/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=SHALLOWEST --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/Problem16_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:01:34,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:01:34,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:01:34,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:01:34,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:01:34,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:01:34,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:01:34,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:01:35,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:01:35,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:01:35,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:01:35,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:01:35,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:01:35,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:01:35,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:01:35,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:01:35,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:01:35,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:01:35,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:01:35,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:01:35,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:01:35,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:01:35,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:01:35,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:01:35,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:01:35,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:01:35,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:01:35,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:01:35,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:01:35,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:01:35,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:01:35,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:01:35,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:01:35,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:01:35,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:01:35,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:01:35,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:01:35,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:01:35,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:01:35,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:01:35,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:01:35,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:01:35,089 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:01:35,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:01:35,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:01:35,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:01:35,092 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:01:35,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:01:35,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:01:35,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:01:35,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:01:35,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:01:35,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:01:35,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:01:35,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:01:35,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:01:35,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:01:35,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:01:35,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:01:35,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:01:35,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:01:35,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:01:35,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:01:35,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:01:35,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:01:35,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:01:35,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:01:35,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:01:35,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:01:35,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:01:35,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:01:35,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:01:35,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:01:35,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:01:35,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:01:35,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:01:35,521 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:01:35,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46.c [2020-10-27 00:01:35,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be38d0fe2/1329d3a3e3f5465282efc8ad577ae892/FLAGbba58bebf [2020-10-27 00:01:36,515 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:01:36,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label46.c [2020-10-27 00:01:36,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be38d0fe2/1329d3a3e3f5465282efc8ad577ae892/FLAGbba58bebf [2020-10-27 00:01:36,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be38d0fe2/1329d3a3e3f5465282efc8ad577ae892 [2020-10-27 00:01:36,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:01:36,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:01:36,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:01:36,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:01:36,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:01:36,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:01:36" (1/1) ... [2020-10-27 00:01:36,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29916ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:36, skipping insertion in model container [2020-10-27 00:01:36,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:01:36" (1/1) ... [2020-10-27 00:01:36,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:01:36,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:01:37,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:01:37,605 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:01:37,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:01:37,848 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:01:37,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:37 WrapperNode [2020-10-27 00:01:37,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:01:37,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:01:37,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:01:37,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:01:37,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:37" (1/1) ... [2020-10-27 00:01:37,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:37" (1/1) ... [2020-10-27 00:01:37,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:37" (1/1) ... [2020-10-27 00:01:37,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:37" (1/1) ... [2020-10-27 00:01:38,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:37" (1/1) ... [2020-10-27 00:01:38,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:37" (1/1) ... [2020-10-27 00:01:38,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:37" (1/1) ... [2020-10-27 00:01:38,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:01:38,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:01:38,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:01:38,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:01:38,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:01:38,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:01:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:01:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:01:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:01:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:01:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:01:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:01:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:01:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:01:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:01:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:01:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:01:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:01:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:01:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:01:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:01:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:01:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:01:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:01:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:01:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:01:41,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:01:41,268 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:01:41,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:01:41 BoogieIcfgContainer [2020-10-27 00:01:41,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:01:41,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:01:41,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:01:41,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:01:41,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:01:36" (1/3) ... [2020-10-27 00:01:41,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5ad5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:01:41, skipping insertion in model container [2020-10-27 00:01:41,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:01:37" (2/3) ... [2020-10-27 00:01:41,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5ad5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:01:41, skipping insertion in model container [2020-10-27 00:01:41,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:01:41" (3/3) ... [2020-10-27 00:01:41,281 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label46.c [2020-10-27 00:01:41,294 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:01:41,301 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:01:41,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:01:41,346 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:01:41,346 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:01:41,346 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:01:41,346 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:01:41,346 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:01:41,347 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:01:41,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:01:41,347 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:01:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:01:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 00:01:41,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:41,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:41,386 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:41,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:41,393 INFO L82 PathProgramCache]: Analyzing trace with hash -717444172, now seen corresponding path program 1 times [2020-10-27 00:01:41,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:41,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157414991] [2020-10-27 00:01:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:42,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:42,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 00:01:42,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-27 00:01:42,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:42,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:01:42,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:42,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 00:01:42,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 00:01:42,347 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:01:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:42,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:42,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:42,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:42,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:42,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:01:42,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:42,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:01:42,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157414991] [2020-10-27 00:01:42,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:01:42,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:01:42,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488194932] [2020-10-27 00:01:42,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:01:42,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:42,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:01:42,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:01:42,460 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-27 00:01:42,661 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:01:43,438 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:01:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:52,215 INFO L93 Difference]: Finished difference Result 1520 states and 2854 transitions. [2020-10-27 00:01:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:01:52,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-27 00:01:52,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:52,249 INFO L225 Difference]: With dead ends: 1520 [2020-10-27 00:01:52,249 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 00:01:52,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 00:01:52,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-27 00:01:52,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-27 00:01:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1667 transitions. [2020-10-27 00:01:52,425 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1667 transitions. Word has length 23 [2020-10-27 00:01:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:52,426 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1667 transitions. [2020-10-27 00:01:52,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:01:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1667 transitions. [2020-10-27 00:01:52,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-27 00:01:52,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:52,439 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:52,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:01:52,440 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:52,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:52,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1055786606, now seen corresponding path program 1 times [2020-10-27 00:01:52,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:52,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418799894] [2020-10-27 00:01:52,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:52,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:55,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:57,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:57,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 00:01:57,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:01:57,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 00:01:57,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:01:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:57,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-27 00:01:57,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 00:01:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:57,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:57,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:57,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:57,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:57,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:01:57,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:57,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:57,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:57,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:57,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:57,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:57,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:57,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:01:57,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-27 00:01:57,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:01:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 00:01:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:58,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:58,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:58,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 00:01:58,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 00:01:58,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:01:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:01:58,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418799894] [2020-10-27 00:01:58,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:58,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:58,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204077477] [2020-10-27 00:01:58,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:01:58,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:58,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:01:58,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:01:58,467 INFO L87 Difference]: Start difference. First operand 1032 states and 1667 transitions. Second operand 8 states. [2020-10-27 00:01:58,622 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:02:01,586 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:02:06,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:06,337 INFO L93 Difference]: Finished difference Result 2771 states and 4601 transitions. [2020-10-27 00:02:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:02:06,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-10-27 00:02:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:06,352 INFO L225 Difference]: With dead ends: 2771 [2020-10-27 00:02:06,352 INFO L226 Difference]: Without dead ends: 1745 [2020-10-27 00:02:06,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:02:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2020-10-27 00:02:06,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1728. [2020-10-27 00:02:06,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2020-10-27 00:02:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2623 transitions. [2020-10-27 00:02:06,436 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2623 transitions. Word has length 190 [2020-10-27 00:02:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:06,437 INFO L481 AbstractCegarLoop]: Abstraction has 1728 states and 2623 transitions. [2020-10-27 00:02:06,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:02:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2623 transitions. [2020-10-27 00:02:06,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-27 00:02:06,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:06,445 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:06,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:02:06,446 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:06,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1317188930, now seen corresponding path program 1 times [2020-10-27 00:02:06,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:06,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54866302] [2020-10-27 00:02:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:09,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:09,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:02:09,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:02:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3213 [2020-10-27 00:02:09,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:02:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 00:02:09,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:09,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:09,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:09,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:09,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:09,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:02:09,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:09,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:10,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:10,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:10,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:10,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 00:02:10,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:10,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:02:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 00:02:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:10,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:10,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 00:02:10,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:02:10,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 00:02:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:02:10,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54866302] [2020-10-27 00:02:10,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:10,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:02:10,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847883098] [2020-10-27 00:02:10,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:02:10,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:10,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:02:10,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:02:10,447 INFO L87 Difference]: Start difference. First operand 1728 states and 2623 transitions. Second operand 8 states. [2020-10-27 00:02:10,594 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:02:13,783 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:02:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:17,848 INFO L93 Difference]: Finished difference Result 3831 states and 5790 transitions. [2020-10-27 00:02:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:02:17,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-10-27 00:02:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:17,869 INFO L225 Difference]: With dead ends: 3831 [2020-10-27 00:02:17,869 INFO L226 Difference]: Without dead ends: 2109 [2020-10-27 00:02:17,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:02:17,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2020-10-27 00:02:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1738. [2020-10-27 00:02:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2020-10-27 00:02:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2365 transitions. [2020-10-27 00:02:17,939 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2365 transitions. Word has length 230 [2020-10-27 00:02:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:17,939 INFO L481 AbstractCegarLoop]: Abstraction has 1738 states and 2365 transitions. [2020-10-27 00:02:17,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:02:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2365 transitions. [2020-10-27 00:02:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-27 00:02:17,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:17,948 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 00:02:17,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:02:17,948 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:17,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:17,949 INFO L82 PathProgramCache]: Analyzing trace with hash 142596889, now seen corresponding path program 1 times [2020-10-27 00:02:17,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:17,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872647722] [2020-10-27 00:02:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:18,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:18,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:19,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-27 00:02:23,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:23,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 00:02:23,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:02:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 00:02:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:23,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:02:23,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:23,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-27 00:02:23,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:23,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 00:02:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:23,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:02:23,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-27 00:02:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 00:02:23,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:02:23,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 00:02:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 45 proven. 197 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-27 00:02:24,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872647722] [2020-10-27 00:02:24,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:24,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:24,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120274] [2020-10-27 00:02:24,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:24,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:24,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:24,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:24,061 INFO L87 Difference]: Start difference. First operand 1738 states and 2365 transitions. Second operand 7 states. [2020-10-27 00:02:24,236 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:02:27,909 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:02:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:31,708 INFO L93 Difference]: Finished difference Result 5252 states and 7251 transitions. [2020-10-27 00:02:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:02:31,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-27 00:02:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:31,734 INFO L225 Difference]: With dead ends: 5252 [2020-10-27 00:02:31,735 INFO L226 Difference]: Without dead ends: 3520 [2020-10-27 00:02:31,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:02:31,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2020-10-27 00:02:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 3164. [2020-10-27 00:02:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-10-27 00:02:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 4046 transitions. [2020-10-27 00:02:31,864 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 4046 transitions. Word has length 359 [2020-10-27 00:02:31,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:31,864 INFO L481 AbstractCegarLoop]: Abstraction has 3164 states and 4046 transitions. [2020-10-27 00:02:31,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:31,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 4046 transitions. [2020-10-27 00:02:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-27 00:02:31,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:31,877 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:31,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:02:31,877 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:31,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:31,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1253455532, now seen corresponding path program 1 times [2020-10-27 00:02:31,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:31,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799201389] [2020-10-27 00:02:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:31,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:32,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:32,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:36,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-27 00:02:36,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:02:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 00:02:36,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:02:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:02:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:37,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:37,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:37,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:37,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:37,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:37,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:02:37,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:37,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:37,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:37,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:02:37,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:37,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 00:02:37,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:02:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:02:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:37,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:37,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:37,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 00:02:37,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:02:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 00:02:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:37,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:37,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:37,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:37,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:02:37,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 00:02:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:37,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:37,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:37,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 00:02:37,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:02:37,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 00:02:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 60 proven. 285 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-27 00:02:38,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799201389] [2020-10-27 00:02:38,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:38,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:38,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369053030] [2020-10-27 00:02:38,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:38,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:38,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:38,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:38,055 INFO L87 Difference]: Start difference. First operand 3164 states and 4046 transitions. Second operand 7 states. [2020-10-27 00:02:42,457 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:02:45,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:45,338 INFO L93 Difference]: Finished difference Result 7068 states and 8973 transitions. [2020-10-27 00:02:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:02:45,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 468 [2020-10-27 00:02:45,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:45,363 INFO L225 Difference]: With dead ends: 7068 [2020-10-27 00:02:45,364 INFO L226 Difference]: Without dead ends: 3910 [2020-10-27 00:02:45,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:02:45,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2020-10-27 00:02:45,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3855. [2020-10-27 00:02:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3855 states. [2020-10-27 00:02:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 4805 transitions. [2020-10-27 00:02:45,496 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 4805 transitions. Word has length 468 [2020-10-27 00:02:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:45,497 INFO L481 AbstractCegarLoop]: Abstraction has 3855 states and 4805 transitions. [2020-10-27 00:02:45,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:45,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 4805 transitions. [2020-10-27 00:02:45,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-27 00:02:45,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:45,513 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:45,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:02:45,513 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:45,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:45,514 INFO L82 PathProgramCache]: Analyzing trace with hash -926544493, now seen corresponding path program 1 times [2020-10-27 00:02:45,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:45,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338927485] [2020-10-27 00:02:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:45,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:50,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-10-27 00:02:50,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:02:50,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-27 00:02:50,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:02:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:02:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:50,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:50,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:02:50,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:02:51,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 00:02:51,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:02:51,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:02:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:02:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:02:51,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 00:02:51,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:02:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 00:02:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:51,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:02:51,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:02:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:51,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:51,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-27 00:02:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:51,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:02:51,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:51,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-27 00:02:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 00:02:51,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:02:51,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 00:02:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:51,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 175 proven. 293 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2020-10-27 00:02:52,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338927485] [2020-10-27 00:02:52,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:52,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:52,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158390453] [2020-10-27 00:02:52,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:52,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:52,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:52,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:52,102 INFO L87 Difference]: Start difference. First operand 3855 states and 4805 transitions. Second operand 7 states. [2020-10-27 00:02:52,856 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:02:54,686 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:03:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:02,445 INFO L93 Difference]: Finished difference Result 9105 states and 11487 transitions. [2020-10-27 00:03:02,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:02,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 559 [2020-10-27 00:03:02,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:02,480 INFO L225 Difference]: With dead ends: 9105 [2020-10-27 00:03:02,481 INFO L226 Difference]: Without dead ends: 5197 [2020-10-27 00:03:02,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:02,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5197 states. [2020-10-27 00:03:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5197 to 4515. [2020-10-27 00:03:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4515 states. [2020-10-27 00:03:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4515 states to 4515 states and 4950 transitions. [2020-10-27 00:03:02,625 INFO L78 Accepts]: Start accepts. Automaton has 4515 states and 4950 transitions. Word has length 559 [2020-10-27 00:03:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:02,626 INFO L481 AbstractCegarLoop]: Abstraction has 4515 states and 4950 transitions. [2020-10-27 00:03:02,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:02,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4515 states and 4950 transitions. [2020-10-27 00:03:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2020-10-27 00:03:02,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:02,660 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:02,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:03:02,661 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:02,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:02,662 INFO L82 PathProgramCache]: Analyzing trace with hash 981757051, now seen corresponding path program 1 times [2020-10-27 00:03:02,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:02,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80955948] [2020-10-27 00:03:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:07,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 851 [2020-10-27 00:03:07,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 00:03:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:03:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:08,046 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:03:08,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:08,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:08,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:08,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:08,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:08,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:03:08,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:08,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:08,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:08,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:08,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:08,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:08,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:08,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:08,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 00:03:08,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:08,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:08,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:08,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:03:08,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:08,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:08,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:08,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:08,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 00:03:08,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:08,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:03:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:08,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:08,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:08,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:08,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:08,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:03:08,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:08,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:08,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:08,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:03:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:08,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:08,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:08,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:08,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:03:08,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:08,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:03:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:09,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:09,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:09,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:03:09,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:09,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 00:03:09,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:03:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:09,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 213 proven. 347 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2020-10-27 00:03:09,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80955948] [2020-10-27 00:03:09,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:09,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:09,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903781854] [2020-10-27 00:03:09,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:09,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:09,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:09,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:09,699 INFO L87 Difference]: Start difference. First operand 4515 states and 4950 transitions. Second operand 7 states. [2020-10-27 00:03:11,366 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:03:14,387 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:03:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:15,890 INFO L93 Difference]: Finished difference Result 10411 states and 11524 transitions. [2020-10-27 00:03:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:15,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 831 [2020-10-27 00:03:15,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:15,920 INFO L225 Difference]: With dead ends: 10411 [2020-10-27 00:03:15,920 INFO L226 Difference]: Without dead ends: 6239 [2020-10-27 00:03:15,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6239 states. [2020-10-27 00:03:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6239 to 5884. [2020-10-27 00:03:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5884 states. [2020-10-27 00:03:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 6293 transitions. [2020-10-27 00:03:16,108 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 6293 transitions. Word has length 831 [2020-10-27 00:03:16,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:16,109 INFO L481 AbstractCegarLoop]: Abstraction has 5884 states and 6293 transitions. [2020-10-27 00:03:16,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 6293 transitions. [2020-10-27 00:03:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2020-10-27 00:03:16,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:16,126 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:16,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:03:16,127 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:16,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1267155110, now seen corresponding path program 1 times [2020-10-27 00:03:16,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:16,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121581432] [2020-10-27 00:03:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:16,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:17,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:21,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:21,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:21,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 961 [2020-10-27 00:03:21,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:21,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 00:03:21,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:03:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:21,450 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:03:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:21,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:21,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:21,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:21,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:03:21,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:21,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:21,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:21,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:21,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:21,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:21,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:03:21,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:21,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:21,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:21,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:21,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:21,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:03:21,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:03:21,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:21,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:21,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:21,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:21,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 00:03:21,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 00:03:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:22,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:22,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:22,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:03:22,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:22,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:22,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:03:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:22,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:22,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:22,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:03:22,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-27 00:03:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:22,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:03:22,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:03:22,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:03:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 342 proven. 347 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2020-10-27 00:03:23,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121581432] [2020-10-27 00:03:23,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:23,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:23,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575827558] [2020-10-27 00:03:23,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:23,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:23,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:23,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:23,004 INFO L87 Difference]: Start difference. First operand 5884 states and 6293 transitions. Second operand 7 states. [2020-10-27 00:03:25,384 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:03:27,849 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:03:29,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:29,127 INFO L93 Difference]: Finished difference Result 12793 states and 13833 transitions. [2020-10-27 00:03:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:29,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 939 [2020-10-27 00:03:29,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:29,156 INFO L225 Difference]: With dead ends: 12793 [2020-10-27 00:03:29,156 INFO L226 Difference]: Without dead ends: 7254 [2020-10-27 00:03:29,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7254 states. [2020-10-27 00:03:29,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7254 to 7238. [2020-10-27 00:03:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7238 states. [2020-10-27 00:03:29,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 7700 transitions. [2020-10-27 00:03:29,326 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 7700 transitions. Word has length 939 [2020-10-27 00:03:29,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:29,328 INFO L481 AbstractCegarLoop]: Abstraction has 7238 states and 7700 transitions. [2020-10-27 00:03:29,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:29,328 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 7700 transitions. [2020-10-27 00:03:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2020-10-27 00:03:29,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:29,351 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:03:29,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:03:29,352 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:29,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1807677207, now seen corresponding path program 1 times [2020-10-27 00:03:29,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:29,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253120333] [2020-10-27 00:03:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:29,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:29,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:30,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:30,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:34,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:34,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1223 [2020-10-27 00:03:34,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:03:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 00:03:34,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:03:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-27 00:03:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:34,801 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:03:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:34,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:34,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:34,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:34,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:34,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:03:34,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:34,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:34,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:34,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:34,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:34,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:35,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:03:35,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 00:03:35,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:03:35,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:03:35,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 00:03:35,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:03:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:35,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 00:03:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:03:35,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:03:35,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:03:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-27 00:03:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:03:35,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:03:35,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:03:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:35,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-27 00:03:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:03:36,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:03:36,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:03:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-27 00:03:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:36,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:36,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:03:36,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 969 [2020-10-27 00:03:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:36,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:03:36,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:36,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:03:36,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:36,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:03:36,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:36,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2746 backedges. 366 proven. 1312 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2020-10-27 00:03:37,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253120333] [2020-10-27 00:03:37,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:37,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:03:37,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432206374] [2020-10-27 00:03:37,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:03:37,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:37,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:03:37,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:03:37,800 INFO L87 Difference]: Start difference. First operand 7238 states and 7700 transitions. Second operand 8 states. [2020-10-27 00:03:37,966 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:03:42,354 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:03:43,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:43,536 INFO L93 Difference]: Finished difference Result 14153 states and 15079 transitions. [2020-10-27 00:03:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 00:03:43,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1199 [2020-10-27 00:03:43,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:43,566 INFO L225 Difference]: With dead ends: 14153 [2020-10-27 00:03:43,566 INFO L226 Difference]: Without dead ends: 7260 [2020-10-27 00:03:43,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-27 00:03:43,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7260 states. [2020-10-27 00:03:43,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7260 to 7238. [2020-10-27 00:03:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7238 states. [2020-10-27 00:03:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 7694 transitions. [2020-10-27 00:03:43,730 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 7694 transitions. Word has length 1199 [2020-10-27 00:03:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:43,731 INFO L481 AbstractCegarLoop]: Abstraction has 7238 states and 7694 transitions. [2020-10-27 00:03:43,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:03:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 7694 transitions. [2020-10-27 00:03:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1234 [2020-10-27 00:03:43,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:43,757 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:43,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:03:43,757 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:43,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:43,758 INFO L82 PathProgramCache]: Analyzing trace with hash -177987012, now seen corresponding path program 1 times [2020-10-27 00:03:43,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:43,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951530826] [2020-10-27 00:03:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:49,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:49,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1259 [2020-10-27 00:03:49,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:03:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 00:03:49,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:03:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 00:03:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:49,267 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:03:49,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:49,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:49,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:49,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:49,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:49,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:49,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:49,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:49,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:49,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 00:03:49,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:03:49,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:49,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:49,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:49,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:03:49,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:49,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 00:03:49,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 00:03:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-27 00:03:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:49,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:49,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:49,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:49,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:03:49,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:03:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-27 00:03:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:03:50,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:50,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:03:50,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:03:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:50,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:50,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-27 00:03:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:50,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-27 00:03:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:03:50,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:03:50,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:03:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 893 [2020-10-27 00:03:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:50,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:50,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:50,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:03:50,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:50,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2020-10-27 00:03:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:03:50,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:03:50,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:03:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:50,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3447 backedges. 303 proven. 740 refuted. 0 times theorem prover too weak. 2404 trivial. 0 not checked. [2020-10-27 00:03:51,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951530826] [2020-10-27 00:03:51,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:51,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:51,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332505644] [2020-10-27 00:03:51,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:51,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:51,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:51,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:51,571 INFO L87 Difference]: Start difference. First operand 7238 states and 7694 transitions. Second operand 7 states. [2020-10-27 00:03:51,738 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 00:03:55,781 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:03:56,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:56,996 INFO L93 Difference]: Finished difference Result 16861 states and 17967 transitions. [2020-10-27 00:03:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:57,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1233 [2020-10-27 00:03:57,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:57,030 INFO L225 Difference]: With dead ends: 16861 [2020-10-27 00:03:57,030 INFO L226 Difference]: Without dead ends: 9968 [2020-10-27 00:03:57,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:03:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9968 states. [2020-10-27 00:03:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9968 to 8941. [2020-10-27 00:03:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8941 states. [2020-10-27 00:03:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8941 states to 8941 states and 9503 transitions. [2020-10-27 00:03:57,235 INFO L78 Accepts]: Start accepts. Automaton has 8941 states and 9503 transitions. Word has length 1233 [2020-10-27 00:03:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:57,237 INFO L481 AbstractCegarLoop]: Abstraction has 8941 states and 9503 transitions. [2020-10-27 00:03:57,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 8941 states and 9503 transitions. [2020-10-27 00:03:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1295 [2020-10-27 00:03:57,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:57,268 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 00:03:57,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:03:57,268 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:57,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1860467446, now seen corresponding path program 1 times [2020-10-27 00:03:57,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:57,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384992462] [2020-10-27 00:03:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:57,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:57,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1320 [2020-10-27 00:04:02,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-27 00:04:02,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:04:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:04:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:02,863 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:04:02,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:02,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:02,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:04:02,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:02,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:02,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:04:02,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:02,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:04:02,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:02,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:02,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:02,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:04:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:04:03,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 00:04:03,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:03,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:03,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:04:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:04:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:03,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-27 00:04:03,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:04:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:04:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:04:03,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:04:03,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:04:03,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 00:04:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:04:03,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:04:03,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:04:03,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2020-10-27 00:04:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:04:03,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:04:03,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:04:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 954 [2020-10-27 00:04:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:03,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:04:03,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-27 00:04:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:04:03,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:04:03,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:04:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3561 backedges. 417 proven. 553 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2020-10-27 00:04:05,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384992462] [2020-10-27 00:04:05,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:05,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:05,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097318907] [2020-10-27 00:04:05,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:05,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:05,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:05,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:05,012 INFO L87 Difference]: Start difference. First operand 8941 states and 9503 transitions. Second operand 7 states. [2020-10-27 00:04:07,664 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 00:04:09,985 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 00:04:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:10,786 INFO L93 Difference]: Finished difference Result 17894 states and 19062 transitions. [2020-10-27 00:04:10,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:04:10,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1294 [2020-10-27 00:04:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:10,824 INFO L225 Difference]: With dead ends: 17894 [2020-10-27 00:04:10,825 INFO L226 Difference]: Without dead ends: 9298 [2020-10-27 00:04:10,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:04:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9298 states. [2020-10-27 00:04:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9298 to 9284. [2020-10-27 00:04:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9284 states. [2020-10-27 00:04:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9284 states to 9284 states and 9862 transitions. [2020-10-27 00:04:11,021 INFO L78 Accepts]: Start accepts. Automaton has 9284 states and 9862 transitions. Word has length 1294 [2020-10-27 00:04:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:11,022 INFO L481 AbstractCegarLoop]: Abstraction has 9284 states and 9862 transitions. [2020-10-27 00:04:11,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 9284 states and 9862 transitions. [2020-10-27 00:04:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1297 [2020-10-27 00:04:11,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:11,051 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 00:04:11,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:04:11,052 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:11,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:11,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1246261830, now seen corresponding path program 1 times [2020-10-27 00:04:11,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:11,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811187005] [2020-10-27 00:04:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:12,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:16,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:16,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1322 [2020-10-27 00:04:16,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:04:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 00:04:16,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:04:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:04:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:16,609 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:04:16,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:16,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:16,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:16,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:04:16,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:16,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:16,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:16,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:16,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:04:16,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:04:16,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:16,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:04:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:16,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:16,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:04:16,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 00:04:16,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:04:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:16,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:04:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:17,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:17,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 00:04:17,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:04:17,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:04:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:17,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:04:17,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:17,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:04:17,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:04:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-27 00:04:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:17,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:04:17,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:17,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:04:17,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:04:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:17,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:17,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 814 [2020-10-27 00:04:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:17,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:04:17,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:04:17,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:04:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:17,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 956 [2020-10-27 00:04:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:17,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:17,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:04:17,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:17,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1066 [2020-10-27 00:04:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:17,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:04:17,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:17,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:04:17,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:04:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:17,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3563 backedges. 417 proven. 553 refuted. 0 times theorem prover too weak. 2593 trivial. 0 not checked. [2020-10-27 00:04:18,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811187005] [2020-10-27 00:04:18,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:18,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:18,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3462301] [2020-10-27 00:04:18,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:18,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:18,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:18,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:18,719 INFO L87 Difference]: Start difference. First operand 9284 states and 9862 transitions. Second operand 7 states. [2020-10-27 00:04:18,876 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:04:23,036 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:04:24,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:24,378 INFO L93 Difference]: Finished difference Result 22974 states and 24534 transitions. [2020-10-27 00:04:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:04:24,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1296 [2020-10-27 00:04:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:24,418 INFO L225 Difference]: With dead ends: 22974 [2020-10-27 00:04:24,419 INFO L226 Difference]: Without dead ends: 14035 [2020-10-27 00:04:24,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:04:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14035 states. [2020-10-27 00:04:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14035 to 11327. [2020-10-27 00:04:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11327 states. [2020-10-27 00:04:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11327 states to 11327 states and 12148 transitions. [2020-10-27 00:04:24,677 INFO L78 Accepts]: Start accepts. Automaton has 11327 states and 12148 transitions. Word has length 1296 [2020-10-27 00:04:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:24,678 INFO L481 AbstractCegarLoop]: Abstraction has 11327 states and 12148 transitions. [2020-10-27 00:04:24,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 11327 states and 12148 transitions. [2020-10-27 00:04:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1360 [2020-10-27 00:04:24,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:24,715 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2020-10-27 00:04:24,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:04:24,716 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:24,717 INFO L82 PathProgramCache]: Analyzing trace with hash -881158783, now seen corresponding path program 1 times [2020-10-27 00:04:24,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:24,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445118725] [2020-10-27 00:04:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:28,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:30,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:30,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1387 [2020-10-27 00:04:30,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:04:30,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-27 00:04:30,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:04:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:04:30,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:30,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:30,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:30,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:30,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:30,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:04:30,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:30,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:30,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:30,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:30,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:30,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:30,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:04:30,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:30,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:30,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:30,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:30,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:30,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:04:30,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:30,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:30,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:04:30,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:04:30,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:30,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:04:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:30,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:30,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:04:30,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:30,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:04:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:30,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:30,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:04:30,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:30,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:04:30,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:04:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:30,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:04:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:30,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:30,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:30,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:04:30,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:04:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-27 00:04:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 00:04:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:04:31,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 00:04:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1019 [2020-10-27 00:04:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:31,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:04:31,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:31,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1129 [2020-10-27 00:04:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:04:31,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:04:31,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:04:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:04:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4223 backedges. 715 proven. 333 refuted. 0 times theorem prover too weak. 3175 trivial. 0 not checked. [2020-10-27 00:04:32,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445118725] [2020-10-27 00:04:32,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:32,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:32,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324359273] [2020-10-27 00:04:32,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:32,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:32,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:32,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:32,465 INFO L87 Difference]: Start difference. First operand 11327 states and 12148 transitions. Second operand 7 states. [2020-10-27 00:04:34,305 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:04:37,180 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:04:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:40,768 INFO L93 Difference]: Finished difference Result 26381 states and 28308 transitions. [2020-10-27 00:04:40,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:04:40,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1359 [2020-10-27 00:04:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:40,818 INFO L225 Difference]: With dead ends: 26381 [2020-10-27 00:04:40,818 INFO L226 Difference]: Without dead ends: 15399 [2020-10-27 00:04:40,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:04:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15399 states. [2020-10-27 00:04:41,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15399 to 14718. [2020-10-27 00:04:41,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14718 states. [2020-10-27 00:04:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14718 states to 14718 states and 15672 transitions. [2020-10-27 00:04:41,090 INFO L78 Accepts]: Start accepts. Automaton has 14718 states and 15672 transitions. Word has length 1359 [2020-10-27 00:04:41,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:41,091 INFO L481 AbstractCegarLoop]: Abstraction has 14718 states and 15672 transitions. [2020-10-27 00:04:41,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 14718 states and 15672 transitions. [2020-10-27 00:04:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1416 [2020-10-27 00:04:41,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:41,130 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:41,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:04:41,130 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:41,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1028270782, now seen corresponding path program 1 times [2020-10-27 00:04:41,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:41,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333445021] [2020-10-27 00:04:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:41,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:41,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:42,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:46,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1445 [2020-10-27 00:04:46,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:46,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 00:04:46,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-27 00:04:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:04:46,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:46,657 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:04:46,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:46,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:46,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:04:46,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:46,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:46,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:46,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:46,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:04:46,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:46,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:46,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:46,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:46,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:04:46,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:46,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:46,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:46,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:46,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:46,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:46,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:04:46,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:04:46,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:46,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:04:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:47,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:47,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:47,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:04:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:47,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:47,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:04:47,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:47,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:04:47,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:04:47,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2020-10-27 00:04:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:47,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:47,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:04:47,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:04:47,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:04:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-27 00:04:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:47,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:47,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:04:47,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:47,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:04:47,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:04:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:47,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1001 [2020-10-27 00:04:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:47,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:47,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:04:47,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:47,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:04:47,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:04:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:47,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:47,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-27 00:04:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:47,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:47,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:47,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:47,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:04:47,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:47,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1185 [2020-10-27 00:04:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:47,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:47,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:47,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:04:47,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:47,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:04:47,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:04:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4907 backedges. 509 proven. 332 refuted. 0 times theorem prover too weak. 4066 trivial. 0 not checked. [2020-10-27 00:04:49,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333445021] [2020-10-27 00:04:49,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:49,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:49,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734593499] [2020-10-27 00:04:49,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:49,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:49,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:49,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:49,017 INFO L87 Difference]: Start difference. First operand 14718 states and 15672 transitions. Second operand 7 states. [2020-10-27 00:04:49,184 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 00:04:53,255 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:04:54,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:54,505 INFO L93 Difference]: Finished difference Result 31121 states and 33120 transitions. [2020-10-27 00:04:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:04:54,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1415 [2020-10-27 00:04:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:54,558 INFO L225 Difference]: With dead ends: 31121 [2020-10-27 00:04:54,558 INFO L226 Difference]: Without dead ends: 16748 [2020-10-27 00:04:54,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:54,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16748 states. [2020-10-27 00:04:54,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16748 to 15729. [2020-10-27 00:04:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15729 states. [2020-10-27 00:04:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15729 states to 15729 states and 16723 transitions. [2020-10-27 00:04:54,892 INFO L78 Accepts]: Start accepts. Automaton has 15729 states and 16723 transitions. Word has length 1415 [2020-10-27 00:04:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:54,893 INFO L481 AbstractCegarLoop]: Abstraction has 15729 states and 16723 transitions. [2020-10-27 00:04:54,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 15729 states and 16723 transitions. [2020-10-27 00:04:54,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1428 [2020-10-27 00:04:54,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:54,933 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:54,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:04:54,933 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:54,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:54,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1691402985, now seen corresponding path program 1 times [2020-10-27 00:04:54,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:54,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810771003] [2020-10-27 00:04:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:55,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:57,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1455 [2020-10-27 00:05:00,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:05:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 00:05:00,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:05:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-27 00:05:00,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,470 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:05:00,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:00,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:05:00,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:00,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:00,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:00,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:05:00,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:00,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:00,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:05:00,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:00,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:05:00,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:05:00,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:05:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 00:05:00,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:00,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-27 00:05:00,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:05:00,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-27 00:05:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 00:05:01,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:05:01,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 00:05:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-27 00:05:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:05:01,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:05:01,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:05:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 871 [2020-10-27 00:05:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:05:01,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:05:01,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:05:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1013 [2020-10-27 00:05:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:05:01,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:05:01,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:05:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1087 [2020-10-27 00:05:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:01,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:05:01,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:01,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1197 [2020-10-27 00:05:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:05:01,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:05:01,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:05:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4481 backedges. 501 proven. 822 refuted. 0 times theorem prover too weak. 3158 trivial. 0 not checked. [2020-10-27 00:05:02,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810771003] [2020-10-27 00:05:02,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:02,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:02,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972416725] [2020-10-27 00:05:02,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:02,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:02,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:02,827 INFO L87 Difference]: Start difference. First operand 15729 states and 16723 transitions. Second operand 7 states. [2020-10-27 00:05:02,994 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:05:07,157 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 65