/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/eca-rers2012/Problem15_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:11:03,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:11:03,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:11:04,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:11:04,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:11:04,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:11:04,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:11:04,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:11:04,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:11:04,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:11:04,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:11:04,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:11:04,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:11:04,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:11:04,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:11:04,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:11:04,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:11:04,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:11:04,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:11:04,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:11:04,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:11:04,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:11:04,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:11:04,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:11:04,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:11:04,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:11:04,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:11:04,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:11:04,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:11:04,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:11:04,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:11:04,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:11:04,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:11:04,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:11:04,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:11:04,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:11:04,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:11:04,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:11:04,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:11:04,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:11:04,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:11:04,108 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 [2020-10-28 13:11:04,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:11:04,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:11:04,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:11:04,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:11:04,141 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:11:04,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:11:04,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:11:04,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:11:04,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:11:04,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:11:04,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:11:04,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:11:04,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:11:04,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:11:04,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:11:04,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:11:04,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:11:04,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:11:04,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:11:04,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:11:04,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:11:04,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:11:04,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:11:04,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:11:04,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:11:04,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:11:04,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:11:04,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:11:04,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:11:04,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:11:04,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:11:04,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:11:04,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:11:04,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:11:04,687 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:11:04,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label47.c [2020-10-28 13:11:04,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4b9132a/c773b1d6cc2e468baea67b2304fd2440/FLAG08067acfa [2020-10-28 13:11:05,721 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:11:05,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label47.c [2020-10-28 13:11:05,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4b9132a/c773b1d6cc2e468baea67b2304fd2440/FLAG08067acfa [2020-10-28 13:11:05,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4b9132a/c773b1d6cc2e468baea67b2304fd2440 [2020-10-28 13:11:05,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:11:05,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:11:05,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:11:05,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:11:05,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:11:05,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:11:05" (1/1) ... [2020-10-28 13:11:05,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679cc848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:05, skipping insertion in model container [2020-10-28 13:11:05,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:11:05" (1/1) ... [2020-10-28 13:11:05,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:11:06,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:11:06,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:11:06,904 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:11:07,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:11:07,253 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:11:07,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:07 WrapperNode [2020-10-28 13:11:07,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:11:07,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:11:07,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:11:07,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:11:07,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:07" (1/1) ... [2020-10-28 13:11:07,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:07" (1/1) ... [2020-10-28 13:11:07,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:07" (1/1) ... [2020-10-28 13:11:07,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:07" (1/1) ... [2020-10-28 13:11:07,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:07" (1/1) ... [2020-10-28 13:11:07,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:07" (1/1) ... [2020-10-28 13:11:07,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:07" (1/1) ... [2020-10-28 13:11:07,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:11:07,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:11:07,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:11:07,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:11:07,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:07" (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 [2020-10-28 13:11:07,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:11:07,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:11:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:11:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:11:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:11:07,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:11:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:11:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:11:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:11:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:11:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:11:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:11:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:11:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:11:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:11:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:11:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:11:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:11:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:11:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:11:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:11:11,102 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:11:11,102 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:11:11,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:11:11 BoogieIcfgContainer [2020-10-28 13:11:11,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:11:11,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:11:11,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:11:11,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:11:11,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:11:05" (1/3) ... [2020-10-28 13:11:11,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f34967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:11:11, skipping insertion in model container [2020-10-28 13:11:11,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:07" (2/3) ... [2020-10-28 13:11:11,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f34967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:11:11, skipping insertion in model container [2020-10-28 13:11:11,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:11:11" (3/3) ... [2020-10-28 13:11:11,115 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label47.c [2020-10-28 13:11:11,128 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:11:11,134 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:11:11,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:11:11,183 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:11:11,183 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:11:11,183 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:11:11,183 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:11:11,184 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:11:11,184 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:11:11,184 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:11:11,184 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:11:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:11:11,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 13:11:11,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:11,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:11,229 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:11,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:11,239 INFO L82 PathProgramCache]: Analyzing trace with hash 420129841, now seen corresponding path program 1 times [2020-10-28 13:11:11,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:11,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641267874] [2020-10-28 13:11:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:11,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:11,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:11,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 13:11:11,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:11,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-28 13:11:11,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:12,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:11:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 13:11:12,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:11:12,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:12,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:12,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:12,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:12,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:12,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:11:12,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:12,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:12,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:11:12,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641267874] [2020-10-28 13:11:12,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:12,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:11:12,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006507926] [2020-10-28 13:11:12,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:11:12,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:11:12,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:11:12,227 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:11:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:18,626 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-28 13:11:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:11:18,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-28 13:11:18,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:18,672 INFO L225 Difference]: With dead ends: 1204 [2020-10-28 13:11:18,673 INFO L226 Difference]: Without dead ends: 698 [2020-10-28 13:11:18,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:11:18,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-28 13:11:18,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-28 13:11:18,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-28 13:11:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-28 13:11:18,883 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 16 [2020-10-28 13:11:18,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:18,884 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-28 13:11:18,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:11:18,884 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-28 13:11:18,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 13:11:18,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:18,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:18,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:11:18,891 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:18,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:18,896 INFO L82 PathProgramCache]: Analyzing trace with hash 2007445478, now seen corresponding path program 1 times [2020-10-28 13:11:18,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:18,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139988790] [2020-10-28 13:11:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:20,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:20,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 13:11:20,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:11:20,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-10-28 13:11:20,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:20,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:11:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:11:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:11:21,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:21,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:21,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:21,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:11:21,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:21,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:21,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:21,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:11:21,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:21,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 13:11:21,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:21,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:21,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:11:21,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:11:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:11:21,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:11:21,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139988790] [2020-10-28 13:11:21,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:21,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:11:21,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501883626] [2020-10-28 13:11:21,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:11:21,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:21,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:11:21,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:11:21,434 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-28 13:11:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:31,223 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-28 13:11:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:11:31,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-10-28 13:11:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:31,240 INFO L225 Difference]: With dead ends: 1712 [2020-10-28 13:11:31,240 INFO L226 Difference]: Without dead ends: 1026 [2020-10-28 13:11:31,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:11:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-28 13:11:31,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-28 13:11:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-28 13:11:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-28 13:11:31,310 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 85 [2020-10-28 13:11:31,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:31,311 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-28 13:11:31,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:11:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-28 13:11:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 13:11:31,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:31,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:31,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:11:31,318 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:31,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:31,319 INFO L82 PathProgramCache]: Analyzing trace with hash 615420642, now seen corresponding path program 1 times [2020-10-28 13:11:31,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:31,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50944441] [2020-10-28 13:11:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:31,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:32,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:32,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 13:11:32,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:11:32,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-28 13:11:32,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:32,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:11:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:11:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:32,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:32,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:32,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:32,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:11:32,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:32,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:32,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:32,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:32,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:11:32,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:32,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 13:11:32,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:32,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:11:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:11:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:11:32,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:11:32,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50944441] [2020-10-28 13:11:32,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:32,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:11:32,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371100690] [2020-10-28 13:11:32,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:11:32,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:32,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:11:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:11:32,867 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-28 13:11:43,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:43,877 INFO L93 Difference]: Finished difference Result 2381 states and 3377 transitions. [2020-10-28 13:11:43,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:11:43,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-28 13:11:43,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:43,892 INFO L225 Difference]: With dead ends: 2381 [2020-10-28 13:11:43,893 INFO L226 Difference]: Without dead ends: 1679 [2020-10-28 13:11:43,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:11:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2020-10-28 13:11:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1333. [2020-10-28 13:11:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-10-28 13:11:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1724 transitions. [2020-10-28 13:11:43,959 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1724 transitions. Word has length 90 [2020-10-28 13:11:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:43,963 INFO L481 AbstractCegarLoop]: Abstraction has 1333 states and 1724 transitions. [2020-10-28 13:11:43,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:11:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1724 transitions. [2020-10-28 13:11:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-28 13:11:43,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:43,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:43,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:11:43,978 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:43,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:43,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1317809208, now seen corresponding path program 1 times [2020-10-28 13:11:43,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:43,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655611481] [2020-10-28 13:11:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:44,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:47,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:49,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 13:11:49,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:11:49,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 13:11:49,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:49,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:11:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:11:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:49,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:49,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:49,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:49,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:49,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:11:49,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:49,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:11:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:11:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:49,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:49,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:49,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:49,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:11:49,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:49,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 13:11:49,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:49,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:49,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:11:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:11:49,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:11:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:49,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:49,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:49,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:49,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:11:49,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:11:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-28 13:11:49,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:49,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:11:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:11:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:11:49,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 82 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:11:50,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655611481] [2020-10-28 13:11:50,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:11:50,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:11:50,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634439927] [2020-10-28 13:11:50,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:11:50,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:50,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:11:50,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:11:50,019 INFO L87 Difference]: Start difference. First operand 1333 states and 1724 transitions. Second operand 7 states. [2020-10-28 13:12:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:03,373 INFO L93 Difference]: Finished difference Result 3696 states and 4891 transitions. [2020-10-28 13:12:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:12:03,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-10-28 13:12:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:03,391 INFO L225 Difference]: With dead ends: 3696 [2020-10-28 13:12:03,391 INFO L226 Difference]: Without dead ends: 2369 [2020-10-28 13:12:03,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:12:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2020-10-28 13:12:03,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1997. [2020-10-28 13:12:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1997 states. [2020-10-28 13:12:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2478 transitions. [2020-10-28 13:12:03,467 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2478 transitions. Word has length 190 [2020-10-28 13:12:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:03,468 INFO L481 AbstractCegarLoop]: Abstraction has 1997 states and 2478 transitions. [2020-10-28 13:12:03,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2478 transitions. [2020-10-28 13:12:03,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-28 13:12:03,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:03,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:03,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:12:03,473 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:03,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:03,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1917426571, now seen corresponding path program 1 times [2020-10-28 13:12:03,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:03,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533189440] [2020-10-28 13:12:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:08,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:08,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:12:08,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:12:08,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 13:12:08,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:08,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:12:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:12:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:08,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:08,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:08,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:08,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:08,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:08,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:12:08,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:08,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:08,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:12:08,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:08,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:08,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:08,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:12:08,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:12:08,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:08,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:12:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:08,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:12:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:09,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:12:09,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-28 13:12:09,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:09,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:12:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:12:09,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533189440] [2020-10-28 13:12:09,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:09,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:09,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712295166] [2020-10-28 13:12:09,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:09,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:09,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:09,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:09,467 INFO L87 Difference]: Start difference. First operand 1997 states and 2478 transitions. Second operand 7 states. [2020-10-28 13:12:09,620 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:12:21,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:21,443 INFO L93 Difference]: Finished difference Result 5622 states and 7176 transitions. [2020-10-28 13:12:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:12:21,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-10-28 13:12:21,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:21,467 INFO L225 Difference]: With dead ends: 5622 [2020-10-28 13:12:21,467 INFO L226 Difference]: Without dead ends: 2972 [2020-10-28 13:12:21,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:12:21,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-10-28 13:12:21,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2613. [2020-10-28 13:12:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-28 13:12:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 2982 transitions. [2020-10-28 13:12:21,588 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 2982 transitions. Word has length 234 [2020-10-28 13:12:21,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:21,589 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 2982 transitions. [2020-10-28 13:12:21,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:21,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 2982 transitions. [2020-10-28 13:12:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-28 13:12:21,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:21,595 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:21,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:12:21,595 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:21,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1300044951, now seen corresponding path program 1 times [2020-10-28 13:12:21,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:21,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386225181] [2020-10-28 13:12:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:21,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:21,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:26,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:26,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-28 13:12:26,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:12:26,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:12:26,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:26,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:12:26,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:12:26,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:26,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:26,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:26,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:26,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:12:26,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:26,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:12:26,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:27,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:27,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:12:27,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:27,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-28 13:12:27,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:27,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:12:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:12:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:27,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:27,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:12:27,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:12:27,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:27,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:12:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:12:28,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386225181] [2020-10-28 13:12:28,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:28,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:28,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358562757] [2020-10-28 13:12:28,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:28,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:28,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:28,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:28,262 INFO L87 Difference]: Start difference. First operand 2613 states and 2982 transitions. Second operand 7 states. [2020-10-28 13:12:37,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:37,162 INFO L93 Difference]: Finished difference Result 5568 states and 6331 transitions. [2020-10-28 13:12:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:12:37,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-28 13:12:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:37,181 INFO L225 Difference]: With dead ends: 5568 [2020-10-28 13:12:37,182 INFO L226 Difference]: Without dead ends: 2961 [2020-10-28 13:12:37,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:12:37,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-10-28 13:12:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2924. [2020-10-28 13:12:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2924 states. [2020-10-28 13:12:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3299 transitions. [2020-10-28 13:12:37,292 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3299 transitions. Word has length 301 [2020-10-28 13:12:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:37,293 INFO L481 AbstractCegarLoop]: Abstraction has 2924 states and 3299 transitions. [2020-10-28 13:12:37,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3299 transitions. [2020-10-28 13:12:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-28 13:12:37,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:37,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:37,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:12:37,301 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:37,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:37,301 INFO L82 PathProgramCache]: Analyzing trace with hash -462711502, now seen corresponding path program 1 times [2020-10-28 13:12:37,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:37,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512218456] [2020-10-28 13:12:37,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:39,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:39,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-28 13:12:39,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:12:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1843 [2020-10-28 13:12:39,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:39,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:12:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:12:39,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:39,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:39,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:39,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:39,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:39,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:12:39,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:39,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:39,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:12:39,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:39,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:39,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:12:39,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-28 13:12:39,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:39,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:12:39,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:40,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:12:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:40,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:40,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:40,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:12:40,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:40,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 13:12:40,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:40,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:12:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:12:40,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512218456] [2020-10-28 13:12:40,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:40,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:40,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800782542] [2020-10-28 13:12:40,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:40,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:40,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:40,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:40,450 INFO L87 Difference]: Start difference. First operand 2924 states and 3299 transitions. Second operand 7 states. [2020-10-28 13:12:44,125 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:12:52,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:52,299 INFO L93 Difference]: Finished difference Result 6884 states and 8033 transitions. [2020-10-28 13:12:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:12:52,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-28 13:12:52,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:52,319 INFO L225 Difference]: With dead ends: 6884 [2020-10-28 13:12:52,320 INFO L226 Difference]: Without dead ends: 4273 [2020-10-28 13:12:52,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:12:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2020-10-28 13:12:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 4231. [2020-10-28 13:12:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4231 states. [2020-10-28 13:12:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4231 states to 4231 states and 4731 transitions. [2020-10-28 13:12:52,452 INFO L78 Accepts]: Start accepts. Automaton has 4231 states and 4731 transitions. Word has length 375 [2020-10-28 13:12:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:52,453 INFO L481 AbstractCegarLoop]: Abstraction has 4231 states and 4731 transitions. [2020-10-28 13:12:52,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4231 states and 4731 transitions. [2020-10-28 13:12:52,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-28 13:12:52,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:52,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:52,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:12:52,462 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:52,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2112749392, now seen corresponding path program 1 times [2020-10-28 13:12:52,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:52,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583781470] [2020-10-28 13:12:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:52,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:55,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:55,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-28 13:12:55,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:12:55,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3209 [2020-10-28 13:12:55,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:55,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:55,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:55,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:12:55,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:12:55,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:55,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:55,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:55,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:55,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:12:55,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:55,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:55,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:56,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:56,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:56,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:12:56,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:56,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-28 13:12:56,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:56,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:56,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:56,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:56,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:12:56,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:12:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:56,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:56,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:12:56,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:56,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 13:12:56,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:56,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:12:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:12:57,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583781470] [2020-10-28 13:12:57,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:57,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:12:57,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156687927] [2020-10-28 13:12:57,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:12:57,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:57,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:12:57,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:12:57,595 INFO L87 Difference]: Start difference. First operand 4231 states and 4731 transitions. Second operand 8 states. [2020-10-28 13:13:01,530 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 13:13:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:13,725 INFO L93 Difference]: Finished difference Result 10108 states and 11522 transitions. [2020-10-28 13:13:13,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:13:13,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 401 [2020-10-28 13:13:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:13,756 INFO L225 Difference]: With dead ends: 10108 [2020-10-28 13:13:13,757 INFO L226 Difference]: Without dead ends: 6190 [2020-10-28 13:13:13,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:13:13,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6190 states. [2020-10-28 13:13:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6190 to 5830. [2020-10-28 13:13:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5830 states. [2020-10-28 13:13:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5830 states to 5830 states and 6470 transitions. [2020-10-28 13:13:13,926 INFO L78 Accepts]: Start accepts. Automaton has 5830 states and 6470 transitions. Word has length 401 [2020-10-28 13:13:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:13,927 INFO L481 AbstractCegarLoop]: Abstraction has 5830 states and 6470 transitions. [2020-10-28 13:13:13,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:13:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5830 states and 6470 transitions. [2020-10-28 13:13:13,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-28 13:13:13,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:13,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:13,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:13:13,938 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:13,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:13,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2031100376, now seen corresponding path program 1 times [2020-10-28 13:13:13,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:13,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830202183] [2020-10-28 13:13:13,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:14,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:14,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:14,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-28 13:13:14,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:14,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-10-28 13:13:14,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:14,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:13:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 13:13:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:15,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:15,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:15,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:15,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:15,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:13:15,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:15,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:15,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:15,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:13:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:13:15,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:15,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:13:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:15,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:15,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:13:15,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:15,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:13:15,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:15,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:13:15,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:13:15,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830202183] [2020-10-28 13:13:15,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:15,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:13:15,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778269027] [2020-10-28 13:13:15,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:13:15,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:15,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:13:15,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:13:15,627 INFO L87 Difference]: Start difference. First operand 5830 states and 6470 transitions. Second operand 5 states. [2020-10-28 13:13:22,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:22,731 INFO L93 Difference]: Finished difference Result 13657 states and 15478 transitions. [2020-10-28 13:13:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:13:22,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 413 [2020-10-28 13:13:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:22,784 INFO L225 Difference]: With dead ends: 13657 [2020-10-28 13:13:22,784 INFO L226 Difference]: Without dead ends: 8140 [2020-10-28 13:13:22,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:13:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8140 states. [2020-10-28 13:13:22,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8140 to 8123. [2020-10-28 13:13:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8123 states. [2020-10-28 13:13:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8123 states to 8123 states and 9230 transitions. [2020-10-28 13:13:22,984 INFO L78 Accepts]: Start accepts. Automaton has 8123 states and 9230 transitions. Word has length 413 [2020-10-28 13:13:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:22,985 INFO L481 AbstractCegarLoop]: Abstraction has 8123 states and 9230 transitions. [2020-10-28 13:13:22,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:13:22,985 INFO L276 IsEmpty]: Start isEmpty. Operand 8123 states and 9230 transitions. [2020-10-28 13:13:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-28 13:13:22,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:22,996 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:22,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:13:22,997 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:22,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:22,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1852889299, now seen corresponding path program 1 times [2020-10-28 13:13:22,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:22,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108781809] [2020-10-28 13:13:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:23,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:28,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:28,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:28,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-28 13:13:28,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:13:28,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-28 13:13:28,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:28,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:13:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:13:28,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:28,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:28,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:28,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:28,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:28,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:13:28,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:28,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:28,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:28,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:28,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:28,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:13:28,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:28,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 13:13:28,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:28,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:28,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:13:28,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:29,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:13:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:29,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:29,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:13:29,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 13:13:29,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:29,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:13:29,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:13:29,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108781809] [2020-10-28 13:13:29,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:29,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:13:29,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226678162] [2020-10-28 13:13:29,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:13:29,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:29,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:13:29,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:13:29,713 INFO L87 Difference]: Start difference. First operand 8123 states and 9230 transitions. Second operand 8 states. [2020-10-28 13:13:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:43,813 INFO L93 Difference]: Finished difference Result 18486 states and 21328 transitions. [2020-10-28 13:13:43,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:13:43,815 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 453 [2020-10-28 13:13:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:43,847 INFO L225 Difference]: With dead ends: 18486 [2020-10-28 13:13:43,848 INFO L226 Difference]: Without dead ends: 10048 [2020-10-28 13:13:43,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:13:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10048 states. [2020-10-28 13:13:44,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10048 to 9988. [2020-10-28 13:13:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9988 states. [2020-10-28 13:13:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9988 states to 9988 states and 11262 transitions. [2020-10-28 13:13:44,123 INFO L78 Accepts]: Start accepts. Automaton has 9988 states and 11262 transitions. Word has length 453 [2020-10-28 13:13:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:44,124 INFO L481 AbstractCegarLoop]: Abstraction has 9988 states and 11262 transitions. [2020-10-28 13:13:44,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:13:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9988 states and 11262 transitions. [2020-10-28 13:13:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-28 13:13:44,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:44,131 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:44,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:13:44,131 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:44,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1730520331, now seen corresponding path program 1 times [2020-10-28 13:13:44,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:44,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924213768] [2020-10-28 13:13:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:44,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:48,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:48,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-28 13:13:48,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:13:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4153 [2020-10-28 13:13:48,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:48,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:13:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:13:48,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:48,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:48,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:48,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:48,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:13:48,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:48,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:48,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:48,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:48,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:13:48,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:48,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:13:48,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:48,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:48,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:13:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:48,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:49,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:49,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:13:49,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:13:49,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:49,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:13:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:49,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:13:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:49,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:49,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:13:49,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:49,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:13:49,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:49,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:49,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:49,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:49,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:13:49,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:13:49,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924213768] [2020-10-28 13:13:49,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:49,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:13:49,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140389207] [2020-10-28 13:13:49,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:13:49,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:49,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:13:49,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:13:49,387 INFO L87 Difference]: Start difference. First operand 9988 states and 11262 transitions. Second operand 7 states. [2020-10-28 13:13:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:57,306 INFO L93 Difference]: Finished difference Result 22511 states and 26018 transitions. [2020-10-28 13:13:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:13:57,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 489 [2020-10-28 13:13:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:57,354 INFO L225 Difference]: With dead ends: 22511 [2020-10-28 13:13:57,354 INFO L226 Difference]: Without dead ends: 12836 [2020-10-28 13:13:57,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:13:57,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12836 states. [2020-10-28 13:13:57,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12836 to 11552. [2020-10-28 13:13:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11552 states. [2020-10-28 13:13:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11552 states to 11552 states and 13289 transitions. [2020-10-28 13:13:57,673 INFO L78 Accepts]: Start accepts. Automaton has 11552 states and 13289 transitions. Word has length 489 [2020-10-28 13:13:57,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:57,674 INFO L481 AbstractCegarLoop]: Abstraction has 11552 states and 13289 transitions. [2020-10-28 13:13:57,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:13:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 11552 states and 13289 transitions. [2020-10-28 13:13:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-28 13:13:57,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:57,682 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:57,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:13:57,683 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:57,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:57,684 INFO L82 PathProgramCache]: Analyzing trace with hash 878195409, now seen corresponding path program 1 times [2020-10-28 13:13:57,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:57,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865897414] [2020-10-28 13:13:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:58,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:00,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:00,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:00,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 522 [2020-10-28 13:14:00,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:14:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2478 [2020-10-28 13:14:00,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:00,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:14:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:14:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 13:14:00,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:00,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:00,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:00,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:00,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:00,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:14:00,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:00,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:00,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:00,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:00,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:00,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:00,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:00,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:14:00,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:00,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:00,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:00,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:00,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:00,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:00,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:00,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:00,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:14:00,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:00,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:14:00,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:00,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:14:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:00,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:00,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:01,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 13:14:01,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:14:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 13:14:01,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:01,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:14:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 198 proven. 9 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:14:01,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865897414] [2020-10-28 13:14:01,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:01,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:14:01,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44948271] [2020-10-28 13:14:01,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:01,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:01,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:01,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:01,254 INFO L87 Difference]: Start difference. First operand 11552 states and 13289 transitions. Second operand 7 states. [2020-10-28 13:14:12,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:12,070 INFO L93 Difference]: Finished difference Result 27509 states and 32179 transitions. [2020-10-28 13:14:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:14:12,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-28 13:14:12,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:12,150 INFO L225 Difference]: With dead ends: 27509 [2020-10-28 13:14:12,150 INFO L226 Difference]: Without dead ends: 15640 [2020-10-28 13:14:12,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:14:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15640 states. [2020-10-28 13:14:12,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15640 to 14665. [2020-10-28 13:14:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14665 states. [2020-10-28 13:14:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14665 states to 14665 states and 16638 transitions. [2020-10-28 13:14:12,538 INFO L78 Accepts]: Start accepts. Automaton has 14665 states and 16638 transitions. Word has length 506 [2020-10-28 13:14:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:12,540 INFO L481 AbstractCegarLoop]: Abstraction has 14665 states and 16638 transitions. [2020-10-28 13:14:12,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:12,540 INFO L276 IsEmpty]: Start isEmpty. Operand 14665 states and 16638 transitions. [2020-10-28 13:14:12,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2020-10-28 13:14:12,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:12,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:12,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:14:12,546 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:12,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:12,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1116801682, now seen corresponding path program 1 times [2020-10-28 13:14:12,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:12,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960306877] [2020-10-28 13:14:12,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:12,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:13,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:13,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-28 13:14:13,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-28 13:14:13,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:13,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:14:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 13:14:13,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:14,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:14,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:14,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:14,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:14,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:14:14,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:14,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:14,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:14,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:14,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:14,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:14,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:14,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:14:14,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:14,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:14,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:14,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:14,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:14,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:14,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:14,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:14,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:14,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:14,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:14:14,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:14,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:14,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:14:14,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:14,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:14:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:14,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:14,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:14:14,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:14,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 13:14:14,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:14,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 13:14:14,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:14:14,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960306877] [2020-10-28 13:14:14,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:14,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:14:14,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307245225] [2020-10-28 13:14:14,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:14,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:14,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:14,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:14,939 INFO L87 Difference]: Start difference. First operand 14665 states and 16638 transitions. Second operand 7 states. [2020-10-28 13:14:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:27,059 INFO L93 Difference]: Finished difference Result 33410 states and 38959 transitions. [2020-10-28 13:14:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:14:27,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 519 [2020-10-28 13:14:27,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:27,112 INFO L225 Difference]: With dead ends: 33410 [2020-10-28 13:14:27,113 INFO L226 Difference]: Without dead ends: 18745 [2020-10-28 13:14:27,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:14:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18745 states. [2020-10-28 13:14:27,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18745 to 18711. [2020-10-28 13:14:27,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18711 states. [2020-10-28 13:14:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18711 states to 18711 states and 21088 transitions. [2020-10-28 13:14:27,567 INFO L78 Accepts]: Start accepts. Automaton has 18711 states and 21088 transitions. Word has length 519 [2020-10-28 13:14:27,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:27,569 INFO L481 AbstractCegarLoop]: Abstraction has 18711 states and 21088 transitions. [2020-10-28 13:14:27,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:27,569 INFO L276 IsEmpty]: Start isEmpty. Operand 18711 states and 21088 transitions. [2020-10-28 13:14:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-28 13:14:27,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:27,577 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:27,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:14:27,578 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:27,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1207991892, now seen corresponding path program 1 times [2020-10-28 13:14:27,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:27,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433167833] [2020-10-28 13:14:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:27,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:32,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:32,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-28 13:14:32,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:14:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4897 [2020-10-28 13:14:32,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:32,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 560 [2020-10-28 13:14:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 13:14:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:32,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:32,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:32,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:32,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:32,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:32,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:14:32,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:32,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:32,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:32,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:32,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:32,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:32,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:32,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:14:32,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:32,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:32,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:33,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:33,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:33,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:33,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:33,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:14:33,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:33,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:14:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:33,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:33,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 13:14:33,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:33,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:14:33,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:33,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 13:14:33,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2020-10-28 13:14:33,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433167833] [2020-10-28 13:14:33,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:33,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:14:33,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223187374] [2020-10-28 13:14:33,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:14:33,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:33,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:14:33,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:14:33,454 INFO L87 Difference]: Start difference. First operand 18711 states and 21088 transitions. Second operand 5 states. [2020-10-28 13:14:35,373 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:14:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:41,434 INFO L93 Difference]: Finished difference Result 45826 states and 52716 transitions. [2020-10-28 13:14:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:14:41,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 562 [2020-10-28 13:14:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:41,519 INFO L225 Difference]: With dead ends: 45826 [2020-10-28 13:14:41,520 INFO L226 Difference]: Without dead ends: 27117 [2020-10-28 13:14:41,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:14:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27117 states. [2020-10-28 13:14:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27117 to 26458. [2020-10-28 13:14:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26458 states. [2020-10-28 13:14:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26458 states to 26458 states and 30353 transitions. [2020-10-28 13:14:42,166 INFO L78 Accepts]: Start accepts. Automaton has 26458 states and 30353 transitions. Word has length 562 [2020-10-28 13:14:42,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:42,168 INFO L481 AbstractCegarLoop]: Abstraction has 26458 states and 30353 transitions. [2020-10-28 13:14:42,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:14:42,168 INFO L276 IsEmpty]: Start isEmpty. Operand 26458 states and 30353 transitions. [2020-10-28 13:14:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2020-10-28 13:14:42,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:42,177 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:42,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:14:42,177 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:42,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2127072346, now seen corresponding path program 1 times [2020-10-28 13:14:42,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:42,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745073275] [2020-10-28 13:14:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:42,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking...