/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem04_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:09:02,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:09:02,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:09:02,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:09:02,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:09:02,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:09:02,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:09:02,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:09:02,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:09:02,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:09:02,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:09:02,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:09:02,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:09:02,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:09:02,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:09:02,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:09:02,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:09:02,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:09:02,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:09:02,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:09:02,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:09:02,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:09:02,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:09:02,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:09:02,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:09:02,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:09:02,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:09:02,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:09:02,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:09:02,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:09:02,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:09:02,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:09:02,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:09:02,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:09:02,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:09:02,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:09:02,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:09:02,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:09:02,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:09:02,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:09:02,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:09:02,369 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 [2020-10-29 05:09:02,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:09:02,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:09:02,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:09:02,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:09:02,414 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:09:02,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:09:02,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:09:02,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:09:02,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:09:02,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:09:02,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:09:02,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:09:02,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:09:02,416 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:09:02,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:09:02,417 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:09:02,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:09:02,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:09:02,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:09:02,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:09:02,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:09:02,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:09:02,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:09:02,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:09:02,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:09:02,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:09:02,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:09:02,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:09:02,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:09:02,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:09:02,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:09:02,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:09:02,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:09:02,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:09:02,860 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:09:02,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label26.c [2020-10-29 05:09:02,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac837b9f5/3cfe242a06d44ec0a4787200a13b6826/FLAG9c563e08e [2020-10-29 05:09:04,032 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:09:04,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label26.c [2020-10-29 05:09:04,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac837b9f5/3cfe242a06d44ec0a4787200a13b6826/FLAG9c563e08e [2020-10-29 05:09:04,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac837b9f5/3cfe242a06d44ec0a4787200a13b6826 [2020-10-29 05:09:04,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:09:04,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:09:04,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:09:04,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:09:04,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:09:04,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:04" (1/1) ... [2020-10-29 05:09:04,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10dd5e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:04, skipping insertion in model container [2020-10-29 05:09:04,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:04" (1/1) ... [2020-10-29 05:09:04,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:09:04,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:09:06,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:09:06,088 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:09:06,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:09:06,752 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:09:06,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:06 WrapperNode [2020-10-29 05:09:06,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:09:06,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:09:06,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:09:06,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:09:06,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:06" (1/1) ... [2020-10-29 05:09:06,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:06" (1/1) ... [2020-10-29 05:09:06,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:06" (1/1) ... [2020-10-29 05:09:06,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:06" (1/1) ... [2020-10-29 05:09:06,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:06" (1/1) ... [2020-10-29 05:09:07,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:06" (1/1) ... [2020-10-29 05:09:07,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:06" (1/1) ... [2020-10-29 05:09:07,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:09:07,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:09:07,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:09:07,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:09:07,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:09:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:09:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:09:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:09:07,180 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:09:07,180 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:09:07,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:09:07,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:09:07,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:09:07,181 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:09:07,181 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:09:07,182 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:09:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:09:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:09:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:09:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:09:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:09:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:09:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:09:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:09:12,709 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:09:12,709 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:09:12,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:12 BoogieIcfgContainer [2020-10-29 05:09:12,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:09:12,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:09:12,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:09:12,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:09:12,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:09:04" (1/3) ... [2020-10-29 05:09:12,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4655d61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:12, skipping insertion in model container [2020-10-29 05:09:12,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:06" (2/3) ... [2020-10-29 05:09:12,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4655d61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:12, skipping insertion in model container [2020-10-29 05:09:12,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:12" (3/3) ... [2020-10-29 05:09:12,728 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label26.c [2020-10-29 05:09:12,741 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:09:12,748 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:09:12,763 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:09:12,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:09:12,802 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:09:12,803 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:09:12,803 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:09:12,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:09:12,803 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:09:12,803 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:09:12,803 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:09:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:09:12,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2020-10-29 05:09:12,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:12,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:09:12,890 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:12,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:12,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1911693056, now seen corresponding path program 1 times [2020-10-29 05:09:12,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:12,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846263875] [2020-10-29 05:09:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:18,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:18,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 797 [2020-10-29 05:09:18,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:18,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5178 [2020-10-29 05:09:18,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:18,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:09:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:09:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 788 [2020-10-29 05:09:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:09:20,117 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:09:20,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:09:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:20,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:20,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:20,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:09:20,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 05:09:20,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:20,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:09:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:09:20,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:09:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:09:21,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846263875] [2020-10-29 05:09:21,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:09:21,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:09:21,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975377805] [2020-10-29 05:09:21,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:09:21,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:09:21,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:09:21,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:09:21,073 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:09:21,253 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:09:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:09:32,978 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:09:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:09:32,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 781 [2020-10-29 05:09:32,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:09:33,025 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:09:33,025 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:09:33,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:09:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:09:33,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:09:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:09:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2742 transitions. [2020-10-29 05:09:33,255 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2742 transitions. Word has length 781 [2020-10-29 05:09:33,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:09:33,259 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2742 transitions. [2020-10-29 05:09:33,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:09:33,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2742 transitions. [2020-10-29 05:09:33,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2020-10-29 05:09:33,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:33,289 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:09:33,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:09:33,290 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:33,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:33,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1359158311, now seen corresponding path program 1 times [2020-10-29 05:09:33,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:33,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200512971] [2020-10-29 05:09:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:33,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:38,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:38,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 814 [2020-10-29 05:09:38,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:09:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 05:09:38,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:38,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:09:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:09:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 785 [2020-10-29 05:09:38,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:09:39,098 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:09:39,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:09:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:39,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:39,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:09:39,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:39,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:09:39,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:39,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:09:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:09:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:09:39,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:09:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:39,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:39,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:39,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:09:39,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:39,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:09:39,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:39,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:09:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:09:39,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:09:39,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200512971] [2020-10-29 05:09:39,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:09:39,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:09:39,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839350501] [2020-10-29 05:09:39,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:09:39,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:09:39,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:09:39,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:09:39,933 INFO L87 Difference]: Start difference. First operand 1690 states and 2742 transitions. Second operand 6 states. [2020-10-29 05:09:40,253 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:09:52,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:09:52,577 INFO L93 Difference]: Finished difference Result 4232 states and 7125 transitions. [2020-10-29 05:09:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:09:52,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 796 [2020-10-29 05:09:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:09:52,599 INFO L225 Difference]: With dead ends: 4232 [2020-10-29 05:09:52,599 INFO L226 Difference]: Without dead ends: 2548 [2020-10-29 05:09:52,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:09:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-29 05:09:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2544. [2020-10-29 05:09:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2544 states. [2020-10-29 05:09:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 3865 transitions. [2020-10-29 05:09:52,703 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 3865 transitions. Word has length 796 [2020-10-29 05:09:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:09:52,705 INFO L481 AbstractCegarLoop]: Abstraction has 2544 states and 3865 transitions. [2020-10-29 05:09:52,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:09:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 3865 transitions. [2020-10-29 05:09:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2020-10-29 05:09:52,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:52,743 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:09:52,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:09:52,744 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:52,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1913553207, now seen corresponding path program 1 times [2020-10-29 05:09:52,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:52,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996553542] [2020-10-29 05:09:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:53,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:57,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 874 [2020-10-29 05:09:57,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:09:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-29 05:09:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:57,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:09:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:09:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 05:09:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:58,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:09:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:58,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:58,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:58,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:09:58,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:09:58,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:58,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:09:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:09:58,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:58,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:09:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:58,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:58,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:58,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:09:58,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:58,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:09:58,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:58,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:09:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:09:58,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:58,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:09:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:58,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:58,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:09:58,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 05:09:58,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:58,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:09:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:09:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 05:09:58,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:09:58,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996553542] [2020-10-29 05:09:58,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:09:58,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:09:58,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757913404] [2020-10-29 05:09:58,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:09:58,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:09:58,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:09:58,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:09:58,939 INFO L87 Difference]: Start difference. First operand 2544 states and 3865 transitions. Second operand 7 states. [2020-10-29 05:10:01,935 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:10:12,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:12,897 INFO L93 Difference]: Finished difference Result 7808 states and 12272 transitions. [2020-10-29 05:10:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:10:12,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 854 [2020-10-29 05:10:12,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:12,933 INFO L225 Difference]: With dead ends: 7808 [2020-10-29 05:10:12,934 INFO L226 Difference]: Without dead ends: 5270 [2020-10-29 05:10:12,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:10:12,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5270 states. [2020-10-29 05:10:13,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5270 to 5167. [2020-10-29 05:10:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5167 states. [2020-10-29 05:10:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 7173 transitions. [2020-10-29 05:10:13,152 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 7173 transitions. Word has length 854 [2020-10-29 05:10:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:13,152 INFO L481 AbstractCegarLoop]: Abstraction has 5167 states and 7173 transitions. [2020-10-29 05:10:13,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:10:13,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 7173 transitions. [2020-10-29 05:10:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2020-10-29 05:10:13,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:13,174 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:10:13,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:10:13,174 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:13,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:13,175 INFO L82 PathProgramCache]: Analyzing trace with hash 2112935061, now seen corresponding path program 1 times [2020-10-29 05:10:13,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:13,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729855364] [2020-10-29 05:10:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:16,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:17,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:18,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:18,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 896 [2020-10-29 05:10:18,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:10:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-29 05:10:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:18,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:10:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-29 05:10:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 785 [2020-10-29 05:10:18,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:18,899 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:10:18,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:18,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:18,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:18,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:10:18,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:18,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:18,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:18,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:18,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:18,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:10:18,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:10:18,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:18,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:18,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 05:10:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:18,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:19,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:19,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:10:19,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 05:10:19,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:19,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:10:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 05:10:19,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729855364] [2020-10-29 05:10:19,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:10:19,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:10:19,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975389471] [2020-10-29 05:10:19,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:10:19,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:19,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:10:19,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:10:19,772 INFO L87 Difference]: Start difference. First operand 5167 states and 7173 transitions. Second operand 5 states. [2020-10-29 05:10:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:31,875 INFO L93 Difference]: Finished difference Result 15454 states and 21817 transitions. [2020-10-29 05:10:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:10:31,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 876 [2020-10-29 05:10:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:31,935 INFO L225 Difference]: With dead ends: 15454 [2020-10-29 05:10:31,936 INFO L226 Difference]: Without dead ends: 10293 [2020-10-29 05:10:31,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:10:31,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10293 states. [2020-10-29 05:10:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10293 to 10289. [2020-10-29 05:10:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10289 states. [2020-10-29 05:10:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 13344 transitions. [2020-10-29 05:10:32,301 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 13344 transitions. Word has length 876 [2020-10-29 05:10:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:32,303 INFO L481 AbstractCegarLoop]: Abstraction has 10289 states and 13344 transitions. [2020-10-29 05:10:32,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:10:32,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 13344 transitions. [2020-10-29 05:10:32,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2020-10-29 05:10:32,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:32,340 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:10:32,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:10:32,340 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:32,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1940179787, now seen corresponding path program 1 times [2020-10-29 05:10:32,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:32,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352929932] [2020-10-29 05:10:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:32,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:35,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:37,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:37,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 918 [2020-10-29 05:10:37,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:10:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 05:10:37,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:37,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:10:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 05:10:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 05:10:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:37,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:37,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:37,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:37,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:37,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:10:37,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:37,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:37,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:37,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:37,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:37,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:10:37,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:10:37,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:37,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:10:37,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:37,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 05:10:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:37,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:37,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:10:37,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:37,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 05:10:37,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:37,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:10:37,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:10:37,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 05:10:37,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:38,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 05:10:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:38,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:38,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:38,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:10:38,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:38,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:10:38,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:38,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:10:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 124 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 05:10:39,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352929932] [2020-10-29 05:10:39,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:10:39,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:10:39,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45892069] [2020-10-29 05:10:39,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:10:39,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:39,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:10:39,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:10:39,140 INFO L87 Difference]: Start difference. First operand 10289 states and 13344 transitions. Second operand 7 states. [2020-10-29 05:10:39,280 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:10:42,300 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:10:52,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:52,996 INFO L93 Difference]: Finished difference Result 30870 states and 40721 transitions. [2020-10-29 05:10:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 05:10:52,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 896 [2020-10-29 05:10:52,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:53,083 INFO L225 Difference]: With dead ends: 30870 [2020-10-29 05:10:53,083 INFO L226 Difference]: Without dead ends: 20587 [2020-10-29 05:10:53,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:10:53,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20587 states. [2020-10-29 05:10:53,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20587 to 20578. [2020-10-29 05:10:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20578 states. [2020-10-29 05:10:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20578 states to 20578 states and 25469 transitions. [2020-10-29 05:10:53,728 INFO L78 Accepts]: Start accepts. Automaton has 20578 states and 25469 transitions. Word has length 896 [2020-10-29 05:10:53,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:53,729 INFO L481 AbstractCegarLoop]: Abstraction has 20578 states and 25469 transitions. [2020-10-29 05:10:53,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:10:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 20578 states and 25469 transitions. [2020-10-29 05:10:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2020-10-29 05:10:53,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:53,786 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:10:53,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:10:53,786 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:53,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1741474339, now seen corresponding path program 1 times [2020-10-29 05:10:53,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:53,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717212312] [2020-10-29 05:10:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:53,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:56,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:59,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:59,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 924 [2020-10-29 05:10:59,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:10:59,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-29 05:10:59,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:59,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:10:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-29 05:10:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 785 [2020-10-29 05:10:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:59,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:59,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:59,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:59,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:10:59,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:59,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:59,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:59,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:59,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:59,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:59,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:59,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 05:10:59,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:59,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 05:10:59,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:59,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 05:10:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 121 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:11:00,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717212312] [2020-10-29 05:11:00,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:11:00,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:11:00,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508991326] [2020-10-29 05:11:00,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:11:00,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:00,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:11:00,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:11:00,543 INFO L87 Difference]: Start difference. First operand 20578 states and 25469 transitions. Second operand 5 states. [2020-10-29 05:11:12,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:12,460 INFO L93 Difference]: Finished difference Result 51233 states and 64749 transitions. [2020-10-29 05:11:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:11:12,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 906 [2020-10-29 05:11:12,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:12,578 INFO L225 Difference]: With dead ends: 51233 [2020-10-29 05:11:12,578 INFO L226 Difference]: Without dead ends: 30661 [2020-10-29 05:11:12,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:11:12,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30661 states. [2020-10-29 05:11:13,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30661 to 30657. [2020-10-29 05:11:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30657 states. [2020-10-29 05:11:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30657 states to 30657 states and 37111 transitions. [2020-10-29 05:11:13,339 INFO L78 Accepts]: Start accepts. Automaton has 30657 states and 37111 transitions. Word has length 906 [2020-10-29 05:11:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:13,341 INFO L481 AbstractCegarLoop]: Abstraction has 30657 states and 37111 transitions. [2020-10-29 05:11:13,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:11:13,342 INFO L276 IsEmpty]: Start isEmpty. Operand 30657 states and 37111 transitions. [2020-10-29 05:11:13,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-10-29 05:11:13,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:13,424 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:11:13,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:11:13,424 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:13,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:13,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1335887191, now seen corresponding path program 1 times [2020-10-29 05:11:13,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:13,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229892848] [2020-10-29 05:11:13,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:13,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:18,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:18,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 992 [2020-10-29 05:11:18,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:11:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 05:11:18,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:18,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-29 05:11:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 05:11:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:18,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:18,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:18,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:18,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:18,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:11:18,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:18,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:18,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:11:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:18,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:18,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:18,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:11:18,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:18,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:11:18,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:18,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:18,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:18,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:18,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:18,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 05:11:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:18,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:18,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:11:18,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:18,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:11:18,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:18,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:18,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 05:11:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:18,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:18,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:11:18,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 05:11:18,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:18,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 05:11:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:18,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 05:11:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:18,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:19,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:19,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:11:19,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:19,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 05:11:19,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:19,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:19,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:11:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 05:11:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 05:11:19,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229892848] [2020-10-29 05:11:19,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:11:19,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:11:19,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016186761] [2020-10-29 05:11:19,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:11:19,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:19,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:11:19,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:11:19,517 INFO L87 Difference]: Start difference. First operand 30657 states and 37111 transitions. Second operand 7 states. [2020-10-29 05:11:33,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:33,078 INFO L93 Difference]: Finished difference Result 61544 states and 74601 transitions. [2020-10-29 05:11:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:11:33,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 968 [2020-10-29 05:11:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:33,161 INFO L225 Difference]: With dead ends: 61544 [2020-10-29 05:11:33,161 INFO L226 Difference]: Without dead ends: 29207 [2020-10-29 05:11:33,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:11:33,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29207 states. [2020-10-29 05:11:33,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29207 to 28331. [2020-10-29 05:11:33,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28331 states. [2020-10-29 05:11:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28331 states to 28331 states and 31901 transitions. [2020-10-29 05:11:33,878 INFO L78 Accepts]: Start accepts. Automaton has 28331 states and 31901 transitions. Word has length 968 [2020-10-29 05:11:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:33,879 INFO L481 AbstractCegarLoop]: Abstraction has 28331 states and 31901 transitions. [2020-10-29 05:11:33,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:11:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 28331 states and 31901 transitions. [2020-10-29 05:11:33,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2020-10-29 05:11:33,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:33,931 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:11:33,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:11:33,931 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:33,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:33,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1287899383, now seen corresponding path program 1 times [2020-10-29 05:11:33,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:33,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221629133] [2020-10-29 05:11:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:34,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:39,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:39,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1104 [2020-10-29 05:11:39,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:11:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 05:11:39,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:39,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-29 05:11:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 05:11:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:39,393 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:11:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:39,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:39,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:39,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:39,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:11:39,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:39,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:39,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:11:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:39,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:39,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:11:39,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:39,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:11:39,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:39,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:11:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:39,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:39,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:11:39,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:39,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:11:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:39,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:39,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-29 05:11:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:39,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:39,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:11:39,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 05:11:39,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:39,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:11:39,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:39,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 05:11:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:39,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:39,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:39,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 05:11:39,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:39,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 05:11:39,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:39,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:11:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:11:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 05:11:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-29 05:11:41,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221629133] [2020-10-29 05:11:41,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:11:41,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:11:41,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179152753] [2020-10-29 05:11:41,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:11:41,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:41,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:11:41,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:11:41,572 INFO L87 Difference]: Start difference. First operand 28331 states and 31901 transitions. Second operand 7 states. [2020-10-29 05:11:42,016 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:11:49,297 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:11:58,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:58,915 INFO L93 Difference]: Finished difference Result 72433 states and 83947 transitions. [2020-10-29 05:11:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:11:58,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1080 [2020-10-29 05:11:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:59,212 INFO L225 Difference]: With dead ends: 72433 [2020-10-29 05:11:59,212 INFO L226 Difference]: Without dead ends: 44108 [2020-10-29 05:11:59,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:11:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44108 states. [2020-10-29 05:12:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44108 to 42078. [2020-10-29 05:12:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42078 states. [2020-10-29 05:12:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42078 states to 42078 states and 47128 transitions. [2020-10-29 05:12:00,176 INFO L78 Accepts]: Start accepts. Automaton has 42078 states and 47128 transitions. Word has length 1080 [2020-10-29 05:12:00,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:00,176 INFO L481 AbstractCegarLoop]: Abstraction has 42078 states and 47128 transitions. [2020-10-29 05:12:00,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:12:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 42078 states and 47128 transitions. [2020-10-29 05:12:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1246 [2020-10-29 05:12:00,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:00,237 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:12:00,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:12:00,239 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:00,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:00,240 INFO L82 PathProgramCache]: Analyzing trace with hash -925165560, now seen corresponding path program 1 times [2020-10-29 05:12:00,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:00,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788709021] [2020-10-29 05:12:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:00,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:00,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:05,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:05,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1269 [2020-10-29 05:12:05,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:12:05,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 05:12:05,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:05,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:12:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-29 05:12:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 346 [2020-10-29 05:12:05,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:05,745 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:12:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:12:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:05,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:12:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:12:05,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:05,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:05,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:12:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:05,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:05,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 05:12:05,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:05,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 05:12:05,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:05,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:05,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:12:05,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:05,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 05:12:05,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:05,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 05:12:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:06,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:06,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:12:06,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:12:06,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 05:12:06,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:06,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:12:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:12:06,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 05:12:06,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 05:12:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:06,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:06,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:06,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 05:12:06,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:12:06,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 05:12:06,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:06,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:12:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:12:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 05:12:06,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-29 05:12:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:06,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:06,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 05:12:06,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:06,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 05:12:06,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:06,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:12:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:12:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 05:12:06,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 724 proven. 161 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 05:12:07,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788709021] [2020-10-29 05:12:07,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:12:07,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 05:12:07,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578891043] [2020-10-29 05:12:07,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 05:12:07,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:07,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 05:12:07,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 05:12:07,845 INFO L87 Difference]: Start difference. First operand 42078 states and 47128 transitions. Second operand 9 states. [2020-10-29 05:12:08,125 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:12:09,325 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:12:19,629 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:12:28,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:12:28,478 INFO L93 Difference]: Finished difference Result 92068 states and 102774 transitions. [2020-10-29 05:12:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 05:12:28,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1245 [2020-10-29 05:12:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:12:28,607 INFO L225 Difference]: With dead ends: 92068 [2020-10-29 05:12:28,609 INFO L226 Difference]: Without dead ends: 49160 [2020-10-29 05:12:28,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:12:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49160 states. [2020-10-29 05:12:29,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49160 to 46516. [2020-10-29 05:12:29,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46516 states. [2020-10-29 05:12:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46516 states to 46516 states and 49927 transitions. [2020-10-29 05:12:29,477 INFO L78 Accepts]: Start accepts. Automaton has 46516 states and 49927 transitions. Word has length 1245 [2020-10-29 05:12:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:29,478 INFO L481 AbstractCegarLoop]: Abstraction has 46516 states and 49927 transitions. [2020-10-29 05:12:29,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 05:12:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 46516 states and 49927 transitions. [2020-10-29 05:12:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2020-10-29 05:12:29,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:29,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:12:29,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:12:29,546 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:29,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2078033639, now seen corresponding path program 1 times [2020-10-29 05:12:29,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:29,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573995763] [2020-10-29 05:12:29,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:29,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:30,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:30,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:34,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:34,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1334 [2020-10-29 05:12:34,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:12:34,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5160 [2020-10-29 05:12:34,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:34,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:12:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 05:12:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 336 [2020-10-29 05:12:34,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:35,254 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:12:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:12:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:35,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:35,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:12:35,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:12:35,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:35,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:12:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:35,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:35,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:35,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:12:35,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:12:35,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:35,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:12:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:12:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:12:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:35,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:35,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-29 05:12:35,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-29 05:12:35,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:35,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:12:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:12:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-29 05:12:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:12:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:36,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:36,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 05:12:36,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:36,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 05:12:36,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:36,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:12:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:12:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 05:12:36,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:36,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-29 05:12:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:36,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:36,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 05:12:36,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:36,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 05:12:36,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:36,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-29 05:12:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 537 proven. 175 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 05:12:37,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573995763] [2020-10-29 05:12:37,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:12:37,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:12:37,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549009304] [2020-10-29 05:12:37,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:12:37,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:37,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:12:37,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:12:37,836 INFO L87 Difference]: Start difference. First operand 46516 states and 49927 transitions. Second operand 8 states. [2020-10-29 05:12:38,181 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95