/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_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:06:25,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:06:25,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:06:25,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:06:25,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:06:25,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:06:25,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:06:25,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:06:25,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:06:25,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:06:25,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:06:25,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:06:25,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:06:25,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:06:25,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:06:25,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:06:25,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:06:25,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:06:25,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:06:25,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:06:25,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:06:25,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:06:25,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:06:25,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:06:25,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:06:25,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:06:25,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:06:25,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:06:25,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:06:25,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:06:25,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:06:25,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:06:25,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:06:25,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:06:25,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:06:25,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:06:25,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:06:25,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:06:25,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:06:25,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:06:25,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:06:25,412 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 16:06:25,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:06:25,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:06:25,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:06:25,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:06:25,467 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:06:25,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:06:25,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:06:25,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:06:25,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:06:25,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:06:25,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:06:25,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:06:25,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:06:25,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:06:25,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:06:25,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:06:25,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:06:25,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:06:25,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:06:25,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:06:25,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:06:25,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:06:25,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:06:25,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:06:25,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:06:25,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:06:25,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:06:25,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:06:25,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:06:25,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:06:25,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:06:25,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:06:25,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:06:25,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:06:25,903 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:06:25,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label59.c [2020-10-27 16:06:25,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ccb6b180/4a2a218b65044674bd0b662ddcb992c0/FLAG4a207aa30 [2020-10-27 16:06:27,098 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:06:27,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label59.c [2020-10-27 16:06:27,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ccb6b180/4a2a218b65044674bd0b662ddcb992c0/FLAG4a207aa30 [2020-10-27 16:06:27,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ccb6b180/4a2a218b65044674bd0b662ddcb992c0 [2020-10-27 16:06:27,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:06:27,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:06:27,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:06:27,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:06:27,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:06:27,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:06:27" (1/1) ... [2020-10-27 16:06:27,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187ad513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:27, skipping insertion in model container [2020-10-27 16:06:27,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:06:27" (1/1) ... [2020-10-27 16:06:27,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:06:27,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:06:29,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:06:29,190 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:06:30,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:06:30,059 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:06:30,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:30 WrapperNode [2020-10-27 16:06:30,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:06:30,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:06:30,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:06:30,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:06:30,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:30" (1/1) ... [2020-10-27 16:06:30,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:30" (1/1) ... [2020-10-27 16:06:30,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:30" (1/1) ... [2020-10-27 16:06:30,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:30" (1/1) ... [2020-10-27 16:06:30,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:30" (1/1) ... [2020-10-27 16:06:30,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:30" (1/1) ... [2020-10-27 16:06:30,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:30" (1/1) ... [2020-10-27 16:06:30,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:06:30,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:06:30,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:06:30,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:06:30,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:30" (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 16:06:30,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:06:30,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:06:30,441 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:06:30,441 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:06:30,441 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:06:30,441 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:06:30,442 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:06:30,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:06:30,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:06:30,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:06:30,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:06:30,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:06:30,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:06:30,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:06:30,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:06:30,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:06:30,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:06:30,444 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:06:30,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:06:30,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:06:30,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:06:30,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:06:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:06:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:06:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:06:35,756 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:06:35,757 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:06:35,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:06:35 BoogieIcfgContainer [2020-10-27 16:06:35,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:06:35,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:06:35,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:06:35,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:06:35,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:06:27" (1/3) ... [2020-10-27 16:06:35,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a754925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:06:35, skipping insertion in model container [2020-10-27 16:06:35,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:06:30" (2/3) ... [2020-10-27 16:06:35,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a754925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:06:35, skipping insertion in model container [2020-10-27 16:06:35,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:06:35" (3/3) ... [2020-10-27 16:06:35,772 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label59.c [2020-10-27 16:06:35,786 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:06:35,792 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:06:35,807 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:06:35,847 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:06:35,847 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:06:35,847 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:06:35,847 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:06:35,847 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:06:35,848 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:06:35,848 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:06:35,848 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:06:35,889 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 16:06:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2020-10-27 16:06:35,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:06:35,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:06:35,941 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:06:35,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:06:35,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1629783080, now seen corresponding path program 1 times [2020-10-27 16:06:35,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:06:35,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959653986] [2020-10-27 16:06:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:06:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:41,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:41,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:06:41,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 819 [2020-10-27 16:06:41,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:06:41,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-27 16:06:41,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:06:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:06:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:06:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 810 [2020-10-27 16:06:41,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:06:42,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:06:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:42,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:42,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:06:42,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:06:42,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:06:42,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 16:06:42,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:06:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:06:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:06:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:06:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:06:43,918 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 16:06:43,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959653986] [2020-10-27 16:06:43,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:06:43,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:06:43,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754732572] [2020-10-27 16:06:43,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:06:43,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:06:43,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:06:43,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:06:43,947 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-27 16:06:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:06:54,939 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-27 16:06:54,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:06:54,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 803 [2020-10-27 16:06:54,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:06:54,995 INFO L225 Difference]: With dead ends: 2677 [2020-10-27 16:06:54,996 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 16:06:55,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:06:55,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 16:06:55,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-27 16:06:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-27 16:06:55,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2956 transitions. [2020-10-27 16:06:55,183 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2956 transitions. Word has length 803 [2020-10-27 16:06:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:06:55,185 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 2956 transitions. [2020-10-27 16:06:55,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:06:55,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2956 transitions. [2020-10-27 16:06:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-27 16:06:55,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:06:55,217 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:06:55,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:06:55,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:06:55,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:06:55,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1918713107, now seen corresponding path program 1 times [2020-10-27 16:06:55,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:06:55,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607602466] [2020-10-27 16:06:55,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:06:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:55,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:00,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:00,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 830 [2020-10-27 16:07:00,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:07:00,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 16:07:00,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 16:07:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:07:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 718 [2020-10-27 16:07:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:07:03,931 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-27 16:07:04,077 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-27 16:07:04,235 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2020-10-27 16:07:04,420 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-27 16:07:04,618 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-10-27 16:07:04,855 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-10-27 16:07:05,064 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-10-27 16:07:05,264 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-10-27 16:07:05,476 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2020-10-27 16:07:05,689 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-10-27 16:07:06,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:07:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:07:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:06,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:07:06,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:07:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:07:06,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:07:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:07:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:07:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:07:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:07:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:07:06,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:06,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:06,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:07:06,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:07:06,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 16:07:06,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:07:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:07:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:07:06,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:07:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:07:12,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607602466] [2020-10-27 16:07:12,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:07:12,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 16:07:12,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274710409] [2020-10-27 16:07:12,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 16:07:12,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:07:12,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 16:07:12,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-27 16:07:12,815 INFO L87 Difference]: Start difference. First operand 1688 states and 2956 transitions. Second operand 19 states. [2020-10-27 16:07:13,246 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 16:07:13,508 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 16:07:18,330 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 16:07:21,315 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 16:07:21,653 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 16:07:22,774 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 16:07:26,026 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 139 [2020-10-27 16:07:29,861 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 16:07:30,138 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 16:07:31,842 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 130 [2020-10-27 16:07:35,459 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 121 [2020-10-27 16:07:38,183 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2020-10-27 16:07:38,607 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2020-10-27 16:07:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:07:40,962 INFO L93 Difference]: Finished difference Result 4094 states and 7351 transitions. [2020-10-27 16:07:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:07:40,963 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 812 [2020-10-27 16:07:40,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:07:40,979 INFO L225 Difference]: With dead ends: 4094 [2020-10-27 16:07:40,979 INFO L226 Difference]: Without dead ends: 2412 [2020-10-27 16:07:40,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2020-10-27 16:07:40,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2020-10-27 16:07:41,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2397. [2020-10-27 16:07:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2397 states. [2020-10-27 16:07:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3675 transitions. [2020-10-27 16:07:41,062 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3675 transitions. Word has length 812 [2020-10-27 16:07:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:07:41,064 INFO L481 AbstractCegarLoop]: Abstraction has 2397 states and 3675 transitions. [2020-10-27 16:07:41,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 16:07:41,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3675 transitions. [2020-10-27 16:07:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-27 16:07:41,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:07:41,097 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:07:41,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:07:41,097 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:07:41,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:07:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1949507494, now seen corresponding path program 1 times [2020-10-27 16:07:41,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:07:41,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860525912] [2020-10-27 16:07:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:07:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:07:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:42,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:46,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-27 16:07:46,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:07:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 16:07:46,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:07:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 16:07:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-27 16:07:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:07:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:07:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:07:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:47,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:47,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:07:47,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:07:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:07:47,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:47,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:07:47,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:07:47,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:07:47,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:07:47,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:07:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:07:47,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:07:47,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:07:47,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 16:07:47,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:07:47,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 16:07:47,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:07:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:07:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:07:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 16:07:47,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:07:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:07:50,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860525912] [2020-10-27 16:07:50,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:07:50,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:07:50,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878820061] [2020-10-27 16:07:50,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:07:50,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:07:50,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:07:50,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:07:50,611 INFO L87 Difference]: Start difference. First operand 2397 states and 3675 transitions. Second operand 5 states. [2020-10-27 16:07:50,889 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 16:08:03,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:08:03,052 INFO L93 Difference]: Finished difference Result 5589 states and 8924 transitions. [2020-10-27 16:08:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:08:03,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 813 [2020-10-27 16:08:03,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:08:03,068 INFO L225 Difference]: With dead ends: 5589 [2020-10-27 16:08:03,068 INFO L226 Difference]: Without dead ends: 2412 [2020-10-27 16:08:03,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:08:03,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2020-10-27 16:08:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2397. [2020-10-27 16:08:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2397 states. [2020-10-27 16:08:03,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 2844 transitions. [2020-10-27 16:08:03,156 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 2844 transitions. Word has length 813 [2020-10-27 16:08:03,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:08:03,156 INFO L481 AbstractCegarLoop]: Abstraction has 2397 states and 2844 transitions. [2020-10-27 16:08:03,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:08:03,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 2844 transitions. [2020-10-27 16:08:03,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-27 16:08:03,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:08:03,168 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:08:03,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:08:03,169 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:08:03,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:08:03,170 INFO L82 PathProgramCache]: Analyzing trace with hash -113251961, now seen corresponding path program 1 times [2020-10-27 16:08:03,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:08:03,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69545320] [2020-10-27 16:08:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:08:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:08:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:08:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:08:08,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:08:08,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-27 16:08:08,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:08:08,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 16:08:08,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:08:08,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 16:08:08,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 16:08:08,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-27 16:08:08,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:08:10,883 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-27 16:08:11,211 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 57 [2020-10-27 16:08:11,581 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 58 [2020-10-27 16:08:12,054 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 60 [2020-10-27 16:08:12,487 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 56 [2020-10-27 16:08:12,907 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 53 [2020-10-27 16:08:13,191 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 38 [2020-10-27 16:08:13,350 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-10-27 16:08:13,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:08:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:08:13,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:08:13,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:08:13,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:08:13,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:08:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:08:13,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:08:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:08:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:08:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:08:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:08:13,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:08:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:08:13,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:08:13,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:08:13,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 16:08:13,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:08:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 16:08:13,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:08:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:08:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:08:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:08:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:08:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:08:19,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69545320] [2020-10-27 16:08:19,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:08:19,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 16:08:19,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847951586] [2020-10-27 16:08:19,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 16:08:19,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:08:19,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 16:08:19,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-27 16:08:19,082 INFO L87 Difference]: Start difference. First operand 2397 states and 2844 transitions. Second operand 19 states. [2020-10-27 16:08:19,542 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 16:08:19,861 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 16:08:20,633 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 152 [2020-10-27 16:08:23,302 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 149 [2020-10-27 16:08:24,654 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 146 [2020-10-27 16:08:26,137 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 138 [2020-10-27 16:08:26,654 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 16:08:27,068 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2020-10-27 16:08:28,158 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-27 16:08:31,701 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 16:08:31,892 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 16:08:35,993 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 16:08:36,182 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 16:08:37,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:08:37,305 INFO L93 Difference]: Finished difference Result 5499 states and 6647 transitions. [2020-10-27 16:08:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:08:37,306 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 822 [2020-10-27 16:08:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:08:37,321 INFO L225 Difference]: With dead ends: 5499 [2020-10-27 16:08:37,321 INFO L226 Difference]: Without dead ends: 3108 [2020-10-27 16:08:37,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-27 16:08:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2020-10-27 16:08:37,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 3104. [2020-10-27 16:08:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3104 states. [2020-10-27 16:08:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 3564 transitions. [2020-10-27 16:08:37,412 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 3564 transitions. Word has length 822 [2020-10-27 16:08:37,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:08:37,414 INFO L481 AbstractCegarLoop]: Abstraction has 3104 states and 3564 transitions. [2020-10-27 16:08:37,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 16:08:37,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 3564 transitions. [2020-10-27 16:08:37,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-27 16:08:37,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:08:37,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:08:37,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:08:37,430 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:08:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:08:37,431 INFO L82 PathProgramCache]: Analyzing trace with hash -877896326, now seen corresponding path program 1 times [2020-10-27 16:08:37,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:08:37,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562863150] [2020-10-27 16:08:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:08:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:08:37,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:08:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:08:42,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:08:42,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 847 [2020-10-27 16:08:42,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:08:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 16:08:42,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:08:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:08:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 16:08:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-27 16:08:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:08:44,148 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-27 16:08:44,342 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-27 16:08:44,498 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-27 16:08:44,624 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-27 16:08:44,759 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-27 16:08:44,942 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-10-27 16:08:45,110 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-10-27 16:08:45,262 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-10-27 16:08:45,664 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-10-27 16:08:45,806 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2020-10-27 16:08:45,947 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:08:45,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:08:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:08:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:08:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:08:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:08:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:08:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:08:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:08:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:08:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:08:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:08:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:08:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:08:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:08:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:08:46,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:08:46,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 16:08:46,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:08:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 16:08:46,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:08:46,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:08:46,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:08:46,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 16:08:46,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:08:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:08:50,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562863150] [2020-10-27 16:08:50,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:08:50,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 16:08:50,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050474614] [2020-10-27 16:08:50,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 16:08:50,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:08:50,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 16:08:50,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-27 16:08:50,905 INFO L87 Difference]: Start difference. First operand 3104 states and 3564 transitions. Second operand 17 states. [2020-10-27 16:08:51,493 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 16:08:51,811 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 16:08:56,199 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 16:08:57,100 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 16:08:57,399 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 16:08:57,698 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 16:08:58,167 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 16:08:59,373 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 16:09:03,076 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 128 [2020-10-27 16:09:03,671 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 108 [2020-10-27 16:09:04,117 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 112 [2020-10-27 16:09:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:09:07,877 INFO L93 Difference]: Finished difference Result 6716 states and 7827 transitions. [2020-10-27 16:09:07,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 16:09:07,883 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 829 [2020-10-27 16:09:07,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:09:07,901 INFO L225 Difference]: With dead ends: 6716 [2020-10-27 16:09:07,901 INFO L226 Difference]: Without dead ends: 3547 [2020-10-27 16:09:07,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2020-10-27 16:09:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2020-10-27 16:09:07,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3543. [2020-10-27 16:09:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3543 states. [2020-10-27 16:09:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 4008 transitions. [2020-10-27 16:09:07,999 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 4008 transitions. Word has length 829 [2020-10-27 16:09:08,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:09:08,001 INFO L481 AbstractCegarLoop]: Abstraction has 3543 states and 4008 transitions. [2020-10-27 16:09:08,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 16:09:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 4008 transitions. [2020-10-27 16:09:08,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2020-10-27 16:09:08,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:09:08,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:09:08,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:09:08,017 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:09:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:09:08,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1307740449, now seen corresponding path program 1 times [2020-10-27 16:09:08,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:09:08,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655593568] [2020-10-27 16:09:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:09:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:08,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:08,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:13,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:13,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 852 [2020-10-27 16:09:13,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:09:13,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 16:09:13,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:13,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:09:13,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 16:09:13,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-27 16:09:13,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:14,843 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-27 16:09:14,985 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-27 16:09:15,102 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-27 16:09:15,354 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-27 16:09:15,551 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-10-27 16:09:15,740 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 34 [2020-10-27 16:09:15,952 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2020-10-27 16:09:16,104 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-10-27 16:09:16,290 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-10-27 16:09:16,497 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-10-27 16:09:16,748 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 38 [2020-10-27 16:09:16,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:09:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:16,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:16,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:09:16,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:09:16,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 16:09:16,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:09:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:09:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:09:16,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:16,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:09:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:16,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:16,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:16,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 16:09:16,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:09:16,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 16:09:16,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:09:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:09:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 16:09:16,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:09:21,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655593568] [2020-10-27 16:09:21,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:09:21,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 16:09:21,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190243490] [2020-10-27 16:09:21,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 16:09:21,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:09:21,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 16:09:21,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-27 16:09:21,638 INFO L87 Difference]: Start difference. First operand 3543 states and 4008 transitions. Second operand 17 states. [2020-10-27 16:09:22,152 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 16:09:22,420 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 16:09:24,194 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 16:09:27,104 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 16:09:27,380 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 16:09:29,285 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2020-10-27 16:09:29,938 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 123 [2020-10-27 16:09:31,505 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 121 [2020-10-27 16:09:33,210 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 16:09:33,499 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 16:09:34,429 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2020-10-27 16:09:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:09:36,982 INFO L93 Difference]: Finished difference Result 7593 states and 8716 transitions. [2020-10-27 16:09:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 16:09:36,987 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 834 [2020-10-27 16:09:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:09:37,004 INFO L225 Difference]: With dead ends: 7593 [2020-10-27 16:09:37,004 INFO L226 Difference]: Without dead ends: 3857 [2020-10-27 16:09:37,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-27 16:09:37,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3857 states. [2020-10-27 16:09:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3857 to 3853. [2020-10-27 16:09:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3853 states. [2020-10-27 16:09:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 4321 transitions. [2020-10-27 16:09:37,149 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 4321 transitions. Word has length 834 [2020-10-27 16:09:37,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:09:37,150 INFO L481 AbstractCegarLoop]: Abstraction has 3853 states and 4321 transitions. [2020-10-27 16:09:37,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 16:09:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 4321 transitions. [2020-10-27 16:09:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2020-10-27 16:09:37,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:09:37,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:09:37,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 16:09:37,169 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:09:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:09:37,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1296341961, now seen corresponding path program 1 times [2020-10-27 16:09:37,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:09:37,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905950352] [2020-10-27 16:09:37,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:09:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:42,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:42,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 864 [2020-10-27 16:09:42,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:09:42,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-27 16:09:42,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:42,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 16:09:42,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 16:09:42,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 689 [2020-10-27 16:09:42,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:43,335 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-27 16:09:43,448 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-27 16:09:44,356 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-27 16:09:44,661 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:09:44,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:09:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:44,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:09:44,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:09:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:09:44,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:09:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:09:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:09:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:44,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:09:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:44,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:44,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 16:09:44,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:09:44,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 16:09:44,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:44,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:09:44,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:09:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 16:09:44,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:09:49,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905950352] [2020-10-27 16:09:49,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:09:49,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 16:09:49,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819739553] [2020-10-27 16:09:49,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 16:09:49,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:09:49,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 16:09:49,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-27 16:09:49,705 INFO L87 Difference]: Start difference. First operand 3853 states and 4321 transitions. Second operand 19 states. [2020-10-27 16:09:50,342 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 16:09:50,595 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 16:09:53,399 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 16:09:54,517 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 16:09:56,372 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 16:09:56,607 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 16:10:01,616 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 16:10:01,882 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 16:10:03,214 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 16:10:04,387 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 118 [2020-10-27 16:10:05,641 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 16:10:07,852 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 16:10:08,077 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 110