/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/heavy-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:17:20,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:17:20,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:17:20,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:17:20,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:17:20,680 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:17:20,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:17:20,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:17:20,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:17:20,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:17:20,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:17:20,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:17:20,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:17:20,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:17:20,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:17:20,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:17:20,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:17:20,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:17:20,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:17:20,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:17:20,687 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:17:20,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:17:20,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:17:20,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:20,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:17:20,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:17:20,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:17:20,689 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:17:21,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:17:21,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:17:21,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:17:21,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:17:21,112 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:17:21,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/heavy-2.c [2021-02-21 21:17:21,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94cc1d82e/a069e5f3019c48f6873b90a0524739f5/FLAG33fa14fd2 [2021-02-21 21:17:21,824 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:17:21,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c [2021-02-21 21:17:21,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94cc1d82e/a069e5f3019c48f6873b90a0524739f5/FLAG33fa14fd2 [2021-02-21 21:17:22,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94cc1d82e/a069e5f3019c48f6873b90a0524739f5 [2021-02-21 21:17:22,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:17:22,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:17:22,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:22,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:17:22,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:17:22,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46218760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22, skipping insertion in model container [2021-02-21 21:17:22,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:17:22,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:17:22,427 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c[600,613] [2021-02-21 21:17:22,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:22,526 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:17:22,545 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c[600,613] [2021-02-21 21:17:22,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:22,667 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:17:22,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22 WrapperNode [2021-02-21 21:17:22,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:22,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:17:22,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:17:22,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:17:22,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:17:22,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:17:22,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:17:22,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:17:22,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-21 21:17:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:17:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:17:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:17:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:17:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:17:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:17:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:17:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:17:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:17:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:17:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:17:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:17:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:17:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-02-21 21:17:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:17:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:17:23,314 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:17:23,314 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 21:17:23,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:23 BoogieIcfgContainer [2021-02-21 21:17:23,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:17:23,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:17:23,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:17:23,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:17:23,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:22" (1/3) ... [2021-02-21 21:17:23,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3dcfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:23, skipping insertion in model container [2021-02-21 21:17:23,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (2/3) ... [2021-02-21 21:17:23,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3dcfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:23, skipping insertion in model container [2021-02-21 21:17:23,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:23" (3/3) ... [2021-02-21 21:17:23,326 INFO L111 eAbstractionObserver]: Analyzing ICFG heavy-2.c [2021-02-21 21:17:23,333 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:17:23,338 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:17:23,357 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:17:23,393 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:17:23,393 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:17:23,393 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:17:23,393 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:17:23,394 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:17:23,394 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:17:23,394 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:17:23,394 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:17:23,416 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2021-02-21 21:17:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 21:17:23,426 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:23,427 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] [2021-02-21 21:17:23,427 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:23,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1876603401, now seen corresponding path program 1 times [2021-02-21 21:17:23,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:23,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712277607] [2021-02-21 21:17:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:23,535 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:23,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:23,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:23,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:23,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:23,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712277607] [2021-02-21 21:17:23,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:23,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:17:23,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910252501] [2021-02-21 21:17:23,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:17:23,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:23,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:17:23,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:23,853 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 3 states. [2021-02-21 21:17:24,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:24,032 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2021-02-21 21:17:24,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:17:24,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-02-21 21:17:24,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:24,043 INFO L225 Difference]: With dead ends: 104 [2021-02-21 21:17:24,044 INFO L226 Difference]: Without dead ends: 61 [2021-02-21 21:17:24,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-21 21:17:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 44. [2021-02-21 21:17:24,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-21 21:17:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2021-02-21 21:17:24,131 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 25 [2021-02-21 21:17:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:24,132 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2021-02-21 21:17:24,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:17:24,133 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2021-02-21 21:17:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 21:17:24,134 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:24,134 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] [2021-02-21 21:17:24,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:17:24,135 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:24,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1876644724, now seen corresponding path program 1 times [2021-02-21 21:17:24,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:24,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516580925] [2021-02-21 21:17:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:24,152 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:24,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:24,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:24,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:24,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:24,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:24,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:24,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:24,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:24,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:24,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516580925] [2021-02-21 21:17:24,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:24,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:17:24,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823160946] [2021-02-21 21:17:24,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:17:24,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:24,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:17:24,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:17:24,338 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 4 states. [2021-02-21 21:17:24,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:24,592 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2021-02-21 21:17:24,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:17:24,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-21 21:17:24,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:24,599 INFO L225 Difference]: With dead ends: 93 [2021-02-21 21:17:24,600 INFO L226 Difference]: Without dead ends: 90 [2021-02-21 21:17:24,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:17:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-02-21 21:17:24,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 45. [2021-02-21 21:17:24,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-21 21:17:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-02-21 21:17:24,623 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 25 [2021-02-21 21:17:24,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:24,623 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-02-21 21:17:24,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:17:24,623 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-02-21 21:17:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-21 21:17:24,625 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:24,625 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] [2021-02-21 21:17:24,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:17:24,625 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash 823473260, now seen corresponding path program 1 times [2021-02-21 21:17:24,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:24,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308266850] [2021-02-21 21:17:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:24,651 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:17:24,653 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:24,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:24,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:24,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:24,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:24,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:24,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:24,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:24,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:24,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308266850] [2021-02-21 21:17:24,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:24,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:17:24,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692507189] [2021-02-21 21:17:24,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:17:24,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:24,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:17:24,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:17:24,804 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 4 states. [2021-02-21 21:17:25,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:25,029 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2021-02-21 21:17:25,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:17:25,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2021-02-21 21:17:25,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:25,033 INFO L225 Difference]: With dead ends: 105 [2021-02-21 21:17:25,033 INFO L226 Difference]: Without dead ends: 83 [2021-02-21 21:17:25,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:17:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-21 21:17:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 46. [2021-02-21 21:17:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-21 21:17:25,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-02-21 21:17:25,056 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 31 [2021-02-21 21:17:25,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:25,057 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-02-21 21:17:25,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:17:25,057 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-02-21 21:17:25,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-21 21:17:25,060 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:25,060 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] [2021-02-21 21:17:25,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:17:25,061 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:25,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:25,061 INFO L82 PathProgramCache]: Analyzing trace with hash 885163707, now seen corresponding path program 1 times [2021-02-21 21:17:25,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:25,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588705346] [2021-02-21 21:17:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:25,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:25,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:25,080 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:17:25,084 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:17:25,088 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:25,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:25,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:25,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:25,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:25,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:25,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:25,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:25,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:25,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:25,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588705346] [2021-02-21 21:17:25,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:25,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:17:25,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283342928] [2021-02-21 21:17:25,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:17:25,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:25,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:17:25,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:17:25,227 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 4 states. [2021-02-21 21:17:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:25,389 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2021-02-21 21:17:25,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:17:25,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2021-02-21 21:17:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:25,391 INFO L225 Difference]: With dead ends: 84 [2021-02-21 21:17:25,391 INFO L226 Difference]: Without dead ends: 61 [2021-02-21 21:17:25,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:17:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-21 21:17:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2021-02-21 21:17:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-02-21 21:17:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-02-21 21:17:25,400 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 37 [2021-02-21 21:17:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:25,400 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-02-21 21:17:25,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:17:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-02-21 21:17:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-21 21:17:25,401 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:25,402 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] [2021-02-21 21:17:25,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:17:25,404 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:25,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:25,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2143964361, now seen corresponding path program 1 times [2021-02-21 21:17:25,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:25,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399164911] [2021-02-21 21:17:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:25,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:25,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:25,480 WARN L141 QuantifierPusher]: treesize reduction 30, result has 86.4 percent of original size [2021-02-21 21:17:25,510 INFO L424 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 2, 2, 1] term [2021-02-21 21:17:25,512 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-21 21:17:25,521 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:25,535 WARN L147 QuantifierPusher]: treesize reduction 30, result has 86.4 percent of original size 191 [2021-02-21 21:17:26,414 WARN L202 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 91