/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:08:47,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:08:47,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:08:47,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:08:47,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:08:47,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:08:47,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:08:47,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:08:48,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:08:48,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:08:48,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:08:48,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:08:48,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:08:48,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:08:48,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:08:48,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:08:48,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:08:48,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:08:48,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:08:48,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:08:48,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:08:48,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:08:48,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:08:48,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:08:48,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:08:48,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:08:48,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:08:48,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:08:48,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:08:48,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:08:48,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:08:48,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:08:48,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:08:48,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:08:48,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:08:48,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:08:48,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:08:48,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:08:48,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:08:48,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:08:48,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:08:48,101 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 [2020-10-26 23:08:48,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:08:48,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:08:48,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:08:48,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:08:48,164 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:08:48,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:08:48,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:08:48,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:08:48,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:08:48,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:08:48,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:08:48,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:08:48,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:08:48,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:08:48,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:08:48,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:08:48,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:08:48,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:08:48,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:08:48,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:08:48,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:08:48,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:08:48,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:08:48,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:08:48,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:08:48,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:08:48,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:08:48,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:08:48,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:08:48,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:08:48,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:08:48,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:08:48,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:08:48,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:08:48,663 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:08:48,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label23.c [2020-10-26 23:08:48,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1871de1c5/6a9c35bc1aed47bc9023b4b852706d3f/FLAG7f8554913 [2020-10-26 23:08:49,843 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:08:49,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label23.c [2020-10-26 23:08:49,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1871de1c5/6a9c35bc1aed47bc9023b4b852706d3f/FLAG7f8554913 [2020-10-26 23:08:50,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1871de1c5/6a9c35bc1aed47bc9023b4b852706d3f [2020-10-26 23:08:50,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:08:50,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:08:50,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:08:50,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:08:50,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:08:50,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:08:50" (1/1) ... [2020-10-26 23:08:50,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9562b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:50, skipping insertion in model container [2020-10-26 23:08:50,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:08:50" (1/1) ... [2020-10-26 23:08:50,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:08:50,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:08:52,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:08:52,379 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:08:53,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:08:53,287 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:08:53,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:53 WrapperNode [2020-10-26 23:08:53,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:08:53,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:08:53,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:08:53,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:08:53,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:53" (1/1) ... [2020-10-26 23:08:53,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:53" (1/1) ... [2020-10-26 23:08:53,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:53" (1/1) ... [2020-10-26 23:08:53,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:53" (1/1) ... [2020-10-26 23:08:53,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:53" (1/1) ... [2020-10-26 23:08:53,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:53" (1/1) ... [2020-10-26 23:08:53,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:53" (1/1) ... [2020-10-26 23:08:53,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:08:53,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:08:53,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:08:53,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:08:53,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:53" (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 [2020-10-26 23:08:53,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:08:53,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:08:53,920 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:08:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:08:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:08:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 23:08:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 23:08:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:08:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:08:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:08:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 23:08:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 23:08:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:08:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:08:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:08:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:08:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:08:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:08:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:08:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:08:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:08:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:08:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:08:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:08:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:09:05,153 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:09:05,154 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:09:05,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:09:05 BoogieIcfgContainer [2020-10-26 23:09:05,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:09:05,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:09:05,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:09:05,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:09:05,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:08:50" (1/3) ... [2020-10-26 23:09:05,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cc3e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:09:05, skipping insertion in model container [2020-10-26 23:09:05,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:08:53" (2/3) ... [2020-10-26 23:09:05,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cc3e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:09:05, skipping insertion in model container [2020-10-26 23:09:05,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:09:05" (3/3) ... [2020-10-26 23:09:05,169 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2020-10-26 23:09:05,184 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:09:05,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:09:05,208 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:09:05,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:09:05,248 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:09:05,248 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:09:05,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:09:05,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:09:05,249 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:09:05,249 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:09:05,249 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:09:05,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-26 23:09:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 23:09:05,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:09:05,301 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] [2020-10-26 23:09:05,301 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:09:05,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:09:05,310 INFO L82 PathProgramCache]: Analyzing trace with hash -880097678, now seen corresponding path program 1 times [2020-10-26 23:09:05,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:09:05,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83052910] [2020-10-26 23:09:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:09:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:06,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:06,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 23:09:06,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:09:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-26 23:09:06,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:09:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:09:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 23:09:06,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:09:06,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:09:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:06,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:06,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:09:06,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:09:06,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:09:06,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:09:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:09:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:09:06,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:09:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:09:06,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83052910] [2020-10-26 23:09:06,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:09:06,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:09:06,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710882849] [2020-10-26 23:09:06,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:09:06,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:09:06,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:09:06,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:09:06,365 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-26 23:09:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:09:24,056 INFO L93 Difference]: Finished difference Result 3248 states and 5954 transitions. [2020-10-26 23:09:24,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:09:24,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-26 23:09:24,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:09:24,114 INFO L225 Difference]: With dead ends: 3248 [2020-10-26 23:09:24,114 INFO L226 Difference]: Without dead ends: 2046 [2020-10-26 23:09:24,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:09:24,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2020-10-26 23:09:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1989. [2020-10-26 23:09:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2020-10-26 23:09:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 3534 transitions. [2020-10-26 23:09:24,385 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 3534 transitions. Word has length 20 [2020-10-26 23:09:24,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:09:24,386 INFO L481 AbstractCegarLoop]: Abstraction has 1989 states and 3534 transitions. [2020-10-26 23:09:24,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:09:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 3534 transitions. [2020-10-26 23:09:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-26 23:09:24,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:09:24,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:09:24,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:09:24,393 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:09:24,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:09:24,394 INFO L82 PathProgramCache]: Analyzing trace with hash -900560970, now seen corresponding path program 1 times [2020-10-26 23:09:24,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:09:24,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412308750] [2020-10-26 23:09:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:09:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:25,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:25,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:09:25,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:09:25,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-10-26 23:09:25,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:09:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:09:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:09:25,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:09:25,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:09:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:25,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:25,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:09:25,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:09:25,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:09:25,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:25,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:09:25,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:09:25,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:09:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:09:26,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:09:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:26,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:26,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:09:26,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:09:26,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-26 23:09:26,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:09:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:09:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:09:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:09:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:09:26,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412308750] [2020-10-26 23:09:26,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:09:26,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:09:26,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364447553] [2020-10-26 23:09:26,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:09:26,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:09:26,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:09:26,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:09:26,367 INFO L87 Difference]: Start difference. First operand 1989 states and 3534 transitions. Second operand 7 states. [2020-10-26 23:09:46,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:09:46,055 INFO L93 Difference]: Finished difference Result 5735 states and 10346 transitions. [2020-10-26 23:09:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:09:46,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-26 23:09:46,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:09:46,085 INFO L225 Difference]: With dead ends: 5735 [2020-10-26 23:09:46,086 INFO L226 Difference]: Without dead ends: 3752 [2020-10-26 23:09:46,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:09:46,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2020-10-26 23:09:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3679. [2020-10-26 23:09:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3679 states. [2020-10-26 23:09:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 5735 transitions. [2020-10-26 23:09:46,261 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 5735 transitions. Word has length 89 [2020-10-26 23:09:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:09:46,262 INFO L481 AbstractCegarLoop]: Abstraction has 3679 states and 5735 transitions. [2020-10-26 23:09:46,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:09:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 5735 transitions. [2020-10-26 23:09:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 23:09:46,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:09:46,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:09:46,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:09:46,276 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:09:46,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:09:46,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1659863030, now seen corresponding path program 1 times [2020-10-26 23:09:46,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:09:46,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418858522] [2020-10-26 23:09:46,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:09:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:46,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:47,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:47,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:09:47,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:09:47,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1153 [2020-10-26 23:09:47,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:09:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:09:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:09:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:09:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:09:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:47,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:47,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:09:47,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:09:47,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:09:47,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:47,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:09:47,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:09:47,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:09:47,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:09:47,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:09:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:47,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:47,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:09:47,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:09:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:09:47,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:09:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:09:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:09:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:09:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:09:47,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418858522] [2020-10-26 23:09:47,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:09:47,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:09:47,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747451619] [2020-10-26 23:09:47,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:09:47,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:09:47,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:09:47,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:09:47,938 INFO L87 Difference]: Start difference. First operand 3679 states and 5735 transitions. Second operand 7 states. [2020-10-26 23:10:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:10:19,043 INFO L93 Difference]: Finished difference Result 11013 states and 17599 transitions. [2020-10-26 23:10:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:10:19,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-26 23:10:19,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:10:19,103 INFO L225 Difference]: With dead ends: 11013 [2020-10-26 23:10:19,103 INFO L226 Difference]: Without dead ends: 7340 [2020-10-26 23:10:19,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:10:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7340 states. [2020-10-26 23:10:19,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7340 to 7194. [2020-10-26 23:10:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7194 states. [2020-10-26 23:10:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 10321 transitions. [2020-10-26 23:10:19,498 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 10321 transitions. Word has length 95 [2020-10-26 23:10:19,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:10:19,499 INFO L481 AbstractCegarLoop]: Abstraction has 7194 states and 10321 transitions. [2020-10-26 23:10:19,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:10:19,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 10321 transitions. [2020-10-26 23:10:19,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-26 23:10:19,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:10:19,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:10:19,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:10:19,505 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:10:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:10:19,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1463398994, now seen corresponding path program 1 times [2020-10-26 23:10:19,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:10:19,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21739795] [2020-10-26 23:10:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:10:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:19,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:20,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:20,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 23:10:20,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:10:20,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-26 23:10:20,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:10:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:10:20,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:10:20,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:20,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:10:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:20,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:20,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:20,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:10:20,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:10:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:10:20,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:10:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:10:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:10:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:20,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:10:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:21,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:21,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-26 23:10:21,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:10:21,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-26 23:10:21,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:21,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:10:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:10:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:10:21,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:10:21,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21739795] [2020-10-26 23:10:21,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:10:21,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:10:21,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806118845] [2020-10-26 23:10:21,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:10:21,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:10:21,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:10:21,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:10:21,369 INFO L87 Difference]: Start difference. First operand 7194 states and 10321 transitions. Second operand 7 states. [2020-10-26 23:10:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:10:48,201 INFO L93 Difference]: Finished difference Result 21777 states and 32664 transitions. [2020-10-26 23:10:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:10:48,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-26 23:10:48,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:10:48,304 INFO L225 Difference]: With dead ends: 21777 [2020-10-26 23:10:48,304 INFO L226 Difference]: Without dead ends: 14589 [2020-10-26 23:10:48,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:10:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14589 states. [2020-10-26 23:10:48,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14589 to 14272. [2020-10-26 23:10:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14272 states. [2020-10-26 23:10:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14272 states to 14272 states and 19140 transitions. [2020-10-26 23:10:48,831 INFO L78 Accepts]: Start accepts. Automaton has 14272 states and 19140 transitions. Word has length 125 [2020-10-26 23:10:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:10:48,833 INFO L481 AbstractCegarLoop]: Abstraction has 14272 states and 19140 transitions. [2020-10-26 23:10:48,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:10:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 14272 states and 19140 transitions. [2020-10-26 23:10:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-26 23:10:48,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:10:48,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:10:48,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:10:48,843 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:10:48,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:10:48,844 INFO L82 PathProgramCache]: Analyzing trace with hash 296444347, now seen corresponding path program 1 times [2020-10-26 23:10:48,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:10:48,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624423784] [2020-10-26 23:10:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:10:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:49,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:50,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-26 23:10:50,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:10:50,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1978 [2020-10-26 23:10:50,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:10:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:10:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 23:10:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:10:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:51,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:51,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:10:51,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:10:51,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:10:51,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:10:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:10:51,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:10:51,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:51,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:10:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:51,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:51,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:51,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-26 23:10:51,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:10:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-26 23:10:51,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:10:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:10:51,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 23:10:51,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:10:51,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624423784] [2020-10-26 23:10:51,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:10:51,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:10:51,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287274385] [2020-10-26 23:10:51,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:10:51,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:10:51,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:10:51,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:10:51,598 INFO L87 Difference]: Start difference. First operand 14272 states and 19140 transitions. Second operand 7 states. [2020-10-26 23:11:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:11:18,091 INFO L93 Difference]: Finished difference Result 33020 states and 43940 transitions. [2020-10-26 23:11:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:11:18,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-26 23:11:18,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:11:18,182 INFO L225 Difference]: With dead ends: 33020 [2020-10-26 23:11:18,182 INFO L226 Difference]: Without dead ends: 18754 [2020-10-26 23:11:18,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:11:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18754 states. [2020-10-26 23:11:18,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18754 to 18585. [2020-10-26 23:11:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18585 states. [2020-10-26 23:11:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18585 states to 18585 states and 24238 transitions. [2020-10-26 23:11:18,848 INFO L78 Accepts]: Start accepts. Automaton has 18585 states and 24238 transitions. Word has length 140 [2020-10-26 23:11:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:11:18,848 INFO L481 AbstractCegarLoop]: Abstraction has 18585 states and 24238 transitions. [2020-10-26 23:11:18,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:11:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 18585 states and 24238 transitions. [2020-10-26 23:11:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-26 23:11:18,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:11:18,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:11:18,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:11:18,854 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:11:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:11:18,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1281598031, now seen corresponding path program 1 times [2020-10-26 23:11:18,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:11:18,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564825232] [2020-10-26 23:11:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:11:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:19,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:19,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:23,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:23,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-26 23:11:23,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:11:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:11:23,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:11:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:11:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:11:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:11:24,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:11:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:24,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:24,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:11:24,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:11:24,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:11:24,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:11:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:11:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:11:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:11:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:11:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:24,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:24,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:11:24,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:11:24,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 23:11:24,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:11:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:11:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:11:24,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:11:24,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 23:11:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:24,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:24,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-26 23:11:24,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:11:24,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-26 23:11:24,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:11:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:11:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 23:11:24,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:11:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-26 23:11:25,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564825232] [2020-10-26 23:11:25,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:11:25,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:11:25,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61692302] [2020-10-26 23:11:25,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:11:25,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:11:25,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:11:25,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:11:25,241 INFO L87 Difference]: Start difference. First operand 18585 states and 24238 transitions. Second operand 7 states. [2020-10-26 23:11:54,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:11:54,922 INFO L93 Difference]: Finished difference Result 42823 states and 56693 transitions. [2020-10-26 23:11:54,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:11:54,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-26 23:11:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:11:55,039 INFO L225 Difference]: With dead ends: 42823 [2020-10-26 23:11:55,039 INFO L226 Difference]: Without dead ends: 25047 [2020-10-26 23:11:55,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:11:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25047 states. [2020-10-26 23:11:55,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25047 to 24655. [2020-10-26 23:11:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24655 states. [2020-10-26 23:11:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24655 states to 24655 states and 31642 transitions. [2020-10-26 23:11:55,715 INFO L78 Accepts]: Start accepts. Automaton has 24655 states and 31642 transitions. Word has length 233 [2020-10-26 23:11:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:11:55,716 INFO L481 AbstractCegarLoop]: Abstraction has 24655 states and 31642 transitions. [2020-10-26 23:11:55,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:11:55,716 INFO L276 IsEmpty]: Start isEmpty. Operand 24655 states and 31642 transitions. [2020-10-26 23:11:55,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-26 23:11:55,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:11:55,721 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:11:55,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:11:55,722 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:11:55,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:11:55,724 INFO L82 PathProgramCache]: Analyzing trace with hash -491819647, now seen corresponding path program 1 times [2020-10-26 23:11:55,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:11:55,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383742646] [2020-10-26 23:11:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:11:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:55,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:59,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:59,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-26 23:11:59,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:11:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4081 [2020-10-26 23:11:59,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:11:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:11:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-26 23:11:59,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:12:00,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:12:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:12:00,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:12:00,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:12:00,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:12:00,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:12:00,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:12:00,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:12:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:12:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:12:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:12:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:12:00,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:12:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:12:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:12:00,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:12:00,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:12:00,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:12:00,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:12:00,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-26 23:12:00,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:12:00,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:12:00,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:12:00,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:12:00,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:12:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 23:12:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:12:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:12:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:12:01,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:12:01,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:12:01,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:12:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-26 23:12:01,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:12:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:12:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:12:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:12:01,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:12:01,509 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-26 23:12:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-26 23:12:02,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383742646] [2020-10-26 23:12:02,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:12:02,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:12:02,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030708984] [2020-10-26 23:12:02,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:12:02,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:12:02,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:12:02,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:12:02,191 INFO L87 Difference]: Start difference. First operand 24655 states and 31642 transitions. Second operand 11 states. [2020-10-26 23:12:02,436 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-26 23:12:03,093 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 23:12:06,576 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-10-26 23:12:07,150 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-10-26 23:12:07,502 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-10-26 23:12:07,934 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-26 23:12:08,332 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-26 23:12:09,052 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-26 23:12:09,832 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-10-26 23:12:10,141 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-10-26 23:12:10,806 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-26 23:12:18,632 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31