/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:42:12,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:42:12,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:42:12,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:42:12,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:42:12,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:42:12,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:42:12,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:42:12,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:42:12,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:42:12,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:42:12,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:42:12,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:42:12,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:42:12,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:42:12,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:42:12,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:42:12,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:42:12,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:42:12,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:42:12,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:42:12,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:42:12,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:42:12,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:42:12,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:42:12,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:42:12,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:42:12,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:42:12,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:42:12,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:42:12,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:42:12,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:42:12,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:42:12,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:42:12,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:42:12,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:42:12,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:42:12,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:42:12,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:42:12,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:42:12,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:42:12,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:42:12,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:42:12,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:42:12,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:42:12,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:42:12,708 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:42:12,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:42:12,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:42:12,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:42:12,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:42:12,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:42:12,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:42:12,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:42:12,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:42:12,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:42:12,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:42:12,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:42:12,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:42:12,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:42:12,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:42:12,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:42:12,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:42:12,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:42:12,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:42:12,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:42:12,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:42:12,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:42:12,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:42:12,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:42:12,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:42:12,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:42:13,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:42:13,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:42:13,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:42:13,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:42:13,281 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:42:13,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-27 05:42:13,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f66472568/d0a0dcb06d4a4b9ea0bd59bba3a8f1a7/FLAGefdeb1cf7 [2020-10-27 05:42:14,529 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:42:14,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-27 05:42:14,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f66472568/d0a0dcb06d4a4b9ea0bd59bba3a8f1a7/FLAGefdeb1cf7 [2020-10-27 05:42:14,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f66472568/d0a0dcb06d4a4b9ea0bd59bba3a8f1a7 [2020-10-27 05:42:14,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:42:14,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:42:14,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:42:14,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:42:14,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:42:14,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:14" (1/1) ... [2020-10-27 05:42:14,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487679c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:14, skipping insertion in model container [2020-10-27 05:42:14,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:14" (1/1) ... [2020-10-27 05:42:14,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:42:15,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:42:16,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:42:16,550 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:42:17,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:42:17,238 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:42:17,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:17 WrapperNode [2020-10-27 05:42:17,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:42:17,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:42:17,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:42:17,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:42:17,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:17" (1/1) ... [2020-10-27 05:42:17,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:17" (1/1) ... [2020-10-27 05:42:17,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:17" (1/1) ... [2020-10-27 05:42:17,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:17" (1/1) ... [2020-10-27 05:42:17,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:17" (1/1) ... [2020-10-27 05:42:17,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:17" (1/1) ... [2020-10-27 05:42:17,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:17" (1/1) ... [2020-10-27 05:42:17,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:42:17,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:42:17,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:42:17,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:42:17,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:42:17,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:42:17,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:42:17,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:42:17,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:42:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:42:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:42:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:42:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:42:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:42:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:42:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:42:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:42:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:42:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:42:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:42:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:42:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:42:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:42:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:42:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:42:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:42:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:42:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:42:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:42:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:42:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:42:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:42:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:42:23,509 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:42:23,510 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:42:23,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:23 BoogieIcfgContainer [2020-10-27 05:42:23,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:42:23,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:42:23,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:42:23,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:42:23,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:42:14" (1/3) ... [2020-10-27 05:42:23,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9ccfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:23, skipping insertion in model container [2020-10-27 05:42:23,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:17" (2/3) ... [2020-10-27 05:42:23,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9ccfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:23, skipping insertion in model container [2020-10-27 05:42:23,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:23" (3/3) ... [2020-10-27 05:42:23,524 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-27 05:42:23,536 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:42:23,542 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:42:23,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:42:23,603 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:42:23,604 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:42:23,604 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:42:23,604 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:42:23,604 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:42:23,604 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:42:23,604 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:42:23,605 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:42:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states. [2020-10-27 05:42:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 05:42:23,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:42:23,768 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] [2020-10-27 05:42:23,768 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:42:23,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:42:23,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1580064396, now seen corresponding path program 1 times [2020-10-27 05:42:23,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:42:23,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650073543] [2020-10-27 05:42:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:42:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:42:24,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:24,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:25,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:27,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:29,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:42:29,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 05:42:29,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:42:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:42:29,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:42:29,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:42:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:42:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 05:42:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:42:29,752 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2020-10-27 05:42:32,995 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification that was a NOOP. DAG size: 682 [2020-10-27 05:42:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:42:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:42:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:33,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:42:33,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:42:33,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:42:33,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 05:42:33,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:42:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:42:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:42:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:42:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:42:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:42:33,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650073543] [2020-10-27 05:42:33,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:42:33,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:42:33,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995385874] [2020-10-27 05:42:33,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:42:33,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:42:33,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:42:33,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:42:33,261 INFO L87 Difference]: Start difference. First operand 2055 states. Second operand 6 states. [2020-10-27 05:42:36,281 WARN L193 SmtUtils]: Spent 2.87 s on a formula simplification that was a NOOP. DAG size: 691 [2020-10-27 05:43:02,336 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 689 [2020-10-27 05:43:03,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:43:03,697 INFO L93 Difference]: Finished difference Result 4038 states and 7047 transitions. [2020-10-27 05:43:03,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:43:03,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-27 05:43:03,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:43:03,741 INFO L225 Difference]: With dead ends: 4038 [2020-10-27 05:43:03,741 INFO L226 Difference]: Without dead ends: 2685 [2020-10-27 05:43:03,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:43:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2020-10-27 05:43:03,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2679. [2020-10-27 05:43:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2679 states. [2020-10-27 05:43:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 3475 transitions. [2020-10-27 05:43:03,952 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 3475 transitions. Word has length 70 [2020-10-27 05:43:03,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:43:03,953 INFO L481 AbstractCegarLoop]: Abstraction has 2679 states and 3475 transitions. [2020-10-27 05:43:03,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:43:03,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 3475 transitions. [2020-10-27 05:43:03,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 05:43:03,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:43:03,964 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] [2020-10-27 05:43:03,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:43:03,965 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:43:03,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:43:03,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2053067674, now seen corresponding path program 1 times [2020-10-27 05:43:03,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:43:03,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723749656] [2020-10-27 05:43:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:43:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:04,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:04,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:05,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:06,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:06,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:09,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:43:09,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 05:43:09,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:43:09,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 05:43:09,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:43:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:43:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:43:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 05:43:09,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:43:12,271 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification that was a NOOP. DAG size: 682 [2020-10-27 05:43:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:43:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:12,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:12,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:43:12,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:43:12,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:43:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 05:43:12,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:43:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:43:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:43:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:43:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:43:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:43:12,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723749656] [2020-10-27 05:43:12,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:43:12,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:43:12,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43592863] [2020-10-27 05:43:12,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:43:12,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:43:12,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:43:12,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:43:12,477 INFO L87 Difference]: Start difference. First operand 2679 states and 3475 transitions. Second operand 6 states. [2020-10-27 05:43:15,538 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification that was a NOOP. DAG size: 688 [2020-10-27 05:43:32,901 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 687 [2020-10-27 05:43:33,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:43:33,406 INFO L93 Difference]: Finished difference Result 4512 states and 5867 transitions. [2020-10-27 05:43:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:43:33,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-27 05:43:33,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:43:33,422 INFO L225 Difference]: With dead ends: 4512 [2020-10-27 05:43:33,422 INFO L226 Difference]: Without dead ends: 2936 [2020-10-27 05:43:33,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:43:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-10-27 05:43:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2922. [2020-10-27 05:43:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2020-10-27 05:43:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 3813 transitions. [2020-10-27 05:43:33,553 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 3813 transitions. Word has length 71 [2020-10-27 05:43:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:43:33,553 INFO L481 AbstractCegarLoop]: Abstraction has 2922 states and 3813 transitions. [2020-10-27 05:43:33,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:43:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 3813 transitions. [2020-10-27 05:43:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 05:43:33,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:43:33,562 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] [2020-10-27 05:43:33,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:43:33,562 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:43:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:43:33,563 INFO L82 PathProgramCache]: Analyzing trace with hash 53553894, now seen corresponding path program 1 times [2020-10-27 05:43:33,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:43:33,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380840235] [2020-10-27 05:43:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:43:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:34,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:36,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:37,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:38,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:43:38,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 05:43:38,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:43:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 05:43:38,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:43:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 05:43:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:43:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 05:43:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:43:41,985 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 682 [2020-10-27 05:43:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:43:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:42,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:43:42,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:43:42,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:43:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 05:43:42,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:43:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:43:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:43:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:43:42,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:43:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:43:42,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380840235] [2020-10-27 05:43:42,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:43:42,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 05:43:42,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957393794] [2020-10-27 05:43:42,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 05:43:42,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:43:42,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 05:43:42,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:43:42,184 INFO L87 Difference]: Start difference. First operand 2922 states and 3813 transitions. Second operand 12 states. [2020-10-27 05:43:48,396 WARN L193 SmtUtils]: Spent 6.00 s on a formula simplification. DAG size of input: 701 DAG size of output: 698 [2020-10-27 05:44:10,900 WARN L193 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 699 DAG size of output: 696 [2020-10-27 05:44:18,239 WARN L193 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 696 DAG size of output: 691 [2020-10-27 05:44:25,507 WARN L193 SmtUtils]: Spent 5.97 s on a formula simplification. DAG size of input: 694 DAG size of output: 689 [2020-10-27 05:44:27,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:44:27,935 INFO L93 Difference]: Finished difference Result 5479 states and 7294 transitions. [2020-10-27 05:44:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:44:27,936 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-27 05:44:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:44:27,959 INFO L225 Difference]: With dead ends: 5479 [2020-10-27 05:44:27,959 INFO L226 Difference]: Without dead ends: 5110 [2020-10-27 05:44:27,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=222, Invalid=648, Unknown=0, NotChecked=0, Total=870 [2020-10-27 05:44:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2020-10-27 05:44:28,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 2956. [2020-10-27 05:44:28,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2956 states. [2020-10-27 05:44:28,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 3860 transitions. [2020-10-27 05:44:28,162 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 3860 transitions. Word has length 71 [2020-10-27 05:44:28,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:44:28,163 INFO L481 AbstractCegarLoop]: Abstraction has 2956 states and 3860 transitions. [2020-10-27 05:44:28,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 05:44:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 3860 transitions. [2020-10-27 05:44:28,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 05:44:28,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:44:28,169 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] [2020-10-27 05:44:28,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:44:28,170 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:44:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:44:28,170 INFO L82 PathProgramCache]: Analyzing trace with hash -789301208, now seen corresponding path program 1 times [2020-10-27 05:44:28,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:44:28,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820565664] [2020-10-27 05:44:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:44:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:28,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:28,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:29,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:32,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:33,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:33,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 05:44:33,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:44:33,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:44:33,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:44:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:44:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:44:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:44:36,406 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification that was a NOOP. DAG size: 682 [2020-10-27 05:44:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:44:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:36,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:36,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:44:36,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:44:36,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 05:44:36,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:36,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:44:36,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:44:36,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:44:36,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:44:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:44:36,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820565664] [2020-10-27 05:44:36,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:44:36,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:44:36,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977850614] [2020-10-27 05:44:36,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:44:36,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:44:36,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:44:36,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:44:36,611 INFO L87 Difference]: Start difference. First operand 2956 states and 3860 transitions. Second operand 9 states. [2020-10-27 05:44:39,840 WARN L193 SmtUtils]: Spent 3.02 s on a formula simplification that was a NOOP. DAG size: 686 [2020-10-27 05:44:56,958 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification that was a NOOP. DAG size: 689 [2020-10-27 05:45:02,815 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification that was a NOOP. DAG size: 688 [2020-10-27 05:45:03,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:45:03,237 INFO L93 Difference]: Finished difference Result 5088 states and 7006 transitions. [2020-10-27 05:45:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 05:45:03,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-27 05:45:03,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:45:03,256 INFO L225 Difference]: With dead ends: 5088 [2020-10-27 05:45:03,256 INFO L226 Difference]: Without dead ends: 4663 [2020-10-27 05:45:03,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:45:03,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2020-10-27 05:45:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 2964. [2020-10-27 05:45:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2964 states. [2020-10-27 05:45:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 3860 transitions. [2020-10-27 05:45:03,458 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 3860 transitions. Word has length 72 [2020-10-27 05:45:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:45:03,459 INFO L481 AbstractCegarLoop]: Abstraction has 2964 states and 3860 transitions. [2020-10-27 05:45:03,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:45:03,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 3860 transitions. [2020-10-27 05:45:03,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 05:45:03,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:45:03,465 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] [2020-10-27 05:45:03,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:45:03,465 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:45:03,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:45:03,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1333751677, now seen corresponding path program 1 times [2020-10-27 05:45:03,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:45:03,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269370735] [2020-10-27 05:45:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:45:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:45:03,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:07,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:08,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:45:08,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 05:45:08,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:45:08,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:45:08,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:45:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:45:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:45:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:45:08,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:45:11,845 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification that was a NOOP. DAG size: 682 [2020-10-27 05:45:11,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:45:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:45:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:11,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:45:11,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:45:11,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:45:11,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 05:45:11,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:45:11,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:45:11,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:45:11,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:45:11,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:45:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:45:11,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269370735] [2020-10-27 05:45:11,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:45:11,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:45:11,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115847134] [2020-10-27 05:45:11,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:45:11,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:45:11,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:45:11,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:45:11,978 INFO L87 Difference]: Start difference. First operand 2964 states and 3860 transitions. Second operand 11 states. [2020-10-27 05:45:18,315 WARN L193 SmtUtils]: Spent 6.16 s on a formula simplification. DAG size of input: 698 DAG size of output: 694 [2020-10-27 05:45:40,294 WARN L193 SmtUtils]: Spent 5.91 s on a formula simplification. DAG size of input: 694 DAG size of output: 690 [2020-10-27 05:45:43,993 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification that was a NOOP. DAG size: 686 [2020-10-27 05:45:49,501 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification that was a NOOP. DAG size: 692 [2020-10-27 05:45:54,171 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 688