/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/Problem05_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:17:32,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:17:32,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:17:32,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:17:32,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:17:32,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:17:32,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:17:32,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:17:32,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:17:32,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:17:32,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:17:32,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:17:32,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:17:32,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:17:32,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:17:32,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:17:32,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:17:32,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:17:32,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:17:32,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:17:32,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:17:32,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:17:32,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:17:32,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:17:32,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:17:32,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:17:32,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:17:32,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:17:32,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:17:32,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:17:32,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:17:32,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:17:32,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:17:32,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:17:32,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:17:32,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:17:32,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:17:32,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:17:32,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:17:32,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:17:32,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:17:32,334 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 16:17:32,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:17:32,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:17:32,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:17:32,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:17:32,400 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:17:32,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:17:32,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:17:32,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:17:32,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:17:32,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:17:32,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:17:32,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:17:32,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:17:32,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:17:32,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:17:32,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:17:32,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:17:32,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:17:32,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:17:32,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:17:32,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:17:32,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:17:32,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:17:32,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:17:32,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:17:32,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:17:32,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:17:32,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:17:32,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:17:32,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:17:32,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:17:32,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:17:32,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:17:32,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:17:32,897 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:17:32,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label40.c [2020-10-27 16:17:32,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dfc99339/b325bc268e66495ca071d167db7f5df7/FLAG8422ab1dd [2020-10-27 16:17:34,312 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:17:34,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label40.c [2020-10-27 16:17:34,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dfc99339/b325bc268e66495ca071d167db7f5df7/FLAG8422ab1dd [2020-10-27 16:17:34,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dfc99339/b325bc268e66495ca071d167db7f5df7 [2020-10-27 16:17:34,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:17:34,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:17:34,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:17:34,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:17:34,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:17:34,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:17:34" (1/1) ... [2020-10-27 16:17:34,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5f349d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:34, skipping insertion in model container [2020-10-27 16:17:34,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:17:34" (1/1) ... [2020-10-27 16:17:34,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:17:34,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:17:37,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:17:37,263 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:17:38,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:17:38,792 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:17:38,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:38 WrapperNode [2020-10-27 16:17:38,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:17:38,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:17:38,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:17:38,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:17:38,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:38" (1/1) ... [2020-10-27 16:17:38,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:38" (1/1) ... [2020-10-27 16:17:38,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:38" (1/1) ... [2020-10-27 16:17:38,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:38" (1/1) ... [2020-10-27 16:17:39,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:38" (1/1) ... [2020-10-27 16:17:39,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:38" (1/1) ... [2020-10-27 16:17:39,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:38" (1/1) ... [2020-10-27 16:17:39,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:17:39,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:17:39,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:17:39,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:17:39,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:38" (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 16:17:39,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:17:39,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:17:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:17:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:17:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:17:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:17:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:17:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:17:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:17:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:17:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:17:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:17:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:17:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:17:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:17:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:17:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:17:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:17:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:17:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:17:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:17:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:17:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:17:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:17:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:17:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:17:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:17:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:17:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:17:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:17:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:17:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:17:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:17:49,550 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:17:49,551 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:17:49,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:17:49 BoogieIcfgContainer [2020-10-27 16:17:49,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:17:49,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:17:49,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:17:49,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:17:49,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:17:34" (1/3) ... [2020-10-27 16:17:49,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ac9d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:17:49, skipping insertion in model container [2020-10-27 16:17:49,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:38" (2/3) ... [2020-10-27 16:17:49,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ac9d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:17:49, skipping insertion in model container [2020-10-27 16:17:49,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:17:49" (3/3) ... [2020-10-27 16:17:49,566 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40.c [2020-10-27 16:17:49,578 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:17:49,585 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:17:49,598 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:17:49,635 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:17:49,636 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:17:49,636 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:17:49,636 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:17:49,636 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:17:49,636 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:17:49,636 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:17:49,636 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:17:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:17:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1673 [2020-10-27 16:17:49,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:17:49,830 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:17:49,831 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:17:49,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:17:49,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1875713063, now seen corresponding path program 1 times [2020-10-27 16:17:49,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:17:49,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839001223] [2020-10-27 16:17:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:17:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:17:51,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:17:56,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:17:56,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1696 [2020-10-27 16:17:56,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:17:56,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5326 [2020-10-27 16:17:56,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:17:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:17:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:17:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1687 [2020-10-27 16:17:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:17:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:17:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:17:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:17:58,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:17:58,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:17:58,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:17:58,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 16:17:58,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:17:58,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:17:58,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:17:58,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:17:58,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:01,262 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 16:18:01,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839001223] [2020-10-27 16:18:01,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:18:01,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:18:01,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026932041] [2020-10-27 16:18:01,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:18:01,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:18:01,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:18:01,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:18:01,297 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-27 16:18:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:18:24,754 INFO L93 Difference]: Finished difference Result 6316 states and 11857 transitions. [2020-10-27 16:18:24,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:18:24,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1672 [2020-10-27 16:18:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:18:24,822 INFO L225 Difference]: With dead ends: 6316 [2020-10-27 16:18:24,822 INFO L226 Difference]: Without dead ends: 4026 [2020-10-27 16:18:24,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:18:24,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2020-10-27 16:18:25,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997. [2020-10-27 16:18:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-27 16:18:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions. [2020-10-27 16:18:25,066 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1672 [2020-10-27 16:18:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:18:25,071 INFO L481 AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions. [2020-10-27 16:18:25,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:18:25,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions. [2020-10-27 16:18:25,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1682 [2020-10-27 16:18:25,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:18:25,348 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:25,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:18:25,348 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:18:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:18:25,350 INFO L82 PathProgramCache]: Analyzing trace with hash 211555875, now seen corresponding path program 1 times [2020-10-27 16:18:25,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:18:25,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931310430] [2020-10-27 16:18:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:18:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:30,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:30,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1707 [2020-10-27 16:18:30,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:18:30,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 16:18:30,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:18:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:18:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1684 [2020-10-27 16:18:30,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:18:32,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:18:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:32,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:32,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:32,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:18:32,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:32,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:18:32,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:18:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:18:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:18:32,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:18:32,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:18:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:32,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:32,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:18:32,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:32,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:18:32,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:32,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:18:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:18:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:18:32,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:34,754 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 16:18:34,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931310430] [2020-10-27 16:18:34,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:18:34,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:18:34,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857175208] [2020-10-27 16:18:34,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:18:34,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:18:34,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:18:34,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:18:34,762 INFO L87 Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 5 states. [2020-10-27 16:19:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:19:00,549 INFO L93 Difference]: Finished difference Result 11640 states and 18924 transitions. [2020-10-27 16:19:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:19:00,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1681 [2020-10-27 16:19:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:19:00,601 INFO L225 Difference]: With dead ends: 11640 [2020-10-27 16:19:00,601 INFO L226 Difference]: Without dead ends: 7649 [2020-10-27 16:19:00,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:19:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2020-10-27 16:19:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 7571. [2020-10-27 16:19:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7571 states. [2020-10-27 16:19:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 10962 transitions. [2020-10-27 16:19:00,829 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 10962 transitions. Word has length 1681 [2020-10-27 16:19:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:19:00,833 INFO L481 AbstractCegarLoop]: Abstraction has 7571 states and 10962 transitions. [2020-10-27 16:19:00,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:19:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 10962 transitions. [2020-10-27 16:19:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1684 [2020-10-27 16:19:00,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:19:00,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:00,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:19:00,986 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:19:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:19:00,987 INFO L82 PathProgramCache]: Analyzing trace with hash 709474591, now seen corresponding path program 1 times [2020-10-27 16:19:00,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:19:00,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139471408] [2020-10-27 16:19:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:19:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:01,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:06,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:06,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1709 [2020-10-27 16:19:06,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:19:06,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-27 16:19:06,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:19:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 16:19:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1684 [2020-10-27 16:19:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:07,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:19:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:07,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:07,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:19:07,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:07,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:19:07,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:07,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:19:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:19:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:19:07,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:19:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:07,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:07,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:07,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 16:19:07,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 16:19:07,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:19:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:19:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 16:19:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:19:10,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139471408] [2020-10-27 16:19:10,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:19:10,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:19:10,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834086127] [2020-10-27 16:19:10,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:19:10,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:19:10,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:19:10,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:19:10,259 INFO L87 Difference]: Start difference. First operand 7571 states and 10962 transitions. Second operand 6 states. [2020-10-27 16:19:38,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:19:38,065 INFO L93 Difference]: Finished difference Result 18760 states and 28067 transitions. [2020-10-27 16:19:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:19:38,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1683 [2020-10-27 16:19:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:19:38,127 INFO L225 Difference]: With dead ends: 18760 [2020-10-27 16:19:38,127 INFO L226 Difference]: Without dead ends: 11195 [2020-10-27 16:19:38,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:19:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11195 states. [2020-10-27 16:19:38,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11195 to 11126. [2020-10-27 16:19:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11126 states. [2020-10-27 16:19:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11126 states to 11126 states and 15543 transitions. [2020-10-27 16:19:38,439 INFO L78 Accepts]: Start accepts. Automaton has 11126 states and 15543 transitions. Word has length 1683 [2020-10-27 16:19:38,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:19:38,442 INFO L481 AbstractCegarLoop]: Abstraction has 11126 states and 15543 transitions. [2020-10-27 16:19:38,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:19:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 11126 states and 15543 transitions. [2020-10-27 16:19:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1703 [2020-10-27 16:19:38,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:19:38,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:38,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:19:38,500 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:19:38,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:19:38,501 INFO L82 PathProgramCache]: Analyzing trace with hash 865529032, now seen corresponding path program 1 times [2020-10-27 16:19:38,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:19:38,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516561171] [2020-10-27 16:19:38,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:19:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:38,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:39,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:43,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:43,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1730 [2020-10-27 16:19:43,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:19:43,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-27 16:19:43,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:43,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:19:43,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:19:43,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 16:19:43,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:44,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:19:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:44,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:19:44,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:19:44,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:19:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:19:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:19:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:19:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:44,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:44,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:19:44,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:19:44,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:19:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:19:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:19:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:44,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 16:19:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:44,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:44,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:44,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 16:19:44,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 16:19:44,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:19:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:19:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 16:19:44,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:19:45,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516561171] [2020-10-27 16:19:45,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:19:45,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:19:45,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492554154] [2020-10-27 16:19:45,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:19:45,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:19:45,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:19:45,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:19:45,542 INFO L87 Difference]: Start difference. First operand 11126 states and 15543 transitions. Second operand 7 states. [2020-10-27 16:20:17,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:20:17,542 INFO L93 Difference]: Finished difference Result 32947 states and 46942 transitions. [2020-10-27 16:20:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 16:20:17,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1702 [2020-10-27 16:20:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:20:17,640 INFO L225 Difference]: With dead ends: 32947 [2020-10-27 16:20:17,640 INFO L226 Difference]: Without dead ends: 21827 [2020-10-27 16:20:17,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:20:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21827 states. [2020-10-27 16:20:18,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21827 to 21809. [2020-10-27 16:20:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21809 states. [2020-10-27 16:20:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21809 states to 21809 states and 29875 transitions. [2020-10-27 16:20:18,257 INFO L78 Accepts]: Start accepts. Automaton has 21809 states and 29875 transitions. Word has length 1702 [2020-10-27 16:20:18,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:20:18,257 INFO L481 AbstractCegarLoop]: Abstraction has 21809 states and 29875 transitions. [2020-10-27 16:20:18,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:20:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand 21809 states and 29875 transitions. [2020-10-27 16:20:18,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2020-10-27 16:20:18,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:20:18,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:18,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:20:18,340 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:20:18,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:20:18,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1552909798, now seen corresponding path program 1 times [2020-10-27 16:20:18,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:20:18,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851247690] [2020-10-27 16:20:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:20:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:18,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:23,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:23,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1737 [2020-10-27 16:20:23,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:20:23,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-27 16:20:23,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 16:20:23,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 16:20:23,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-27 16:20:23,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:26,626 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-27 16:20:26,829 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-10-27 16:20:27,012 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-10-27 16:20:27,206 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-10-27 16:20:27,335 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2020-10-27 16:20:27,474 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-27 16:20:27,600 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-27 16:20:27,741 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-27 16:20:27,879 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-27 16:20:28,014 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-27 16:20:28,156 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-27 16:20:29,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:20:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:29,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:29,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:20:29,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:20:29,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:29,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:20:29,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:29,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:20:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:29,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:20:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:29,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:29,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:29,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 16:20:29,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:20:29,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:20:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:20:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 16:20:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:29,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:29,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 16:20:29,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 16:20:29,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 16:20:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 16:20:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:20:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 16:20:50,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851247690] [2020-10-27 16:20:50,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:20:50,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 16:20:50,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037349952] [2020-10-27 16:20:50,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 16:20:50,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:20:50,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 16:20:50,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-27 16:20:50,700 INFO L87 Difference]: Start difference. First operand 21809 states and 29875 transitions. Second operand 24 states. [2020-10-27 16:20:51,199 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-27 16:20:51,593 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 16:20:51,862 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 16:20:57,984 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2020-10-27 16:20:59,461 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-10-27 16:21:01,993 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-10-27 16:21:02,450 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2020-10-27 16:21:12,389 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-10-27 16:21:12,845 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107