/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/Problem18_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:25:46,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:25:46,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:25:46,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:25:46,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:25:46,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:25:46,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:25:46,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:25:46,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:25:46,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:25:46,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:25:46,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:25:46,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:25:46,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:25:46,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:25:46,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:25:46,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:25:46,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:25:46,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:25:46,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:25:46,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:25:46,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:25:46,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:25:46,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:25:46,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:25:46,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:25:46,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:25:46,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:25:46,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:25:46,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:25:46,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:25:46,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:25:46,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:25:46,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:25:46,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:25:46,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:25:46,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:25:46,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:25:46,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:25:46,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:25:46,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:25:46,330 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 00:25:46,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:25:46,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:25:46,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:25:46,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:25:46,381 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:25:46,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:25:46,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:25:46,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:25:46,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:25:46,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:25:46,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:25:46,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:25:46,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:25:46,384 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:25:46,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:25:46,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:25:46,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:25:46,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:25:46,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:25:46,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:25:46,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:25:46,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:25:46,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:25:46,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:25:46,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:25:46,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:25:46,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:25:46,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:25:46,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:25:46,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:25:46,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:25:46,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:25:46,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:25:46,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:25:46,829 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:25:46,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18.c [2020-10-27 00:25:46,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14d5ac3b0/d67e7b0667d348fc8c79dcf794ec7799/FLAGcf7de409e [2020-10-27 00:25:47,851 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:25:47,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label18.c [2020-10-27 00:25:47,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14d5ac3b0/d67e7b0667d348fc8c79dcf794ec7799/FLAGcf7de409e [2020-10-27 00:25:47,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14d5ac3b0/d67e7b0667d348fc8c79dcf794ec7799 [2020-10-27 00:25:47,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:25:47,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:25:47,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:25:47,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:25:47,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:25:47,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:25:47" (1/1) ... [2020-10-27 00:25:47,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ba116a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:47, skipping insertion in model container [2020-10-27 00:25:47,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:25:47" (1/1) ... [2020-10-27 00:25:47,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:25:48,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:25:49,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:25:49,214 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:25:49,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:25:49,773 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:25:49,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:49 WrapperNode [2020-10-27 00:25:49,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:25:49,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:25:49,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:25:49,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:25:49,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:49" (1/1) ... [2020-10-27 00:25:49,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:49" (1/1) ... [2020-10-27 00:25:49,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:49" (1/1) ... [2020-10-27 00:25:49,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:49" (1/1) ... [2020-10-27 00:25:49,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:49" (1/1) ... [2020-10-27 00:25:50,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:49" (1/1) ... [2020-10-27 00:25:50,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:49" (1/1) ... [2020-10-27 00:25:50,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:25:50,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:25:50,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:25:50,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:25:50,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:49" (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 00:25:50,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:25:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:25:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:25:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:25:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:25:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:25:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:25:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:25:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:25:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:25:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:25:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:25:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:25:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:25:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:25:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:25:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:25:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:25:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:25:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:25:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:25:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:25:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:25:55,426 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:25:55,426 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:25:55,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:25:55 BoogieIcfgContainer [2020-10-27 00:25:55,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:25:55,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:25:55,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:25:55,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:25:55,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:25:47" (1/3) ... [2020-10-27 00:25:55,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ff9d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:25:55, skipping insertion in model container [2020-10-27 00:25:55,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:49" (2/3) ... [2020-10-27 00:25:55,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ff9d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:25:55, skipping insertion in model container [2020-10-27 00:25:55,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:25:55" (3/3) ... [2020-10-27 00:25:55,439 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label18.c [2020-10-27 00:25:55,450 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:25:55,456 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:25:55,469 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:25:55,511 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:25:55,511 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:25:55,511 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:25:55,511 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:25:55,511 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:25:55,512 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:25:55,512 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:25:55,512 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:25:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:25:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 00:25:55,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:25:55,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:25:55,557 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:25:55,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:25:55,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1171918200, now seen corresponding path program 1 times [2020-10-27 00:25:55,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:25:55,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343758012] [2020-10-27 00:25:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:25:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:56,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:25:56,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-27 00:25:56,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:25:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:25:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:25:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:25:56,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:25:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:56,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:56,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:25:56,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:56,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:25:56,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:25:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:25:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:25:56,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:56,643 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 00:25:56,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343758012] [2020-10-27 00:25:56,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:25:56,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:25:56,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778066209] [2020-10-27 00:25:56,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:25:56,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:25:56,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:25:56,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:25:56,674 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:25:56,869 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:25:57,633 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:26:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:26:15,463 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-27 00:26:15,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:26:15,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-27 00:26:15,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:26:15,505 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:26:15,506 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:26:15,516 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 00:26:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:26:15,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:26:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:26:15,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3564 transitions. [2020-10-27 00:26:15,690 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3564 transitions. Word has length 64 [2020-10-27 00:26:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:26:15,692 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3564 transitions. [2020-10-27 00:26:15,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:26:15,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3564 transitions. [2020-10-27 00:26:15,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 00:26:15,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:15,703 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:26:15,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:26:15,704 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:15,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1977205392, now seen corresponding path program 1 times [2020-10-27 00:26:15,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:15,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650916288] [2020-10-27 00:26:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:16,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:17,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:17,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 00:26:17,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:26:17,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-10-27 00:26:17,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:17,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:26:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:26:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:26:17,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:26:17,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:17,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:17,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:17,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:26:17,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:17,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:17,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:26:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 00:26:17,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:26:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:17,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:26:17,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:26:17,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:26:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:26:18,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650916288] [2020-10-27 00:26:18,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:26:18,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:26:18,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166631088] [2020-10-27 00:26:18,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:26:18,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:26:18,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:26:18,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:26:18,188 INFO L87 Difference]: Start difference. First operand 2136 states and 3564 transitions. Second operand 7 states. [2020-10-27 00:26:18,332 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:26:19,873 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:26:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:26:33,057 INFO L93 Difference]: Finished difference Result 6463 states and 10860 transitions. [2020-10-27 00:26:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:26:33,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-27 00:26:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:26:33,093 INFO L225 Difference]: With dead ends: 6463 [2020-10-27 00:26:33,093 INFO L226 Difference]: Without dead ends: 4333 [2020-10-27 00:26:33,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:26:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2020-10-27 00:26:33,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 3588. [2020-10-27 00:26:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-10-27 00:26:33,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 5289 transitions. [2020-10-27 00:26:33,217 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 5289 transitions. Word has length 134 [2020-10-27 00:26:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:26:33,218 INFO L481 AbstractCegarLoop]: Abstraction has 3588 states and 5289 transitions. [2020-10-27 00:26:33,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:26:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 5289 transitions. [2020-10-27 00:26:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 00:26:33,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:33,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:26:33,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:26:33,221 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:33,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:33,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1095506086, now seen corresponding path program 1 times [2020-10-27 00:26:33,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:33,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668771594] [2020-10-27 00:26:33,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:33,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:34,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:34,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 00:26:34,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:26:34,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-10-27 00:26:34,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:26:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:26:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 00:26:34,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:34,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:34,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:34,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:34,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:34,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:26:34,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:26:34,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:34,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:26:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:34,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:34,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:26:34,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:26:34,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:26:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:26:34,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668771594] [2020-10-27 00:26:34,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:26:34,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:26:34,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084829007] [2020-10-27 00:26:34,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:26:34,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:26:34,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:26:34,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:26:34,567 INFO L87 Difference]: Start difference. First operand 3588 states and 5289 transitions. Second operand 8 states. [2020-10-27 00:26:34,708 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:26:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:26:50,248 INFO L93 Difference]: Finished difference Result 8702 states and 12662 transitions. [2020-10-27 00:26:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:26:50,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-10-27 00:26:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:26:50,277 INFO L225 Difference]: With dead ends: 8702 [2020-10-27 00:26:50,277 INFO L226 Difference]: Without dead ends: 5120 [2020-10-27 00:26:50,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:26:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2020-10-27 00:26:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 5092. [2020-10-27 00:26:50,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5092 states. [2020-10-27 00:26:50,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 6842 transitions. [2020-10-27 00:26:50,418 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 6842 transitions. Word has length 139 [2020-10-27 00:26:50,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:26:50,419 INFO L481 AbstractCegarLoop]: Abstraction has 5092 states and 6842 transitions. [2020-10-27 00:26:50,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:26:50,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 6842 transitions. [2020-10-27 00:26:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 00:26:50,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:50,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:26:50,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:26:50,425 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:50,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:50,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1893442450, now seen corresponding path program 1 times [2020-10-27 00:26:50,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:50,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083885999] [2020-10-27 00:26:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:50,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:50,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:51,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:52,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:52,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 00:26:52,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:26:52,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2067 [2020-10-27 00:26:52,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:26:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:26:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:26:52,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:52,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:52,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:52,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:26:52,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:26:52,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:52,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:26:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:52,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:52,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:52,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:26:52,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:52,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 00:26:52,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:26:52,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:26:53,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083885999] [2020-10-27 00:26:53,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:26:53,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:26:53,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32201310] [2020-10-27 00:26:53,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:26:53,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:26:53,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:26:53,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:26:53,111 INFO L87 Difference]: Start difference. First operand 5092 states and 6842 transitions. Second operand 7 states. [2020-10-27 00:26:53,259 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:26:54,928 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:27:07,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:07,005 INFO L93 Difference]: Finished difference Result 11123 states and 15153 transitions. [2020-10-27 00:27:07,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:27:07,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-27 00:27:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:07,041 INFO L225 Difference]: With dead ends: 11123 [2020-10-27 00:27:07,041 INFO L226 Difference]: Without dead ends: 6037 [2020-10-27 00:27:07,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:27:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6037 states. [2020-10-27 00:27:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6037 to 5844. [2020-10-27 00:27:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5844 states. [2020-10-27 00:27:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 7650 transitions. [2020-10-27 00:27:07,246 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 7650 transitions. Word has length 161 [2020-10-27 00:27:07,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:07,249 INFO L481 AbstractCegarLoop]: Abstraction has 5844 states and 7650 transitions. [2020-10-27 00:27:07,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:27:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 7650 transitions. [2020-10-27 00:27:07,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-27 00:27:07,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:07,254 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:07,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:27:07,255 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:07,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:07,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1290403848, now seen corresponding path program 1 times [2020-10-27 00:27:07,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:07,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683528140] [2020-10-27 00:27:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:08,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:08,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:08,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-27 00:27:08,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:27:08,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-27 00:27:08,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:27:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:27:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-27 00:27:08,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:08,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:08,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:08,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:08,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:08,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:27:08,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:08,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:08,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:27:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:08,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:08,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:08,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:27:08,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:08,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-27 00:27:08,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:08,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:08,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:08,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 00:27:08,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 00:27:08,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683528140] [2020-10-27 00:27:08,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:08,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:27:08,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398143837] [2020-10-27 00:27:08,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:27:08,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:08,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:27:08,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:27:08,934 INFO L87 Difference]: Start difference. First operand 5844 states and 7650 transitions. Second operand 6 states. [2020-10-27 00:27:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:24,012 INFO L93 Difference]: Finished difference Result 16210 states and 21965 transitions. [2020-10-27 00:27:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:27:24,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2020-10-27 00:27:24,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:24,079 INFO L225 Difference]: With dead ends: 16210 [2020-10-27 00:27:24,079 INFO L226 Difference]: Without dead ends: 11074 [2020-10-27 00:27:24,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:27:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11074 states. [2020-10-27 00:27:24,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11074 to 10283. [2020-10-27 00:27:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10283 states. [2020-10-27 00:27:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10283 states to 10283 states and 12877 transitions. [2020-10-27 00:27:24,375 INFO L78 Accepts]: Start accepts. Automaton has 10283 states and 12877 transitions. Word has length 250 [2020-10-27 00:27:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:24,376 INFO L481 AbstractCegarLoop]: Abstraction has 10283 states and 12877 transitions. [2020-10-27 00:27:24,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:27:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 10283 states and 12877 transitions. [2020-10-27 00:27:24,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-27 00:27:24,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:24,388 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:24,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:27:24,388 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:24,389 INFO L82 PathProgramCache]: Analyzing trace with hash -905802722, now seen corresponding path program 1 times [2020-10-27 00:27:24,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:24,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556250865] [2020-10-27 00:27:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:24,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:25,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:25,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:29,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:29,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-27 00:27:29,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:27:29,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 00:27:29,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:27:29,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:27:29,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:29,721 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:27:29,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:29,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:29,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:29,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:27:29,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:29,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:30,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:30,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:27:30,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:30,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 00:27:30,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:27:30,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:30,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:27:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:30,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:30,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:30,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:27:30,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:30,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 00:27:30,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:30,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:30,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:30,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:27:30,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:27:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:30,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:30,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:30,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:27:30,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:30,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:27:30,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:30,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:27:30,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:30,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:27:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 291 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 00:27:30,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556250865] [2020-10-27 00:27:30,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:30,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:27:30,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37151537] [2020-10-27 00:27:30,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:27:30,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:30,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:27:30,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:27:30,993 INFO L87 Difference]: Start difference. First operand 10283 states and 12877 transitions. Second operand 8 states. [2020-10-27 00:27:31,172 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:27:32,590 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:27:37,056 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:27:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:55,888 INFO L93 Difference]: Finished difference Result 24966 states and 31957 transitions. [2020-10-27 00:27:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 00:27:55,890 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 445 [2020-10-27 00:27:55,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:55,929 INFO L225 Difference]: With dead ends: 24966 [2020-10-27 00:27:55,929 INFO L226 Difference]: Without dead ends: 13831 [2020-10-27 00:27:55,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-27 00:27:55,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2020-10-27 00:27:56,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 13767. [2020-10-27 00:27:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13767 states. [2020-10-27 00:27:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13767 states to 13767 states and 15319 transitions. [2020-10-27 00:27:56,209 INFO L78 Accepts]: Start accepts. Automaton has 13767 states and 15319 transitions. Word has length 445 [2020-10-27 00:27:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:56,210 INFO L481 AbstractCegarLoop]: Abstraction has 13767 states and 15319 transitions. [2020-10-27 00:27:56,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:27:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 13767 states and 15319 transitions. [2020-10-27 00:27:56,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-27 00:27:56,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:56,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:56,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:27:56,221 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:56,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:56,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1752130494, now seen corresponding path program 1 times [2020-10-27 00:27:56,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:56,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916802347] [2020-10-27 00:27:56,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:56,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:56,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:01,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:01,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-27 00:28:01,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:28:01,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 00:28:01,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:28:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:28:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:28:01,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:01,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:01,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:01,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:01,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:01,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:28:01,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:28:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:01,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:02,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:02,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:28:02,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:02,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-27 00:28:02,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:28:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:02,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:02,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:28:02,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:02,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:28:02,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:28:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:28:02,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:02,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:28:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:02,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:02,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:02,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:28:02,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:28:02,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:28:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:02,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 112 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:28:03,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916802347] [2020-10-27 00:28:03,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:28:03,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:28:03,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144463733] [2020-10-27 00:28:03,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:28:03,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:03,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:28:03,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:28:03,047 INFO L87 Difference]: Start difference. First operand 13767 states and 15319 transitions. Second operand 8 states. [2020-10-27 00:28:03,208 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:28:11,193 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 00:28:19,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:19,018 INFO L93 Difference]: Finished difference Result 39273 states and 44723 transitions. [2020-10-27 00:28:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:28:19,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 468 [2020-10-27 00:28:19,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:19,093 INFO L225 Difference]: With dead ends: 39273 [2020-10-27 00:28:19,093 INFO L226 Difference]: Without dead ends: 26214 [2020-10-27 00:28:19,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:28:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26214 states. [2020-10-27 00:28:19,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26214 to 24708. [2020-10-27 00:28:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24708 states. [2020-10-27 00:28:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24708 states to 24708 states and 27769 transitions. [2020-10-27 00:28:19,589 INFO L78 Accepts]: Start accepts. Automaton has 24708 states and 27769 transitions. Word has length 468 [2020-10-27 00:28:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:19,590 INFO L481 AbstractCegarLoop]: Abstraction has 24708 states and 27769 transitions. [2020-10-27 00:28:19,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:28:19,590 INFO L276 IsEmpty]: Start isEmpty. Operand 24708 states and 27769 transitions. [2020-10-27 00:28:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2020-10-27 00:28:19,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:19,639 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:19,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:28:19,639 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:19,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:19,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1917578422, now seen corresponding path program 1 times [2020-10-27 00:28:19,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:19,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716521780] [2020-10-27 00:28:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:20,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:24,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:24,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1158 [2020-10-27 00:28:24,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:28:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 00:28:24,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:28:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:28:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:25,179 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:28:25,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:25,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:25,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:25,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:25,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:25,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:28:25,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:25,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:25,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:25,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:25,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:28:25,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:25,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 00:28:25,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:25,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:25,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:25,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:25,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:28:25,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:28:25,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:25,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:28:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:25,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:25,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:28:25,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:28:25,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:25,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:25,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:28:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:25,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:25,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:28:25,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 00:28:25,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:28:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:26,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:26,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:26,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:26,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:28:26,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:28:26,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:28:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:26,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:28:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:26,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:26,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:26,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:28:26,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:28:26,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:28:26,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 00:28:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:26,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:26,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:28:26,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:26,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:28:26,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:26,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:26,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:28:26,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:26,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2020-10-27 00:28:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:26,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:26,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:28:26,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:26,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:28:26,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:28:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 478 proven. 140 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2020-10-27 00:28:27,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716521780] [2020-10-27 00:28:27,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:28:27,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:28:27,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24598349] [2020-10-27 00:28:27,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:28:27,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:27,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:28:27,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:27,240 INFO L87 Difference]: Start difference. First operand 24708 states and 27769 transitions. Second operand 7 states. [2020-10-27 00:28:27,413 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:28:33,042 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:28:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:41,554 INFO L93 Difference]: Finished difference Result 56737 states and 65902 transitions. [2020-10-27 00:28:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:28:41,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1132 [2020-10-27 00:28:41,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:41,654 INFO L225 Difference]: With dead ends: 56737 [2020-10-27 00:28:41,654 INFO L226 Difference]: Without dead ends: 33447 [2020-10-27 00:28:41,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 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 00:28:41,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33447 states. [2020-10-27 00:28:42,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33447 to 32687. [2020-10-27 00:28:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32687 states. [2020-10-27 00:28:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32687 states to 32687 states and 37445 transitions. [2020-10-27 00:28:42,307 INFO L78 Accepts]: Start accepts. Automaton has 32687 states and 37445 transitions. Word has length 1132 [2020-10-27 00:28:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:42,309 INFO L481 AbstractCegarLoop]: Abstraction has 32687 states and 37445 transitions. [2020-10-27 00:28:42,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:28:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 32687 states and 37445 transitions. [2020-10-27 00:28:42,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2020-10-27 00:28:42,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:42,378 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:42,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:28:42,379 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1643990778, now seen corresponding path program 1 times [2020-10-27 00:28:42,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:42,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803868982] [2020-10-27 00:28:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:47,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:47,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1226 [2020-10-27 00:28:47,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:28:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 00:28:47,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:28:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:28:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:48,150 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:28:48,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:48,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:48,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:48,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:48,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:28:48,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:48,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:48,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:48,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:48,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:48,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:28:48,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:28:48,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:48,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:48,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:48,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:28:48,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:28:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:48,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:28:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:48,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:48,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:48,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:28:48,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:28:48,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:48,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:28:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:48,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:48,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:48,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:28:48,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 00:28:48,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:28:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:48,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:48,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:28:48,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:28:48,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:28:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:49,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:28:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:49,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:49,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:28:49,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 00:28:49,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:49,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:28:49,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:49,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:28:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:49,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:49,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 00:28:49,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:49,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:28:49,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 00:28:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:49,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2020-10-27 00:28:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:49,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:49,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:28:49,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:49,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:28:49,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:28:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:49,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 542 proven. 176 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2020-10-27 00:28:49,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803868982] [2020-10-27 00:28:49,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:28:49,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:28:49,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920712751] [2020-10-27 00:28:49,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:28:49,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:49,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:28:49,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:49,971 INFO L87 Difference]: Start difference. First operand 32687 states and 37445 transitions. Second operand 7 states. [2020-10-27 00:28:55,193 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:28:57,818 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 00:29:03,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:03,622 INFO L93 Difference]: Finished difference Result 69073 states and 79340 transitions. [2020-10-27 00:29:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:03,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1200 [2020-10-27 00:29:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:03,726 INFO L225 Difference]: With dead ends: 69073 [2020-10-27 00:29:03,727 INFO L226 Difference]: Without dead ends: 37804 [2020-10-27 00:29:03,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 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 00:29:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37804 states. [2020-10-27 00:29:04,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37804 to 37699. [2020-10-27 00:29:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37699 states. [2020-10-27 00:29:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37699 states to 37699 states and 42815 transitions. [2020-10-27 00:29:04,486 INFO L78 Accepts]: Start accepts. Automaton has 37699 states and 42815 transitions. Word has length 1200 [2020-10-27 00:29:04,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:04,488 INFO L481 AbstractCegarLoop]: Abstraction has 37699 states and 42815 transitions. [2020-10-27 00:29:04,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:04,488 INFO L276 IsEmpty]: Start isEmpty. Operand 37699 states and 42815 transitions. [2020-10-27 00:29:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1208 [2020-10-27 00:29:04,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:04,512 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:04,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:29:04,518 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:04,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:04,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1989710359, now seen corresponding path program 1 times [2020-10-27 00:29:04,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:04,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366290602] [2020-10-27 00:29:04,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:05,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:06,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1233 [2020-10-27 00:29:10,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:29:10,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 00:29:10,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:29:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:29:10,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:10,238 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:29:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:10,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:10,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:29:10,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:10,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:10,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:29:10,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:10,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:29:10,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:10,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:29:10,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:10,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:29:10,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:10,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:10,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:10,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:10,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:29:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:10,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:29:10,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:10,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:29:10,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:10,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:29:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:10,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:29:10,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 00:29:10,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:29:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:11,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:11,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:11,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:11,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:29:11,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:29:11,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:29:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:11,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:29:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:11,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:11,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:11,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:29:11,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:29:11,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:29:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 00:29:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:11,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:11,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 00:29:11,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:11,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:29:11,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 00:29:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:11,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:11,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1077 [2020-10-27 00:29:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:11,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:11,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:29:11,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:11,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:29:11,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:29:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:11,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 542 proven. 176 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2020-10-27 00:29:12,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366290602] [2020-10-27 00:29:12,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:12,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:29:12,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274030958] [2020-10-27 00:29:12,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:12,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:12,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:12,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:12,289 INFO L87 Difference]: Start difference. First operand 37699 states and 42815 transitions. Second operand 7 states. [2020-10-27 00:29:16,364 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:29:19,748 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:29:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:32,441 INFO L93 Difference]: Finished difference Result 80514 states and 92056 transitions. [2020-10-27 00:29:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:32,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1207 [2020-10-27 00:29:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:32,556 INFO L225 Difference]: With dead ends: 80514 [2020-10-27 00:29:32,556 INFO L226 Difference]: Without dead ends: 44233 [2020-10-27 00:29:32,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:29:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44233 states. [2020-10-27 00:29:33,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44233 to 44128. [2020-10-27 00:29:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44128 states. [2020-10-27 00:29:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44128 states to 44128 states and 49722 transitions. [2020-10-27 00:29:33,674 INFO L78 Accepts]: Start accepts. Automaton has 44128 states and 49722 transitions. Word has length 1207 [2020-10-27 00:29:33,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:33,677 INFO L481 AbstractCegarLoop]: Abstraction has 44128 states and 49722 transitions. [2020-10-27 00:29:33,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:33,677 INFO L276 IsEmpty]: Start isEmpty. Operand 44128 states and 49722 transitions. [2020-10-27 00:29:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1338 [2020-10-27 00:29:33,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:33,716 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:33,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:29:33,717 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:33,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:33,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1305900152, now seen corresponding path program 1 times [2020-10-27 00:29:33,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:33,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985060223] [2020-10-27 00:29:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:34,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking...