/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:52:19,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:52:19,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:52:19,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:52:19,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:52:19,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:52:19,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:52:19,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:52:19,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:52:19,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:52:19,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:52:19,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:52:19,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:52:19,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:52:19,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:52:19,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:52:19,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:52:19,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:52:19,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:52:19,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:52:19,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:52:19,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:52:19,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:52:19,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:52:19,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:52:19,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:52:19,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:52:19,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:52:19,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:52:19,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:52:19,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:52:19,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:52:19,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:52:19,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:52:19,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:52:19,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:52:19,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:52:19,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:52:19,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:52:19,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:52:19,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:52:19,230 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 [2020-09-25 10:52:19,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:52:19,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:52:19,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:52:19,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:52:19,279 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:52:19,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:52:19,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:52:19,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:52:19,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:52:19,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:52:19,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:52:19,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:52:19,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:52:19,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:52:19,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:52:19,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:52:19,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:52:19,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:52:19,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:52:19,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:52:19,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:52:19,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:52:19,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:52:19,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:52:19,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:52:19,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:52:19,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:52:19,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:52:19,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:52:19,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 10:52:19,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:52:19,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:52:19,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:52:19,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:52:19,786 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:52:19,787 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product05.cil.c [2020-09-25 10:52:19,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f82b2e895/946e0221fc7d40839eddb81e5ade2ac6/FLAGf51d1dc53 [2020-09-25 10:52:20,502 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:52:20,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product05.cil.c [2020-09-25 10:52:20,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f82b2e895/946e0221fc7d40839eddb81e5ade2ac6/FLAGf51d1dc53 [2020-09-25 10:52:20,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f82b2e895/946e0221fc7d40839eddb81e5ade2ac6 [2020-09-25 10:52:20,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:52:20,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:52:20,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:52:20,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:52:20,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:52:20,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:52:20" (1/1) ... [2020-09-25 10:52:20,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638c4c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:20, skipping insertion in model container [2020-09-25 10:52:20,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:52:20" (1/1) ... [2020-09-25 10:52:20,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:52:20,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:52:21,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:52:21,407 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:52:21,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:52:21,539 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:52:21,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:21 WrapperNode [2020-09-25 10:52:21,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:52:21,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:52:21,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:52:21,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:52:21,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:21" (1/1) ... [2020-09-25 10:52:21,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:21" (1/1) ... [2020-09-25 10:52:21,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:21" (1/1) ... [2020-09-25 10:52:21,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:21" (1/1) ... [2020-09-25 10:52:21,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:21" (1/1) ... [2020-09-25 10:52:21,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:21" (1/1) ... [2020-09-25 10:52:21,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:21" (1/1) ... [2020-09-25 10:52:21,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:52:21,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:52:21,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:52:21,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:52:21,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:21" (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 [2020-09-25 10:52:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:52:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:52:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 10:52:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 10:52:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 10:52:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 10:52:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 10:52:21,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:52:21,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-25 10:52:21,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-25 10:52:21,740 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 10:52:21,740 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 10:52:21,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 10:52:21,741 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 10:52:21,741 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 10:52:21,742 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 10:52:21,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 10:52:21,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 10:52:21,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 10:52:21,743 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 10:52:21,743 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 10:52:21,744 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 10:52:21,744 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 10:52:21,744 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 10:52:21,744 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 10:52:21,745 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 10:52:21,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 10:52:21,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 10:52:21,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 10:52:21,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 10:52:21,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 10:52:21,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 10:52:21,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 10:52:21,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 10:52:21,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 10:52:21,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 10:52:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:52:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:52:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 10:52:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 10:52:21,748 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 10:52:21,748 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 10:52:21,748 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 10:52:21,748 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 10:52:21,748 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 10:52:21,748 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 10:52:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-25 10:52:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 10:52:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 10:52:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 10:52:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 10:52:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 10:52:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:52:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 10:52:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 10:52:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 10:52:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-25 10:52:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 10:52:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 10:52:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 10:52:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 10:52:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 10:52:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 10:52:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 10:52:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 10:52:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 10:52:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 10:52:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 10:52:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:52:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:52:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 10:52:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:52:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:52:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:52:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:52:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 10:52:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:52:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 10:52:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 10:52:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:52:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 10:52:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 10:52:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 10:52:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:52:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 10:52:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:52:22,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:52:22,979 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 10:52:22,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:52:22 BoogieIcfgContainer [2020-09-25 10:52:22,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:52:22,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:52:22,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:52:23,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:52:23,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:52:20" (1/3) ... [2020-09-25 10:52:23,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5090958c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:52:23, skipping insertion in model container [2020-09-25 10:52:23,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:21" (2/3) ... [2020-09-25 10:52:23,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5090958c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:52:23, skipping insertion in model container [2020-09-25 10:52:23,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:52:22" (3/3) ... [2020-09-25 10:52:23,008 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product05.cil.c [2020-09-25 10:52:23,020 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:52:23,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:52:23,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:52:23,099 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:52:23,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:52:23,099 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:52:23,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:52:23,100 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:52:23,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:52:23,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:52:23,101 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:52:23,139 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states. [2020-09-25 10:52:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 10:52:23,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:52:23,165 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] [2020-09-25 10:52:23,166 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:52:23,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:52:23,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1360572740, now seen corresponding path program 1 times [2020-09-25 10:52:23,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:52:23,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122093214] [2020-09-25 10:52:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:52:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:23,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:24,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:25,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:26,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:28,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:28,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 10:52:28,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:52:28,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-09-25 10:52:28,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:28,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 10:52:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 10:52:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:52:29,049 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 10:52:29,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:52:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:29,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:29,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 10:52:29,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:29,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-25 10:52:29,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:29,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:52:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:29,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 10:52:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:29,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:29,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:29,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:29,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:52:29,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:29,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:52:29,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 10:52:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:29,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:29,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:29,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:29,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:52:29,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:29,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:52:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:29,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 10:52:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:29,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:29,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:52:29,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:29,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:52:29,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:29,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:52:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:29,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:52:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:29,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:29,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:29,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:29,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:52:29,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:29,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:29,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:29,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:29,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:52:29,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:29,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:52:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:29,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:29,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:29,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:52:29,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:52:29,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:29,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:52:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-25 10:52:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:29,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:29,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:52:29,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:52:29,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:29,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:52:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 10:52:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:52:29,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:29,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 10:52:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:29,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:29,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:52:29,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:29,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:52:29,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:29,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:29,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:52:29,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 10:52:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:52:29,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:52:29,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122093214] [2020-09-25 10:52:29,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:52:29,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:52:29,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425702792] [2020-09-25 10:52:29,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:52:29,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:52:29,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:52:29,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:52:29,652 INFO L87 Difference]: Start difference. First operand 273 states. Second operand 5 states. [2020-09-25 10:52:30,310 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 10:52:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:52:31,187 INFO L93 Difference]: Finished difference Result 404 states and 482 transitions. [2020-09-25 10:52:31,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:52:31,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 10:52:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:52:31,210 INFO L225 Difference]: With dead ends: 404 [2020-09-25 10:52:31,211 INFO L226 Difference]: Without dead ends: 267 [2020-09-25 10:52:31,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:52:31,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-25 10:52:31,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 222. [2020-09-25 10:52:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-25 10:52:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 239 transitions. [2020-09-25 10:52:31,335 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 239 transitions. Word has length 148 [2020-09-25 10:52:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:52:31,336 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 239 transitions. [2020-09-25 10:52:31,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:52:31,337 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 239 transitions. [2020-09-25 10:52:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 10:52:31,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:52:31,342 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] [2020-09-25 10:52:31,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:52:31,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:52:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:52:31,343 INFO L82 PathProgramCache]: Analyzing trace with hash -731898127, now seen corresponding path program 1 times [2020-09-25 10:52:31,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:52:31,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580076589] [2020-09-25 10:52:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:52:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:31,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:32,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:33,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:36,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:36,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 10:52:36,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:52:36,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:52:36,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:36,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:52:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 10:52:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 10:52:36,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:36,764 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 10:52:36,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:52:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:36,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:37,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:37,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 10:52:37,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 10:52:37,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:37,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:52:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:37,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 10:52:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:37,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:37,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:37,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:37,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:52:37,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:37,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:37,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:37,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:37,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:52:37,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 10:52:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:37,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:37,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:37,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:37,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:37,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:52:37,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:37,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:52:37,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:37,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 10:52:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:37,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:37,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:37,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:52:37,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:37,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:52:37,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:37,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:37,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:37,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:37,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:52:37,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:52:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:37,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:37,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:37,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:37,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:37,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:52:37,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:37,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:52:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:37,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:52:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:37,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:37,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:52:37,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:37,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:52:37,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:37,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:52:37,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:37,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-25 10:52:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:37,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:37,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:52:37,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:52:37,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:37,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:52:37,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:37,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:52:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:37,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:37,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:37,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:37,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:52:37,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:37,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:52:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:52:37,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 10:52:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:37,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:37,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:37,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:52:37,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:52:37,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:37,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:52:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:52:37,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 10:52:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:37,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:37,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:52:37,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:52:37,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:37,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:52:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 10:52:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:52:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:52:37,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580076589] [2020-09-25 10:52:37,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:52:37,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:52:37,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697267756] [2020-09-25 10:52:37,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:52:37,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:52:37,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:52:37,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:52:37,271 INFO L87 Difference]: Start difference. First operand 222 states and 239 transitions. Second operand 10 states. [2020-09-25 10:52:37,805 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 10:52:38,898 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:39,285 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-25 10:52:39,984 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 10:52:40,352 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 10:52:40,945 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:41,291 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 10:52:41,593 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:42,175 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 10:52:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:52:42,932 INFO L93 Difference]: Finished difference Result 545 states and 669 transitions. [2020-09-25 10:52:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:52:42,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 157 [2020-09-25 10:52:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:52:42,939 INFO L225 Difference]: With dead ends: 545 [2020-09-25 10:52:42,940 INFO L226 Difference]: Without dead ends: 420 [2020-09-25 10:52:42,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:52:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-09-25 10:52:43,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 301. [2020-09-25 10:52:43,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-09-25 10:52:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 330 transitions. [2020-09-25 10:52:43,004 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 330 transitions. Word has length 157 [2020-09-25 10:52:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:52:43,005 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 330 transitions. [2020-09-25 10:52:43,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:52:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 330 transitions. [2020-09-25 10:52:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 10:52:43,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:52:43,009 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] [2020-09-25 10:52:43,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:52:43,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:52:43,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:52:43,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1324537707, now seen corresponding path program 1 times [2020-09-25 10:52:43,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:52:43,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780123330] [2020-09-25 10:52:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:52:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 10:52:48,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:52:48,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 10:52:48,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:52:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 10:52:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:52:48,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:48,575 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 10:52:48,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:52:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 10:52:48,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:48,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 10:52:48,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:52:48,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 10:52:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:48,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:48,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:52:48,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:52:48,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:52:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 10:52:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:48,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:52:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:52:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 10:52:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:52:48,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:52:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:52:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:52:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:48,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:52:48,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:52:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:52:48,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:52:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:52:48,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:48,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:52:48,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:52:48,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:52:48,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-25 10:52:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:52:48,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:52:48,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:52:48,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-25 10:52:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:52:48,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:52:48,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:52:48,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:52:48,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:52:48,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:52:48,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:52:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:52:48,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:52:48,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:52:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 10:52:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:52:48,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:52:48,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:52:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:52:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:52:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-25 10:52:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:52:48,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:52:48,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:52:48,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:52:48,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:52:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:52:48,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:52:48,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 10:52:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:52:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:52:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:52:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:52:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:52:49,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780123330] [2020-09-25 10:52:49,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:52:49,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 10:52:49,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481033740] [2020-09-25 10:52:49,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:52:49,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:52:49,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:52:49,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:52:49,063 INFO L87 Difference]: Start difference. First operand 301 states and 330 transitions. Second operand 11 states. [2020-09-25 10:52:49,576 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 10:52:50,798 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:51,142 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-25 10:52:51,506 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:51,844 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 10:52:52,164 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:52:52,523 INFO L93 Difference]: Finished difference Result 507 states and 592 transitions. [2020-09-25 10:52:52,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:52:52,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 171 [2020-09-25 10:52:52,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:52:52,526 INFO L225 Difference]: With dead ends: 507 [2020-09-25 10:52:52,526 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:52:52,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:52:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:52:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:52:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:52:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:52:52,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 171 [2020-09-25 10:52:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:52:52,531 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:52:52,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:52:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:52:52,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:52:52,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:52:52,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:52:52,732 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:52,924 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:53,122 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:53,293 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 9 [2020-09-25 10:52:53,461 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:53,632 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:53,796 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:53,965 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:54,128 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:54,293 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:54,456 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 10:52:54,722 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 9 [2020-09-25 10:52:54,877 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:55,031 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:55,190 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:55,343 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:55,500 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:55,653 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:55,813 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:55,966 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:56,123 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:56,276 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:56,434 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:56,555 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 9 [2020-09-25 10:52:56,714 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:56,867 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:57,032 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:57,197 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:57,354 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:57,512 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:57,670 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:57,829 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:57,983 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:58,141 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:58,294 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:58,448 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:58,602 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:58,755 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:58,929 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:52:59,087 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:59,246 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:59,403 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:52:59,743 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-25 10:53:00,081 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-25 10:53:00,356 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 193 [2020-09-25 10:53:00,708 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-25 10:53:01,171 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 193 [2020-09-25 10:53:01,536 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 193 [2020-09-25 10:53:01,872 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-25 10:53:02,143 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 193 [2020-09-25 10:53:02,304 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:53:02,554 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 13 [2020-09-25 10:53:02,713 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:53:02,873 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:53:03,030 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:53:03,184 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:53:03,343 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:53:03,599 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 9 [2020-09-25 10:53:03,761 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:53:03,913 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:53:04,068 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:53:04,233 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:53:04,387 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:53:04,545 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:53:04,703 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:53:04,860 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:53:05,019 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:53:05,174 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:53:05,328 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:53:05,481 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:53:05,814 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-09-25 10:53:06,151 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-09-25 10:53:06,499 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 193 [2020-09-25 10:53:06,822 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-09-25 10:53:07,354 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 193 [2020-09-25 10:53:07,793 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 193 [2020-09-25 10:53:08,116 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-09-25 10:53:08,465 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 193 [2020-09-25 10:53:08,624 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 10:53:08,779 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 10:53:09,216 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 11 [2020-09-25 10:53:09,444 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 23 [2020-09-25 10:53:09,632 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 1 [2020-09-25 10:53:09,826 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 17 [2020-09-25 10:53:10,061 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 23 [2020-09-25 10:53:10,306 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 23 [2020-09-25 10:53:10,577 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 10:53:11,154 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 23 [2020-09-25 10:53:11,630 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 12 [2020-09-25 10:53:12,043 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 12 [2020-09-25 10:53:12,692 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 23 [2020-09-25 10:53:13,163 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 12 [2020-09-25 10:53:13,639 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 23 [2020-09-25 10:53:13,885 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 23 [2020-09-25 10:53:14,144 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 23 [2020-09-25 10:53:14,362 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 15 [2020-09-25 10:53:14,600 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 23