/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:59:58,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:59:58,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:59:58,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:59:58,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:59:58,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:59:58,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:59:58,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:59:58,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:59:58,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:59:58,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:59:58,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:59:58,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:59:58,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:59:58,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:59:58,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:59:58,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:59:58,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:59:58,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:59:58,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:59:58,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:59:58,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:59:58,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:59:58,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:59:58,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:59:58,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:59:58,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:59:58,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:59:58,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:59:58,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:59:58,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:59:58,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:59:58,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:59:58,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:59:58,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:59:58,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:59:58,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:59:58,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:59:58,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:59:58,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:59:58,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:59:58,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 15:59:58,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:59:58,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:59:58,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:59:58,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:59:58,507 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:59:58,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:59:58,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:59:58,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:59:58,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:59:58,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:59:58,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:59:58,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:59:58,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:59:58,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:59:58,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:59:58,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:59:58,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:59:58,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:59:58,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:59:58,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:59:58,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:59:58,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:59:58,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:59:58,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:59:58,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:59:58,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:59:58,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:59:58,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:59:58,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:59:58,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:59:58,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:59:59,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:59:59,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:59:59,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:59:59,023 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:59:59,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label35.c [2020-10-27 15:59:59,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42457ddfe/32364bab02d84b30958ca9903fe38ee1/FLAG3ec19806e [2020-10-27 16:00:00,072 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:00:00,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label35.c [2020-10-27 16:00:00,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42457ddfe/32364bab02d84b30958ca9903fe38ee1/FLAG3ec19806e [2020-10-27 16:00:00,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42457ddfe/32364bab02d84b30958ca9903fe38ee1 [2020-10-27 16:00:00,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:00:00,143 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:00:00,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:00:00,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:00:00,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:00:00,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:00:00" (1/1) ... [2020-10-27 16:00:00,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4118f9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:00, skipping insertion in model container [2020-10-27 16:00:00,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:00:00" (1/1) ... [2020-10-27 16:00:00,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:00:00,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:00:01,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:00:02,010 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:00:02,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:00:02,877 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:00:02,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:02 WrapperNode [2020-10-27 16:00:02,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:00:02,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:00:02,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:00:02,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:00:02,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:02" (1/1) ... [2020-10-27 16:00:02,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:02" (1/1) ... [2020-10-27 16:00:03,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:02" (1/1) ... [2020-10-27 16:00:03,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:02" (1/1) ... [2020-10-27 16:00:03,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:02" (1/1) ... [2020-10-27 16:00:03,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:02" (1/1) ... [2020-10-27 16:00:03,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:02" (1/1) ... [2020-10-27 16:00:03,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:00:03,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:00:03,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:00:03,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:00:03,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:00:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:00:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:00:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:00:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:00:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:00:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:00:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:00:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:00:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:00:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:00:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:00:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:00:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:00:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:00:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:00:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:00:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:00:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:00:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:00:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:00:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:00:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:00:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:00:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:00:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:00:09,016 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:00:09,017 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:00:09,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:00:09 BoogieIcfgContainer [2020-10-27 16:00:09,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:00:09,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:00:09,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:00:09,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:00:09,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:00:00" (1/3) ... [2020-10-27 16:00:09,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78efea21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:00:09, skipping insertion in model container [2020-10-27 16:00:09,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:02" (2/3) ... [2020-10-27 16:00:09,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78efea21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:00:09, skipping insertion in model container [2020-10-27 16:00:09,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:00:09" (3/3) ... [2020-10-27 16:00:09,032 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label35.c [2020-10-27 16:00:09,047 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:00:09,054 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:00:09,068 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:00:09,107 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:00:09,107 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:00:09,107 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:00:09,107 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:00:09,107 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:00:09,108 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:00:09,108 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:00:09,108 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:00:09,147 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 16:00:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2020-10-27 16:00:09,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:00:09,295 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, 1, 1, 1, 1, 1] [2020-10-27 16:00:09,296 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:00:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:00:09,311 INFO L82 PathProgramCache]: Analyzing trace with hash 2029485084, now seen corresponding path program 1 times [2020-10-27 16:00:09,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:00:09,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181434882] [2020-10-27 16:00:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:00:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:10,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 802 [2020-10-27 16:00:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 16:00:15,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:00:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:00:15,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 793 [2020-10-27 16:00:15,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:00:16,108 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:00:16,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:00:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:16,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:16,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:16,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:00:16,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 16:00:16,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:00:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:00:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:00:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:00:16,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181434882] [2020-10-27 16:00:16,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:00:16,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:00:16,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245599836] [2020-10-27 16:00:16,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:00:16,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:00:16,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:00:16,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:00:16,862 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-27 16:00:17,081 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:00:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:00:27,894 INFO L93 Difference]: Finished difference Result 2677 states and 5140 transitions. [2020-10-27 16:00:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:00:27,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 786 [2020-10-27 16:00:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:00:27,939 INFO L225 Difference]: With dead ends: 2677 [2020-10-27 16:00:27,939 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 16:00:27,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:00:27,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 16:00:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2020-10-27 16:00:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-27 16:00:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2781 transitions. [2020-10-27 16:00:28,148 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2781 transitions. Word has length 786 [2020-10-27 16:00:28,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:00:28,152 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2781 transitions. [2020-10-27 16:00:28,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:00:28,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2781 transitions. [2020-10-27 16:00:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2020-10-27 16:00:28,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:00:28,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:00:28,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:00:28,185 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:00:28,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:00:28,187 INFO L82 PathProgramCache]: Analyzing trace with hash 407290909, now seen corresponding path program 1 times [2020-10-27 16:00:28,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:00:28,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810064075] [2020-10-27 16:00:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:00:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-27 16:00:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:00:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-27 16:00:33,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:00:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 16:00:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 790 [2020-10-27 16:00:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 16:00:34,163 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:00:34,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:00:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:34,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:34,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:00:34,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:34,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:00:34,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:00:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:00:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 16:00:34,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:00:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:34,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:34,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 16:00:34,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 16:00:34,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:00:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 16:00:34,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:00:35,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810064075] [2020-10-27 16:00:35,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:00:35,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:00:35,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847117671] [2020-10-27 16:00:35,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:00:35,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:00:35,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:00:35,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:00:35,180 INFO L87 Difference]: Start difference. First operand 1699 states and 2781 transitions. Second operand 6 states. [2020-10-27 16:00:35,315 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:00:35,893 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:00:51,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:00:51,860 INFO L93 Difference]: Finished difference Result 6778 states and 11265 transitions. [2020-10-27 16:00:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:00:51,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 797 [2020-10-27 16:00:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:00:51,900 INFO L225 Difference]: With dead ends: 6778 [2020-10-27 16:00:51,901 INFO L226 Difference]: Without dead ends: 5085 [2020-10-27 16:00:51,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:00:51,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2020-10-27 16:00:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 5079. [2020-10-27 16:00:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5079 states. [2020-10-27 16:00:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 7452 transitions. [2020-10-27 16:00:52,093 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 7452 transitions. Word has length 797 [2020-10-27 16:00:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:00:52,094 INFO L481 AbstractCegarLoop]: Abstraction has 5079 states and 7452 transitions. [2020-10-27 16:00:52,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:00:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 7452 transitions. [2020-10-27 16:00:52,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2020-10-27 16:00:52,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:00:52,140 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-27 16:00:52,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:00:52,140 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:00:52,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:00:52,142 INFO L82 PathProgramCache]: Analyzing trace with hash 692661466, now seen corresponding path program 1 times [2020-10-27 16:00:52,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:00:52,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387680810] [2020-10-27 16:00:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:00:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:52,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:57,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:57,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 868 [2020-10-27 16:00:57,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 16:00:57,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-27 16:00:57,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:00:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 16:00:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 16:00:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:57,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:00:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:57,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:57,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:00:57,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:00:57,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:00:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:00:57,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:57,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:00:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:57,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:57,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:57,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:00:57,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:57,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 16:00:57,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:00:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:00:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:57,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 16:00:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:57,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:57,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:00:57,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:57,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 16:00:57,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:00:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:00:57,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 16:00:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:57,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:57,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:57,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 16:00:57,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:57,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 16:00:57,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:00:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:00:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 16:00:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 16:00:58,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387680810] [2020-10-27 16:00:58,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:00:58,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:00:58,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918210695] [2020-10-27 16:00:58,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:00:58,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:00:58,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:00:58,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:00:58,094 INFO L87 Difference]: Start difference. First operand 5079 states and 7452 transitions. Second operand 7 states. [2020-10-27 16:00:58,491 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:01:06,807 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:01:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:01:12,112 INFO L93 Difference]: Finished difference Result 10281 states and 15113 transitions. [2020-10-27 16:01:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:01:12,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 846 [2020-10-27 16:01:12,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:01:12,153 INFO L225 Difference]: With dead ends: 10281 [2020-10-27 16:01:12,153 INFO L226 Difference]: Without dead ends: 5208 [2020-10-27 16:01:12,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:01:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2020-10-27 16:01:12,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 5186. [2020-10-27 16:01:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5186 states. [2020-10-27 16:01:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 6842 transitions. [2020-10-27 16:01:12,318 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 6842 transitions. Word has length 846 [2020-10-27 16:01:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:01:12,319 INFO L481 AbstractCegarLoop]: Abstraction has 5186 states and 6842 transitions. [2020-10-27 16:01:12,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:01:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 6842 transitions. [2020-10-27 16:01:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2020-10-27 16:01:12,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:01:12,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:01:12,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:01:12,338 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:01:12,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:01:12,339 INFO L82 PathProgramCache]: Analyzing trace with hash 697503666, now seen corresponding path program 1 times [2020-10-27 16:01:12,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:01:12,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125387642] [2020-10-27 16:01:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:01:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:15,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:17,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:17,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 866 [2020-10-27 16:01:17,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:01:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 16:01:17,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 16:01:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 16:01:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 751 [2020-10-27 16:01:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:18,769 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-27 16:01:19,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:01:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:19,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:19,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:19,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:01:19,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:01:19,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:19,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:01:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:19,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:19,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:19,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 16:01:19,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:19,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 16:01:19,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:19,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:01:19,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:19,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 16:01:19,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:01:25,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125387642] [2020-10-27 16:01:25,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:01:25,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 16:01:25,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28952923] [2020-10-27 16:01:25,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 16:01:25,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:01:25,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 16:01:25,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-10-27 16:01:25,885 INFO L87 Difference]: Start difference. First operand 5186 states and 6842 transitions. Second operand 19 states. [2020-10-27 16:01:26,538 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 16:01:26,762 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 16:01:31,662 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 16:01:31,912 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 16:01:34,908 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 16:01:37,221 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 16:01:37,443 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 16:01:37,952 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 16:01:40,858 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 16:01:42,691 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 16:01:42,946 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 16:01:43,166 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 16:01:44,531 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 16:01:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:01:45,089 INFO L93 Difference]: Finished difference Result 11114 states and 14703 transitions. [2020-10-27 16:01:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:01:45,090 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 848 [2020-10-27 16:01:45,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:01:45,120 INFO L225 Difference]: With dead ends: 11114 [2020-10-27 16:01:45,120 INFO L226 Difference]: Without dead ends: 5934 [2020-10-27 16:01:45,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2020-10-27 16:01:45,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2020-10-27 16:01:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5928. [2020-10-27 16:01:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5928 states. [2020-10-27 16:01:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5928 states to 5928 states and 7598 transitions. [2020-10-27 16:01:45,273 INFO L78 Accepts]: Start accepts. Automaton has 5928 states and 7598 transitions. Word has length 848 [2020-10-27 16:01:45,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:01:45,275 INFO L481 AbstractCegarLoop]: Abstraction has 5928 states and 7598 transitions. [2020-10-27 16:01:45,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 16:01:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states and 7598 transitions. [2020-10-27 16:01:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2020-10-27 16:01:45,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:01:45,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:01:45,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:01:45,297 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:01:45,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:01:45,298 INFO L82 PathProgramCache]: Analyzing trace with hash 793558220, now seen corresponding path program 1 times [2020-10-27 16:01:45,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:01:45,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581164040] [2020-10-27 16:01:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:01:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:50,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:50,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 896 [2020-10-27 16:01:50,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:01:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 16:01:50,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:01:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 16:01:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 790 [2020-10-27 16:01:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:50,806 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:01:50,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:01:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:50,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:50,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:50,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:01:50,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:01:50,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:01:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:50,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:50,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:01:50,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:01:50,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:50,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 16:01:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:50,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:50,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 16:01:50,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:50,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 16:01:50,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:01:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 16:01:50,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 16:01:51,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581164040] [2020-10-27 16:01:51,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:01:51,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:01:51,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3281872] [2020-10-27 16:01:51,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:01:51,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:01:51,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:01:51,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:01:51,704 INFO L87 Difference]: Start difference. First operand 5928 states and 7598 transitions. Second operand 6 states. [2020-10-27 16:01:51,841 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:02:04,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:02:04,442 INFO L93 Difference]: Finished difference Result 16989 states and 22310 transitions. [2020-10-27 16:02:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:02:04,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 876 [2020-10-27 16:02:04,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:02:04,507 INFO L225 Difference]: With dead ends: 16989 [2020-10-27 16:02:04,507 INFO L226 Difference]: Without dead ends: 11067 [2020-10-27 16:02:04,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:02:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11067 states. [2020-10-27 16:02:04,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11067 to 11063. [2020-10-27 16:02:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11063 states. [2020-10-27 16:02:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11063 states to 11063 states and 14276 transitions. [2020-10-27 16:02:04,824 INFO L78 Accepts]: Start accepts. Automaton has 11063 states and 14276 transitions. Word has length 876 [2020-10-27 16:02:04,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:02:04,826 INFO L481 AbstractCegarLoop]: Abstraction has 11063 states and 14276 transitions. [2020-10-27 16:02:04,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:02:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 11063 states and 14276 transitions. [2020-10-27 16:02:04,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2020-10-27 16:02:04,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:02:04,866 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, 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] [2020-10-27 16:02:04,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:02:04,867 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:02:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:02:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash 727239747, now seen corresponding path program 1 times [2020-10-27 16:02:04,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:02:04,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982261484] [2020-10-27 16:02:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:02:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:05,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:06,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:09,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:09,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:09,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 903 [2020-10-27 16:02:09,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:02:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 16:02:09,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:02:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-27 16:02:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 670 [2020-10-27 16:02:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:13,413 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-10-27 16:02:13,673 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-27 16:02:14,036 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2020-10-27 16:02:14,253 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-10-27 16:02:14,524 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-27 16:02:14,766 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-10-27 16:02:15,048 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 47 [2020-10-27 16:02:15,309 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 44 [2020-10-27 16:02:15,547 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 39 [2020-10-27 16:02:15,685 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:02:15,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:02:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:15,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:15,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:15,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:02:15,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:02:15,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:02:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:02:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:15,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:02:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:15,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:15,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:15,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:02:15,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:15,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:02:15,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:02:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:02:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:15,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 16:02:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:15,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:15,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 16:02:15,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 16:02:15,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:02:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 16:02:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 16:02:25,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982261484] [2020-10-27 16:02:25,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:02:25,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 16:02:25,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639885767] [2020-10-27 16:02:25,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 16:02:25,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:02:25,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 16:02:25,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-27 16:02:25,201 INFO L87 Difference]: Start difference. First operand 11063 states and 14276 transitions. Second operand 17 states. [2020-10-27 16:02:26,991 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 16:02:27,342 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-27 16:02:35,431 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 16:02:35,780 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-27 16:02:41,611 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 153 [2020-10-27 16:02:43,479 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 150 [2020-10-27 16:02:45,827 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 16:02:46,166 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 16:02:46,997 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 139 [2020-10-27 16:02:52,559 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 136 [2020-10-27 16:02:53,461 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2020-10-27 16:02:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:02:56,983 INFO L93 Difference]: Finished difference Result 22787 states and 29465 transitions. [2020-10-27 16:02:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 16:02:56,985 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 883 [2020-10-27 16:02:56,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:02:57,022 INFO L225 Difference]: With dead ends: 22787 [2020-10-27 16:02:57,023 INFO L226 Difference]: Without dead ends: 11730 [2020-10-27 16:02:57,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-27 16:02:57,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11730 states. [2020-10-27 16:02:57,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11730 to 11726. [2020-10-27 16:02:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11726 states. [2020-10-27 16:02:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11726 states to 11726 states and 14951 transitions. [2020-10-27 16:02:57,381 INFO L78 Accepts]: Start accepts. Automaton has 11726 states and 14951 transitions. Word has length 883 [2020-10-27 16:02:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:02:57,382 INFO L481 AbstractCegarLoop]: Abstraction has 11726 states and 14951 transitions. [2020-10-27 16:02:57,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 16:02:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 11726 states and 14951 transitions. [2020-10-27 16:02:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2020-10-27 16:02:57,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:02:57,420 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:02:57,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 16:02:57,420 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:02:57,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:02:57,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1793559253, now seen corresponding path program 1 times [2020-10-27 16:02:57,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:02:57,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183915832] [2020-10-27 16:02:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:02:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:57,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:02,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:02,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 953 [2020-10-27 16:03:02,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 16:03:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 16:03:02,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:03:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-27 16:03:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 16:03:02,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:02,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:03:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:02,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:02,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:02,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:03:02,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:03:02,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:02,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:02,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:03:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:02,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:02,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:02,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:03:02,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:02,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:03:02,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:02,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:02,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 16:03:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:02,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:02,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:02,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 16:03:02,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 16:03:02,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 16:03:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:02,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:02,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:02,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 16:03:02,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:02,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:03:02,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:02,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:03:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 16:03:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:02,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 16:03:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:02,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:02,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:02,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 16:03:02,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 16:03:02,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:03:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:03:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 16:03:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 16:03:03,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183915832] [2020-10-27 16:03:03,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:03:03,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:03:03,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997978162] [2020-10-27 16:03:03,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:03:03,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:03:03,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:03:03,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:03:03,401 INFO L87 Difference]: Start difference. First operand 11726 states and 14951 transitions. Second operand 7 states. [2020-10-27 16:03:03,540 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:03:08,143 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:03:18,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:03:18,005 INFO L93 Difference]: Finished difference Result 33735 states and 44336 transitions. [2020-10-27 16:03:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 16:03:18,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 929 [2020-10-27 16:03:18,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:03:18,093 INFO L225 Difference]: With dead ends: 33735 [2020-10-27 16:03:18,093 INFO L226 Difference]: Without dead ends: 22015 [2020-10-27 16:03:18,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:03:18,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22015 states. [2020-10-27 16:03:18,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22015 to 18604. [2020-10-27 16:03:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18604 states. [2020-10-27 16:03:18,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18604 states to 18604 states and 23276 transitions. [2020-10-27 16:03:18,589 INFO L78 Accepts]: Start accepts. Automaton has 18604 states and 23276 transitions. Word has length 929 [2020-10-27 16:03:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:03:18,589 INFO L481 AbstractCegarLoop]: Abstraction has 18604 states and 23276 transitions. [2020-10-27 16:03:18,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:03:18,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18604 states and 23276 transitions. [2020-10-27 16:03:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-27 16:03:18,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:03:18,665 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:03:18,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 16:03:18,666 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:03:18,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:03:18,666 INFO L82 PathProgramCache]: Analyzing trace with hash -955766502, now seen corresponding path program 1 times [2020-10-27 16:03:18,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:03:18,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536683412] [2020-10-27 16:03:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:03:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:23,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:23,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-27 16:03:23,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:03:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 16:03:23,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:03:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 236 [2020-10-27 16:03:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 664 [2020-10-27 16:03:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:25,420 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-27 16:03:25,536 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-27 16:03:25,660 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-27 16:03:25,989 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-27 16:03:26,133 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-27 16:03:26,290 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-10-27 16:03:26,819 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:03:26,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:03:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:26,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:26,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:03:26,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:26,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:03:26,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:26,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:26,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:03:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:26,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:26,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:03:26,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:26,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:03:26,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:26,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 16:03:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:26,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:26,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 16:03:26,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:26,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 16:03:26,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:26,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 16:03:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:27,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:27,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 16:03:27,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 16:03:27,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:03:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 16:03:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 216 proven. 3 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-27 16:03:33,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536683412] [2020-10-27 16:03:33,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:03:33,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 16:03:33,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789862099] [2020-10-27 16:03:33,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 16:03:33,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:03:33,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 16:03:33,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-27 16:03:33,988 INFO L87 Difference]: Start difference. First operand 18604 states and 23276 transitions. Second operand 17 states. [2020-10-27 16:03:36,603 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 16:03:36,871 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 126