,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062752614] [2020-10-27 20:38:47,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:47,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:47,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:47,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:47,395 INFO L87 Difference]: Start difference. First operand 546 states and 869 transitions. Second operand 5 states. [2020-10-27 20:38:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:48,410 INFO L93 Difference]: Finished difference Result 1142 states and 1799 transitions. [2020-10-27 20:38:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:38:48,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-27 20:38:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:48,414 INFO L225 Difference]: With dead ends: 1142 [2020-10-27 20:38:48,414 INFO L226 Difference]: Without dead ends: 609 [2020-10-27 20:38:48,415 INFO L677 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 [2020-10-27 20:38:48,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-10-27 20:38:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 546. [2020-10-27 20:38:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-10-27 20:38:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 867 transitions. [2020-10-27 20:38:48,434 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 867 transitions. Word has length 110 [2020-10-27 20:38:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:48,434 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 867 transitions. [2020-10-27 20:38:48,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:38:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 867 transitions. [2020-10-27 20:38:48,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 20:38:48,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:48,436 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2020-10-27 20:38:48,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 20:38:48,437 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:48,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:48,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1724049087, now seen corresponding path program 1 times [2020-10-27 20:38:48,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:48,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718326795] [2020-10-27 20:38:48,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:48,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:48,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:48,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:48,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:53,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:53,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 20:38:53,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:38:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 20:38:53,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:38:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 20:38:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:38:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:53,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:53,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:53,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:53,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:53,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:53,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:53,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:53,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:53,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:38:53,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718326795] [2020-10-27 20:38:53,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:53,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:53,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254867285] [2020-10-27 20:38:53,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:53,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:53,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:53,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:53,581 INFO L87 Difference]: Start difference. First operand 546 states and 867 transitions. Second operand 5 states. [2020-10-27 20:38:54,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:54,654 INFO L93 Difference]: Finished difference Result 1254 states and 1978 transitions. [2020-10-27 20:38:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:38:54,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-27 20:38:54,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:54,660 INFO L225 Difference]: With dead ends: 1254 [2020-10-27 20:38:54,660 INFO L226 Difference]: Without dead ends: 721 [2020-10-27 20:38:54,661 INFO L677 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 [2020-10-27 20:38:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-10-27 20:38:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 594. [2020-10-27 20:38:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-10-27 20:38:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 951 transitions. [2020-10-27 20:38:54,685 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 951 transitions. Word has length 113 [2020-10-27 20:38:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:54,685 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 951 transitions. [2020-10-27 20:38:54,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:38:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 951 transitions. [2020-10-27 20:38:54,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 20:38:54,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:54,687 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:38:54,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 20:38:54,687 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:54,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:54,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1878259975, now seen corresponding path program 1 times [2020-10-27 20:38:54,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:54,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236448506] [2020-10-27 20:38:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:54,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:54,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:54,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:59,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:59,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 20:38:59,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:38:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 20:38:59,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:38:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 20:38:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:38:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:59,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:59,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:59,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:59,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:59,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:38:59,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:59,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:38:59,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236448506] [2020-10-27 20:38:59,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:59,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:59,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749961618] [2020-10-27 20:38:59,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:59,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:59,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:59,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:59,839 INFO L87 Difference]: Start difference. First operand 594 states and 951 transitions. Second operand 5 states. [2020-10-27 20:39:00,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:00,899 INFO L93 Difference]: Finished difference Result 1296 states and 2054 transitions. [2020-10-27 20:39:00,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:39:00,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-27 20:39:00,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:00,904 INFO L225 Difference]: With dead ends: 1296 [2020-10-27 20:39:00,904 INFO L226 Difference]: Without dead ends: 715 [2020-10-27 20:39:00,905 INFO L677 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 [2020-10-27 20:39:00,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-10-27 20:39:00,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 596. [2020-10-27 20:39:00,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-10-27 20:39:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 953 transitions. [2020-10-27 20:39:00,927 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 953 transitions. Word has length 114 [2020-10-27 20:39:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:00,928 INFO L481 AbstractCegarLoop]: Abstraction has 596 states and 953 transitions. [2020-10-27 20:39:00,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:39:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 953 transitions. [2020-10-27 20:39:00,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 20:39:00,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:00,930 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:00,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 20:39:00,930 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:00,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1904935981, now seen corresponding path program 1 times [2020-10-27 20:39:00,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:00,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786796170] [2020-10-27 20:39:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:01,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:05,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:05,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 20:39:05,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:39:05,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 20:39:05,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:39:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 20:39:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:39:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:06,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:39:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:06,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:06,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:39:06,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:39:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:39:06,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:39:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:39:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:39:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:39:06,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786796170] [2020-10-27 20:39:06,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:39:06,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:39:06,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975202033] [2020-10-27 20:39:06,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:39:06,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:39:06,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:39:06,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:39:06,084 INFO L87 Difference]: Start difference. First operand 596 states and 953 transitions. Second operand 5 states. [2020-10-27 20:39:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:07,245 INFO L93 Difference]: Finished difference Result 1356 states and 2152 transitions. [2020-10-27 20:39:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:39:07,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 20:39:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:07,249 INFO L225 Difference]: With dead ends: 1356 [2020-10-27 20:39:07,249 INFO L226 Difference]: Without dead ends: 773 [2020-10-27 20:39:07,250 INFO L677 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 [2020-10-27 20:39:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-27 20:39:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 646. [2020-10-27 20:39:07,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-27 20:39:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1039 transitions. [2020-10-27 20:39:07,273 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1039 transitions. Word has length 119 [2020-10-27 20:39:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:07,274 INFO L481 AbstractCegarLoop]: Abstraction has 646 states and 1039 transitions. [2020-10-27 20:39:07,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:39:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1039 transitions. [2020-10-27 20:39:07,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 20:39:07,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:07,276 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:07,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 20:39:07,277 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:07,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:07,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1920454699, now seen corresponding path program 1 times [2020-10-27 20:39:07,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:07,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925872646] [2020-10-27 20:39:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:07,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:07,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:07,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:12,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:12,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 20:39:12,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:39:12,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 20:39:12,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:39:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 20:39:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:39:12,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:39:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:12,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:12,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:12,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:39:12,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:39:12,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:39:12,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:39:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:39:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:39:12,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:39:12,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925872646] [2020-10-27 20:39:12,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:39:12,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:39:12,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087432033] [2020-10-27 20:39:12,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:39:12,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:39:12,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:39:12,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:39:12,443 INFO L87 Difference]: Start difference. First operand 646 states and 1039 transitions. Second operand 5 states. [2020-10-27 20:39:13,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:13,605 INFO L93 Difference]: Finished difference Result 1456 states and 2324 transitions. [2020-10-27 20:39:13,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:39:13,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 20:39:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:13,610 INFO L225 Difference]: With dead ends: 1456 [2020-10-27 20:39:13,610 INFO L226 Difference]: Without dead ends: 823 [2020-10-27 20:39:13,612 INFO L677 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 [2020-10-27 20:39:13,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-27 20:39:13,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 646. [2020-10-27 20:39:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-27 20:39:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1039 transitions. [2020-10-27 20:39:13,634 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1039 transitions. Word has length 119 [2020-10-27 20:39:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:13,634 INFO L481 AbstractCegarLoop]: Abstraction has 646 states and 1039 transitions. [2020-10-27 20:39:13,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:39:13,634 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1039 transitions. [2020-10-27 20:39:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 20:39:13,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:13,636 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:13,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 20:39:13,637 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:13,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:13,637 INFO L82 PathProgramCache]: Analyzing trace with hash 565733557, now seen corresponding path program 1 times [2020-10-27 20:39:13,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:13,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314680804] [2020-10-27 20:39:13,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:13,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:13,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:13,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:18,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:18,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 20:39:18,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:39:18,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:39:18,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:39:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 20:39:18,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 20:39:18,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:39:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:18,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:18,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:39:18,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:39:18,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:39:18,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:39:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:39:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:39:18,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:39:18,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314680804] [2020-10-27 20:39:18,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:39:18,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:39:18,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513495925] [2020-10-27 20:39:18,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:39:18,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:39:18,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:39:18,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:39:18,800 INFO L87 Difference]: Start difference. First operand 646 states and 1039 transitions. Second operand 5 states. [2020-10-27 20:39:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:19,852 INFO L93 Difference]: Finished difference Result 1450 states and 2316 transitions. [2020-10-27 20:39:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:39:19,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 20:39:19,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:19,857 INFO L225 Difference]: With dead ends: 1450 [2020-10-27 20:39:19,858 INFO L226 Difference]: Without dead ends: 817 [2020-10-27 20:39:19,859 INFO L677 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 [2020-10-27 20:39:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2020-10-27 20:39:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 648. [2020-10-27 20:39:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-27 20:39:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1041 transitions. [2020-10-27 20:39:19,877 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1041 transitions. Word has length 120 [2020-10-27 20:39:19,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:19,877 INFO L481 AbstractCegarLoop]: Abstraction has 648 states and 1041 transitions. [2020-10-27 20:39:19,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:39:19,878 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1041 transitions. [2020-10-27 20:39:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 20:39:19,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:19,880 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:19,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 20:39:19,880 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:19,880 INFO L82 PathProgramCache]: Analyzing trace with hash 84653299, now seen corresponding path program 1 times [2020-10-27 20:39:19,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:19,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754356413] [2020-10-27 20:39:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:19,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:19,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:20,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:24,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:24,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 20:39:24,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:39:24,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 20:39:24,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:24,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:39:24,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 20:39:24,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 20:39:24,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:39:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:25,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:25,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:39:25,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:39:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:39:25,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:39:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:39:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:39:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:39:25,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754356413] [2020-10-27 20:39:25,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:39:25,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:39:25,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064866385] [2020-10-27 20:39:25,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:39:25,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:39:25,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:39:25,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:39:25,057 INFO L87 Difference]: Start difference. First operand 648 states and 1041 transitions. Second operand 5 states. [2020-10-27 20:39:26,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:26,156 INFO L93 Difference]: Finished difference Result 1404 states and 2234 transitions. [2020-10-27 20:39:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:39:26,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 20:39:26,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:26,161 INFO L225 Difference]: With dead ends: 1404 [2020-10-27 20:39:26,161 INFO L226 Difference]: Without dead ends: 769 [2020-10-27 20:39:26,162 INFO L677 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 [2020-10-27 20:39:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-10-27 20:39:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 598. [2020-10-27 20:39:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-27 20:39:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 955 transitions. [2020-10-27 20:39:26,183 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 955 transitions. Word has length 120 [2020-10-27 20:39:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:26,183 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 955 transitions. [2020-10-27 20:39:26,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:39:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 955 transitions. [2020-10-27 20:39:26,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 20:39:26,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:26,186 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:26,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 20:39:26,186 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:26,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:26,186 INFO L82 PathProgramCache]: Analyzing trace with hash -708795881, now seen corresponding path program 1 times [2020-10-27 20:39:26,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:26,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927608944] [2020-10-27 20:39:26,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:26,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:26,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:31,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:31,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 20:39:31,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:39:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 20:39:31,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:39:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:39:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:39:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:31,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:39:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:31,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:31,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:39:31,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:39:31,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:39:31,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:31,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:39:31,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:39:31,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:39:31,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-27 20:39:31,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927608944] [2020-10-27 20:39:31,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:39:31,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:39:31,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962124683] [2020-10-27 20:39:31,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:39:31,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:39:31,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:39:31,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:39:31,329 INFO L87 Difference]: Start difference. First operand 598 states and 955 transitions. Second operand 5 states. [2020-10-27 20:39:32,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:32,286 INFO L93 Difference]: Finished difference Result 1246 states and 1971 transitions. [2020-10-27 20:39:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:39:32,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 20:39:32,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:32,291 INFO L225 Difference]: With dead ends: 1246 [2020-10-27 20:39:32,291 INFO L226 Difference]: Without dead ends: 661 [2020-10-27 20:39:32,292 INFO L677 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 [2020-10-27 20:39:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-27 20:39:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 598. [2020-10-27 20:39:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-27 20:39:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 953 transitions. [2020-10-27 20:39:32,308 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 953 transitions. Word has length 127 [2020-10-27 20:39:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:32,308 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 953 transitions. [2020-10-27 20:39:32,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:39:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 953 transitions. [2020-10-27 20:39:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 20:39:32,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:32,310 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:32,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 20:39:32,310 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:32,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:32,310 INFO L82 PathProgramCache]: Analyzing trace with hash -779401215, now seen corresponding path program 1 times [2020-10-27 20:39:32,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:32,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412880008] [2020-10-27 20:39:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:32,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:32,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:32,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:37,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:37,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 20:39:37,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:39:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 20:39:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:39:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 20:39:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:39:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:37,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:39:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:37,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:37,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:39:37,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:39:37,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:39:37,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:39:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:39:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:39:37,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 20:39:37,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412880008] [2020-10-27 20:39:37,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:39:37,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:39:37,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308066560] [2020-10-27 20:39:37,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:39:37,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:39:37,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:39:37,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:39:37,456 INFO L87 Difference]: Start difference. First operand 598 states and 953 transitions. Second operand 5 states. [2020-10-27 20:39:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:38,585 INFO L93 Difference]: Finished difference Result 1308 states and 2060 transitions. [2020-10-27 20:39:38,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:39:38,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 20:39:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:38,590 INFO L225 Difference]: With dead ends: 1308 [2020-10-27 20:39:38,591 INFO L226 Difference]: Without dead ends: 723 [2020-10-27 20:39:38,592 INFO L677 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 [2020-10-27 20:39:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-10-27 20:39:38,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 598. [2020-10-27 20:39:38,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-27 20:39:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 951 transitions. [2020-10-27 20:39:38,615 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 951 transitions. Word has length 127 [2020-10-27 20:39:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:38,615 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 951 transitions. [2020-10-27 20:39:38,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:39:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 951 transitions. [2020-10-27 20:39:38,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 20:39:38,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:38,618 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:38,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 20:39:38,618 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:38,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1703489579, now seen corresponding path program 1 times [2020-10-27 20:39:38,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:38,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813314126] [2020-10-27 20:39:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:38,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:40,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:40,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 20:39:40,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:39:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2133 [2020-10-27 20:39:40,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:39:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 20:39:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 20:39:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:40,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:39:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:40,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:40,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:40,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:39:40,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:39:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:39:40,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:39:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:39:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:39:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 20:39:40,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813314126] [2020-10-27 20:39:40,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:39:40,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:39:40,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740013529] [2020-10-27 20:39:40,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:39:40,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:39:40,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:39:40,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:39:40,874 INFO L87 Difference]: Start difference. First operand 598 states and 951 transitions. Second operand 4 states. [2020-10-27 20:39:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:41,402 INFO L93 Difference]: Finished difference Result 1203 states and 1923 transitions. [2020-10-27 20:39:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:39:41,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-27 20:39:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:41,407 INFO L225 Difference]: With dead ends: 1203 [2020-10-27 20:39:41,407 INFO L226 Difference]: Without dead ends: 899 [2020-10-27 20:39:41,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:39:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-10-27 20:39:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2020-10-27 20:39:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-10-27 20:39:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1434 transitions. [2020-10-27 20:39:41,441 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1434 transitions. Word has length 127 [2020-10-27 20:39:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:41,442 INFO L481 AbstractCegarLoop]: Abstraction has 899 states and 1434 transitions. [2020-10-27 20:39:41,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:39:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1434 transitions. [2020-10-27 20:39:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 20:39:41,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:41,444 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:41,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 20:39:41,445 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:41,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1193164491, now seen corresponding path program 1 times [2020-10-27 20:39:41,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:41,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070983593] [2020-10-27 20:39:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:41,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:42,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:42,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 20:39:42,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:39:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-10-27 20:39:42,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:39:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:39:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 20:39:42,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:42,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:39:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:42,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:42,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:42,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:39:42,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:39:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:39:42,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:39:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:39:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:39:42,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 20:39:42,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070983593] [2020-10-27 20:39:42,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:39:42,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:39:42,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640566945] [2020-10-27 20:39:42,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:39:42,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:39:42,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:39:42,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:39:42,569 INFO L87 Difference]: Start difference. First operand 899 states and 1434 transitions. Second operand 5 states. [2020-10-27 20:39:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:43,584 INFO L93 Difference]: Finished difference Result 1590 states and 2529 transitions. [2020-10-27 20:39:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:39:43,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-27 20:39:43,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:43,590 INFO L225 Difference]: With dead ends: 1590 [2020-10-27 20:39:43,590 INFO L226 Difference]: Without dead ends: 983 [2020-10-27 20:39:43,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:39:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-10-27 20:39:43,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 907. [2020-10-27 20:39:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-10-27 20:39:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1447 transitions. [2020-10-27 20:39:43,617 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1447 transitions. Word has length 129 [2020-10-27 20:39:43,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:43,617 INFO L481 AbstractCegarLoop]: Abstraction has 907 states and 1447 transitions. [2020-10-27 20:39:43,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:39:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1447 transitions. [2020-10-27 20:39:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 20:39:43,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:43,619 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:43,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 20:39:43,619 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:43,620 INFO L82 PathProgramCache]: Analyzing trace with hash -409860185, now seen corresponding path program 1 times [2020-10-27 20:39:43,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:43,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456945389] [2020-10-27 20:39:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:43,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:44,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:44,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 20:39:44,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:39:44,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 964 [2020-10-27 20:39:44,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:44,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:39:44,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:39:44,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:39:44,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:44,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:39:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:44,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:44,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:39:44,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:39:44,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:39:44,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:44,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:39:44,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:39:44,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:39:44,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 20:39:44,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456945389] [2020-10-27 20:39:44,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:39:44,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:39:44,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856316932] [2020-10-27 20:39:44,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:39:44,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:39:44,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:39:44,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:39:44,823 INFO L87 Difference]: Start difference. First operand 907 states and 1447 transitions. Second operand 5 states. [2020-10-27 20:39:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:45,868 INFO L93 Difference]: Finished difference Result 1587 states and 2525 transitions. [2020-10-27 20:39:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:39:45,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-27 20:39:45,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:45,875 INFO L225 Difference]: With dead ends: 1587 [2020-10-27 20:39:45,875 INFO L226 Difference]: Without dead ends: 980 [2020-10-27 20:39:45,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:39:45,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-10-27 20:39:45,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 908. [2020-10-27 20:39:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2020-10-27 20:39:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1448 transitions. [2020-10-27 20:39:45,913 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1448 transitions. Word has length 130 [2020-10-27 20:39:45,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:45,913 INFO L481 AbstractCegarLoop]: Abstraction has 908 states and 1448 transitions. [2020-10-27 20:39:45,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:39:45,913 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1448 transitions. [2020-10-27 20:39:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 20:39:45,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:45,916 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:45,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 20:39:45,916 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:45,916 INFO L82 PathProgramCache]: Analyzing trace with hash -775367759, now seen corresponding path program 1 times [2020-10-27 20:39:45,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:45,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66002846] [2020-10-27 20:39:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 20:39:46,002 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 20:39:46,002 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 20:39:46,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 20:39:46,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:39:46 BoogieIcfgContainer [2020-10-27 20:39:46,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:39:46,054 INFO L168 Benchmark]: Toolchain (without parser) took 220421.62 ms. Allocated memory was 151.0 MB in the beginning and 987.8 MB in the end (delta: 836.8 MB). Free memory was 123.9 MB in the beginning and 760.8 MB in the end (delta: -636.9 MB). Peak memory consumption was 200.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:39:46,055 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:39:46,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 989.38 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 127.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 35.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:39:46,055 INFO L168 Benchmark]: Boogie Preprocessor took 134.00 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 119.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:39:46,056 INFO L168 Benchmark]: RCFGBuilder took 1368.00 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 119.9 MB in the beginning and 166.4 MB in the end (delta: -46.5 MB). Peak memory consumption was 79.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:39:46,056 INFO L168 Benchmark]: TraceAbstraction took 217914.88 ms. Allocated memory was 205.5 MB in the beginning and 987.8 MB in the end (delta: 782.2 MB). Free memory was 165.9 MB in the beginning and 760.8 MB in the end (delta: -594.9 MB). Peak memory consumption was 187.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:39:46,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 989.38 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 127.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 35.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 134.00 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 119.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1368.00 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 119.9 MB in the beginning and 166.4 MB in the end (delta: -46.5 MB). Peak memory consumption was 79.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 217914.88 ms. Allocated memory was 205.5 MB in the beginning and 987.8 MB in the end (delta: 782.2 MB). Free memory was 165.9 MB in the beginning and 760.8 MB in the end (delta: -594.9 MB). Peak memory consumption was 187.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1332. Possible FailurePath: [L1041] static int init = 1; [L1042] static SSL_METHOD SSLv3_client_data ; [L1064] SSL *s ; [L1068] s = malloc (sizeof (SSL)) [L1069] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1070] s->ctx = malloc(sizeof(SSL_CTX)) [L1071] s->state = 12292 [L1072] s->version = __VERIFIER_nondet_int() [L1073] CALL ssl3_connect(s) [L1079] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1080] unsigned long tmp ; [L1081] unsigned long l ; [L1082] long num1 ; [L1083] void (*cb)() ; [L1084] int ret ; [L1085] int new_state ; [L1086] int state ; [L1087] int skip ; [L1088] int *tmp___0 ; [L1089] int tmp___1 = __VERIFIER_nondet_int(); [L1090] int tmp___2 = __VERIFIER_nondet_int(); [L1091] int tmp___3 ; [L1092] int tmp___4 ; [L1093] int tmp___5 ; [L1094] int tmp___6 ; [L1095] int tmp___7 ; [L1096] int tmp___8 ; [L1097] long tmp___9 ; [L1099] int blastFlag ; [L1102] blastFlag = 0 [L1103] s->state = 12292 [L1104] s->hit = __VERIFIER_nondet_int() [L1106] tmp = __VERIFIER_nondet_int() [L1107] cb = (void (*)())((void *)0) [L1108] ret = -1 [L1109] skip = 0 [L1110] tmp___0 = (int*)malloc(sizeof(int)) [L1111] *tmp___0 = 0 [L1112] EXPR s->info_callback [L1112] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1113] EXPR s->info_callback [L1113] cb = s->info_callback [L1121] EXPR s->in_handshake [L1121] s->in_handshake += 1 [L1122] COND FALSE !(tmp___1 & 12288) [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND TRUE s->state == 12292 [L1238] s->new_session = 1 [L1239] s->state = 4096 [L1240] EXPR s->ctx [L1240] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1240] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1245] s->server = 0 [L1246] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) [L1251] EXPR s->version [L1251] COND FALSE !((s->version & 65280) != 768) [L1257] s->type = 4096 [L1258] EXPR s->init_buf [L1258] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1270] tmp___4 = __VERIFIER_nondet_int() [L1271] COND FALSE !(! tmp___4) [L1277] tmp___5 = __VERIFIER_nondet_int() [L1278] COND FALSE !(! tmp___5) [L1284] s->state = 4368 [L1285] EXPR s->ctx [L1285] EXPR (s->ctx)->stats.sess_connect [L1285] (s->ctx)->stats.sess_connect += 1 [L1286] s->init_num = 0 [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND TRUE s->state == 4368 [L1290] s->shutdown = 0 [L1291] ret = __VERIFIER_nondet_int() [L1292] COND TRUE blastFlag == 0 [L1293] blastFlag = 1 [L1297] COND FALSE !(ret <= 0) [L1302] s->state = 4384 [L1303] s->init_num = 0 [L1304] EXPR s->bbio [L1304] EXPR s->wbio [L1304] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state [L1156] COND TRUE s->state == 4384 [L1312] ret = __VERIFIER_nondet_int() [L1313] COND TRUE blastFlag == 1 [L1314] blastFlag = 2 [L1318] COND FALSE !(ret <= 0) [L1323] s->hit [L1323] COND FALSE !(s->hit) [L1326] s->state = 4400 [L1328] s->init_num = 0 [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state [L1162] COND TRUE s->state == 4400 [L1332] EXPR s->s3 [L1332] EXPR (s->s3)->tmp.new_cipher [L1332] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1332] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1335] ret = __VERIFIER_nondet_int() [L1336] COND TRUE blastFlag == 2 [L1337] blastFlag = 3 [L1341] COND FALSE !(ret <= 0) [L1347] s->state = 4416 [L1348] s->init_num = 0 [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state [L1168] COND TRUE s->state == 4416 [L1352] ret = __VERIFIER_nondet_int() [L1353] COND TRUE blastFlag == 3 [L1354] blastFlag = 4 [L1358] COND FALSE !(ret <= 0) [L1363] s->state = 4432 [L1364] s->init_num = 0 [L1365] tmp___6 = __VERIFIER_nondet_int() [L1366] COND FALSE !(! tmp___6) [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state [L1168] COND FALSE !(s->state == 4416) [L1171] EXPR s->state [L1171] COND FALSE !(s->state == 4417) [L1174] EXPR s->state [L1174] COND TRUE s->state == 4432 [L1375] ret = __VERIFIER_nondet_int() [L1376] COND FALSE !(blastFlag == 5) [L1381] COND FALSE !(ret <= 0) [L1386] s->state = 4448 [L1387] s->init_num = 0 [L1606] EXPR s->s3 [L1606] EXPR (s->s3)->tmp.reuse_message [L1606] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1635] skip = 0 [L1132] COND TRUE 1 [L1134] EXPR s->state [L1134] state = s->state [L1135] EXPR s->state [L1135] COND FALSE !(s->state == 12292) [L1138] EXPR s->state [L1138] COND FALSE !(s->state == 16384) [L1141] EXPR s->state [L1141] COND FALSE !(s->state == 4096) [L1144] EXPR s->state [L1144] COND FALSE !(s->state == 20480) [L1147] EXPR s->state [L1147] COND FALSE !(s->state == 4099) [L1150] EXPR s->state [L1150] COND FALSE !(s->state == 4368) [L1153] EXPR s->state [L1153] COND FALSE !(s->state == 4369) [L1156] EXPR s->state [L1156] COND FALSE !(s->state == 4384) [L1159] EXPR s->state [L1159] COND FALSE !(s->state == 4385) [L1162] EXPR s->state [L1162] COND FALSE !(s->state == 4400) [L1165] EXPR s->state [L1165] COND FALSE !(s->state == 4401) [L1168] EXPR s->state [L1168] COND FALSE !(s->state == 4416) [L1171] EXPR s->state [L1171] COND FALSE !(s->state == 4417) [L1174] EXPR s->state [L1174] COND FALSE !(s->state == 4432) [L1177] EXPR s->state [L1177] COND FALSE !(s->state == 4433) [L1180] EXPR s->state [L1180] COND TRUE s->state == 4448 [L1391] ret = __VERIFIER_nondet_int() [L1392] COND TRUE blastFlag == 4 [L1647] CALL reach_error() [L3] __assert_fail("0", "s3.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 172 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 217.7s, OverallIterations: 39, TraceHistogramMax: 7, AutomataDifference: 39.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8485 SDtfs, 3232 SDslu, 11558 SDs, 0 SdLazy, 18433 SolverSat, 416 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 289 GetRequests, 115 SyntacticMatches, 26 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=908occurred in iteration=38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 38 MinimizatonAttempts, 3856 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 175.0s InterpolantComputationTime, 3818 NumberOfCodeBlocks, 3818 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3636 ConstructedInterpolants, 0 QuantifiedInterpolants, 1653480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 3294/3294 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...