/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-crafted-1/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:02:28,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:02:28,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:02:28,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 22:02:28,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:02:28,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:02:28,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:02:28,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:02:28,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:02:28,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:02:28,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:02:28,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:02:28,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:02:28,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:02:28,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:02:28,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:02:28,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 22:02:28,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:02:28,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:02:28,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:02:28,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:02:28,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:02:28,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:02:28,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:02:28,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:02:28,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:02:28,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:02:28,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:02:28,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:02:28,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:02:28,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:02:28,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:02:28,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:02:28,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:02:28,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:02:28,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:02:28,969 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:02:28,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:02:28,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:02:28,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:02:28,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:02:28,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:02:28,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:02:28,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:02:29,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:02:29,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:02:29,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:02:29,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:02:29,468 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:02:29,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-10-23 22:02:29,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9046d417a/b8da252aea204e7599ec7bac33b89227/FLAG21c711708 [2020-10-23 22:02:30,110 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:02:30,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-10-23 22:02:30,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9046d417a/b8da252aea204e7599ec7bac33b89227/FLAG21c711708 [2020-10-23 22:02:30,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9046d417a/b8da252aea204e7599ec7bac33b89227 [2020-10-23 22:02:30,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:02:30,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:02:30,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:02:30,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:02:30,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:02:30,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:02:30" (1/1) ... [2020-10-23 22:02:30,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ebd4b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30, skipping insertion in model container [2020-10-23 22:02:30,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:02:30" (1/1) ... [2020-10-23 22:02:30,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:02:30,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:02:30,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:02:30,732 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:02:30,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:02:30,769 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:02:30,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30 WrapperNode [2020-10-23 22:02:30,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:02:30,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:02:30,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:02:30,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:02:30,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30" (1/1) ... [2020-10-23 22:02:30,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30" (1/1) ... [2020-10-23 22:02:30,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30" (1/1) ... [2020-10-23 22:02:30,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30" (1/1) ... [2020-10-23 22:02:30,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30" (1/1) ... [2020-10-23 22:02:30,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30" (1/1) ... [2020-10-23 22:02:30,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30" (1/1) ... [2020-10-23 22:02:30,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:02:30,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:02:30,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:02:30,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:02:30,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30" (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 [2020-10-23 22:02:30,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:02:30,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:02:30,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:02:30,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:02:30,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 22:02:30,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:02:30,883 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:02:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:02:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:02:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:02:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:02:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:02:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 22:02:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:02:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:02:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:02:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:02:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:02:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:02:30,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:02:31,197 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:02:31,197 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 22:02:31,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:02:31 BoogieIcfgContainer [2020-10-23 22:02:31,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:02:31,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:02:31,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:02:31,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:02:31,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:02:30" (1/3) ... [2020-10-23 22:02:31,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348c6e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:02:31, skipping insertion in model container [2020-10-23 22:02:31,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:30" (2/3) ... [2020-10-23 22:02:31,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348c6e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:02:31, skipping insertion in model container [2020-10-23 22:02:31,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:02:31" (3/3) ... [2020-10-23 22:02:31,211 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-10-23 22:02:31,227 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:02:31,233 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:02:31,267 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:02:31,326 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:02:31,326 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:02:31,327 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:02:31,327 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:02:31,327 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:02:31,327 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:02:31,327 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:02:31,327 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:02:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-23 22:02:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 22:02:31,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:02:31,362 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] [2020-10-23 22:02:31,363 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:02:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:02:31,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2124698403, now seen corresponding path program 1 times [2020-10-23 22:02:31,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:02:31,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696655837] [2020-10-23 22:02:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:02:31,467 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:02:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:02:31,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:02:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:02:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:02:31,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696655837] [2020-10-23 22:02:31,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:02:31,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 22:02:31,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529909942] [2020-10-23 22:02:31,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 22:02:31,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:02:31,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 22:02:31,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:02:31,930 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2020-10-23 22:02:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:02:32,030 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-10-23 22:02:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 22:02:32,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-23 22:02:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:02:32,041 INFO L225 Difference]: With dead ends: 61 [2020-10-23 22:02:32,042 INFO L226 Difference]: Without dead ends: 37 [2020-10-23 22:02:32,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:02:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-23 22:02:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-23 22:02:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-23 22:02:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-23 22:02:32,097 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 28 [2020-10-23 22:02:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:02:32,098 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-23 22:02:32,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 22:02:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-23 22:02:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 22:02:32,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:02:32,100 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] [2020-10-23 22:02:32,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:02:32,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:02:32,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:02:32,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1454540118, now seen corresponding path program 1 times [2020-10-23 22:02:32,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:02:32,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358046554] [2020-10-23 22:02:32,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:02:32,105 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:02:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:02:32,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:02:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:02:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:02:32,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358046554] [2020-10-23 22:02:32,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:02:32,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:02:32,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753980107] [2020-10-23 22:02:32,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:02:32,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:02:32,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:02:32,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:02:32,455 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 10 states. [2020-10-23 22:02:33,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:02:33,123 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2020-10-23 22:02:33,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 22:02:33,123 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-23 22:02:33,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:02:33,126 INFO L225 Difference]: With dead ends: 89 [2020-10-23 22:02:33,126 INFO L226 Difference]: Without dead ends: 71 [2020-10-23 22:02:33,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-23 22:02:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-23 22:02:33,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 39. [2020-10-23 22:02:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-23 22:02:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-23 22:02:33,144 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 28 [2020-10-23 22:02:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:02:33,145 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-23 22:02:33,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:02:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-23 22:02:33,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-23 22:02:33,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:02:33,146 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] [2020-10-23 22:02:33,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:02:33,147 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:02:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:02:33,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1716557418, now seen corresponding path program 1 times [2020-10-23 22:02:33,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:02:33,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771636759] [2020-10-23 22:02:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:02:35,258 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:02:36,142 WARN L193 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:02:36,157 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:02:36,160 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:02:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:02:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:02:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:02:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:02:36,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771636759] [2020-10-23 22:02:36,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:02:36,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 22:02:36,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123135835] [2020-10-23 22:02:36,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 22:02:36,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:02:36,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 22:02:36,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:02:36,698 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 14 states. [2020-10-23 22:02:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:02:39,606 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-10-23 22:02:39,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 22:02:39,607 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-23 22:02:39,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:02:39,609 INFO L225 Difference]: With dead ends: 72 [2020-10-23 22:02:39,609 INFO L226 Difference]: Without dead ends: 66 [2020-10-23 22:02:39,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-23 22:02:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-23 22:02:39,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 42. [2020-10-23 22:02:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-23 22:02:39,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-10-23 22:02:39,627 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 32 [2020-10-23 22:02:39,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:02:39,627 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-10-23 22:02:39,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 22:02:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-10-23 22:02:39,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 22:02:39,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:02:39,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:02:39,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:02:39,629 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:02:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:02:39,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1738014078, now seen corresponding path program 2 times [2020-10-23 22:02:39,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:02:39,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106645243] [2020-10-23 22:02:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:02:45,838 WARN L193 SmtUtils]: Spent 6.21 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:02:52,052 WARN L193 SmtUtils]: Spent 6.21 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:02:52,780 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:02:54,879 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:02:56,948 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:02:57,677 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:02:59,766 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:03:01,840 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:03:02,569 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:03:04,649 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:03:05,389 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:03:05,396 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:03:05,400 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:03:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:03:05,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:03:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:03:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:03:05,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106645243] [2020-10-23 22:03:05,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:03:05,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:03:05,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991316526] [2020-10-23 22:03:05,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:03:05,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:03:05,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:03:05,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:03:05,565 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 5 states. [2020-10-23 22:03:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:03:05,849 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-10-23 22:03:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:03:05,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-23 22:03:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:03:05,851 INFO L225 Difference]: With dead ends: 64 [2020-10-23 22:03:05,851 INFO L226 Difference]: Without dead ends: 49 [2020-10-23 22:03:05,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:03:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-23 22:03:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-23 22:03:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-23 22:03:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-23 22:03:05,874 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 36 [2020-10-23 22:03:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:03:05,875 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-23 22:03:05,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:03:05,875 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-23 22:03:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 22:03:05,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:03:05,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:03:05,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:03:05,877 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:03:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:03:05,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1007706177, now seen corresponding path program 1 times [2020-10-23 22:03:05,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:03:05,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544943772] [2020-10-23 22:03:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:03:07,947 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:03:12,070 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:03:12,789 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:03:14,858 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:03:15,562 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:03:19,713 WARN L193 SmtUtils]: Spent 4.15 s on a formula simplification that was a NOOP. DAG size: 24 [2020-10-23 22:03:22,410 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 2921 DAG size of output: 93 [2020-10-23 22:03:23,423 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2020-10-23 22:03:23,425 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:03:23,427 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:03:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:03:23,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:03:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:03:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:03:23,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544943772] [2020-10-23 22:03:23,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:03:23,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 22:03:23,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385051185] [2020-10-23 22:03:23,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 22:03:23,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:03:23,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 22:03:23,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:03:23,792 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 9 states. [2020-10-23 22:03:28,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:03:28,659 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-10-23 22:03:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 22:03:28,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-23 22:03:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:03:28,661 INFO L225 Difference]: With dead ends: 64 [2020-10-23 22:03:28,661 INFO L226 Difference]: Without dead ends: 49 [2020-10-23 22:03:28,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:03:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-23 22:03:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2020-10-23 22:03:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-23 22:03:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-23 22:03:28,681 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 37 [2020-10-23 22:03:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:03:28,681 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-23 22:03:28,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 22:03:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-23 22:03:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-23 22:03:28,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:03:28,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:03:28,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:03:28,683 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:03:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:03:28,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1709925144, now seen corresponding path program 1 times [2020-10-23 22:03:28,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:03:28,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185448766] [2020-10-23 22:03:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:03:30,777 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:03:34,936 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:03:35,684 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:03:37,768 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:03:38,496 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:03:43,944 WARN L193 SmtUtils]: Spent 5.36 s on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2020-10-23 22:03:46,091 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-23 22:03:48,944 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 924 DAG size of output: 100 [2020-10-23 22:03:48,946 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:03:48,947 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:03:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:03:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:03:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:03:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:03:49,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185448766] [2020-10-23 22:03:49,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:03:49,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:03:49,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641955346] [2020-10-23 22:03:49,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:03:49,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:03:49,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:03:49,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:03:49,077 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 5 states. [2020-10-23 22:03:49,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:03:49,334 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-10-23 22:03:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:03:49,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-23 22:03:49,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:03:49,337 INFO L225 Difference]: With dead ends: 62 [2020-10-23 22:03:49,337 INFO L226 Difference]: Without dead ends: 47 [2020-10-23 22:03:49,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:03:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-23 22:03:49,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-23 22:03:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-23 22:03:49,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-23 22:03:49,357 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 38 [2020-10-23 22:03:49,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:03:49,358 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-23 22:03:49,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:03:49,358 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-23 22:03:49,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-23 22:03:49,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:03:49,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:03:49,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 22:03:49,360 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:03:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:03:49,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1515992760, now seen corresponding path program 1 times [2020-10-23 22:03:49,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:03:49,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205065614] [2020-10-23 22:03:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:03:57,694 WARN L193 SmtUtils]: Spent 8.33 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:04:03,917 WARN L193 SmtUtils]: Spent 6.22 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:04:04,646 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:04:06,731 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:04:08,812 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:04:09,538 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:04:13,703 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:04:17,866 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 22:04:18,806 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-23 22:04:19,886 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-23 22:04:19,888 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:04:19,889 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:04:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:04:20,386 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2020-10-23 22:04:20,544 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 24 [2020-10-23 22:04:20,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:04:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:04:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:04:20,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205065614] [2020-10-23 22:04:20,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:04:20,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 22:04:20,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133179012] [2020-10-23 22:04:20,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 22:04:20,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:04:20,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 22:04:20,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-23 22:04:20,644 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 16 states. [2020-10-23 22:04:23,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:04:23,813 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-10-23 22:04:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 22:04:23,814 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-10-23 22:04:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:04:23,815 INFO L225 Difference]: With dead ends: 70 [2020-10-23 22:04:23,816 INFO L226 Difference]: Without dead ends: 64 [2020-10-23 22:04:23,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-10-23 22:04:23,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-23 22:04:23,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-10-23 22:04:23,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-23 22:04:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-10-23 22:04:23,842 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 38 [2020-10-23 22:04:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:04:23,842 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-10-23 22:04:23,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 22:04:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-10-23 22:04:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-23 22:04:23,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:04:23,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:04:23,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 22:04:23,845 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:04:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:04:23,845 INFO L82 PathProgramCache]: Analyzing trace with hash 824100556, now seen corresponding path program 2 times [2020-10-23 22:04:23,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:04:23,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468168685] [2020-10-23 22:04:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:04:28,041 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:04:34,272 WARN L193 SmtUtils]: Spent 6.23 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:04:35,023 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:04:41,360 WARN L193 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-10-23 22:04:43,520 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 26 [2020-10-23 22:05:08,033 WARN L193 SmtUtils]: Spent 24.47 s on a formula simplification. DAG size of input: 10005 DAG size of output: 133 [2020-10-23 22:05:10,159 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:05:12,248 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:05:13,014 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:05:15,146 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:05:16,307 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-23 22:05:18,423 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:05:19,182 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:05:20,329 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-23 22:05:32,860 WARN L193 SmtUtils]: Spent 12.52 s on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-10-23 22:05:35,021 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 33 [2020-10-23 22:05:38,298 WARN L193 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 180 DAG size of output: 142 [2020-10-23 22:05:38,302 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:05:38,303 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:38,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468168685] [2020-10-23 22:05:38,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:38,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 22:05:38,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122148606] [2020-10-23 22:05:38,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 22:05:38,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:38,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 22:05:38,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 22:05:38,445 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 6 states. [2020-10-23 22:05:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:05:38,841 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-10-23 22:05:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:05:38,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-10-23 22:05:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:05:38,844 INFO L225 Difference]: With dead ends: 70 [2020-10-23 22:05:38,844 INFO L226 Difference]: Without dead ends: 55 [2020-10-23 22:05:38,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:05:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-23 22:05:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-10-23 22:05:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-23 22:05:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-23 22:05:38,881 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 42 [2020-10-23 22:05:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:05:38,881 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-23 22:05:38,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 22:05:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-23 22:05:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 22:05:38,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:38,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:05:38,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 22:05:38,888 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1553809229, now seen corresponding path program 1 times [2020-10-23 22:05:38,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:38,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473098644] [2020-10-23 22:05:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:43,066 WARN L193 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:05:47,248 WARN L193 SmtUtils]: Spent 4.18 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:05:48,033 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:05:50,260 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-10-23 22:05:52,076 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 186 DAG size of output: 126 [2020-10-23 22:05:52,884 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:05:54,001 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-23 22:05:58,206 WARN L193 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:06:00,301 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 22:06:01,343 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-23 22:06:03,467 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:06:04,513 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-23 22:06:06,610 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 24 [2020-10-23 22:06:07,681 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2020-10-23 22:06:09,817 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-23 22:06:11,979 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-23 22:06:18,707 WARN L193 SmtUtils]: Spent 6.72 s on a formula simplification. DAG size of input: 171 DAG size of output: 134 [2020-10-23 22:06:18,711 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:06:18,712 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:19,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:06:19,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473098644] [2020-10-23 22:06:19,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:19,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:06:19,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901500240] [2020-10-23 22:06:19,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:06:19,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:19,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:06:19,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:06:19,231 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2020-10-23 22:06:19,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:19,886 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-23 22:06:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 22:06:19,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-23 22:06:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:19,888 INFO L225 Difference]: With dead ends: 68 [2020-10-23 22:06:19,888 INFO L226 Difference]: Without dead ends: 53 [2020-10-23 22:06:19,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-23 22:06:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-23 22:06:19,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-23 22:06:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-23 22:06:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-10-23 22:06:19,910 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 43 [2020-10-23 22:06:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:19,910 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-10-23 22:06:19,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:06:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-10-23 22:06:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-23 22:06:19,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:19,911 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:06:19,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 22:06:19,911 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:19,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:19,912 INFO L82 PathProgramCache]: Analyzing trace with hash -387641114, now seen corresponding path program 1 times [2020-10-23 22:06:19,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:19,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884963653] [2020-10-23 22:06:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:22,088 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:06:23,424 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-23 22:06:27,585 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:06:29,676 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:06:30,490 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:06:38,838 WARN L193 SmtUtils]: Spent 8.35 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-10-23 22:06:40,971 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 26 [2020-10-23 22:07:02,917 WARN L193 SmtUtils]: Spent 21.90 s on a formula simplification. DAG size of input: 9592 DAG size of output: 134 [2020-10-23 22:07:03,772 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:07:05,905 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:07:07,009 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-23 22:07:08,432 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2020-10-23 22:07:10,594 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 22:07:11,677 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-23 22:07:13,791 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-23 22:07:15,213 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 100 DAG size of output: 100 [2020-10-23 22:07:21,466 WARN L193 SmtUtils]: Spent 6.25 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-23 22:07:25,667 WARN L193 SmtUtils]: Spent 4.20 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-23 22:07:57,813 WARN L193 SmtUtils]: Spent 32.10 s on a formula simplification. DAG size of input: 10217 DAG size of output: 113 [2020-10-23 22:07:57,815 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:07:57,816 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:07:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:58,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:07:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:07:58,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884963653] [2020-10-23 22:07:58,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:07:58,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 22:07:58,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709820773] [2020-10-23 22:07:58,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 22:07:58,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:07:58,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 22:07:58,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-23 22:07:58,402 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 16 states. [2020-10-23 22:07:59,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:07:59,738 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-23 22:07:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 22:07:59,739 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-23 22:07:59,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:07:59,741 INFO L225 Difference]: With dead ends: 77 [2020-10-23 22:07:59,741 INFO L226 Difference]: Without dead ends: 71 [2020-10-23 22:07:59,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2020-10-23 22:07:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-23 22:07:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2020-10-23 22:07:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-23 22:07:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-23 22:07:59,773 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 44 [2020-10-23 22:07:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:07:59,775 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-23 22:07:59,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 22:07:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-23 22:07:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-23 22:07:59,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:07:59,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:07:59,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 22:07:59,778 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:07:59,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:07:59,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1043519994, now seen corresponding path program 2 times [2020-10-23 22:07:59,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:07:59,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288845139] [2020-10-23 22:07:59,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:08:01,914 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:08:03,401 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-23 22:08:09,635 WARN L193 SmtUtils]: Spent 6.23 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:08:17,941 WARN L193 SmtUtils]: Spent 8.31 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:08:18,842 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:08:23,117 WARN L193 SmtUtils]: Spent 4.27 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-10-23 22:08:27,310 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification that was a NOOP. DAG size: 26 [2020-10-23 22:08:29,703 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 186 DAG size of output: 112 [2020-10-23 22:08:33,984 WARN L193 SmtUtils]: Spent 4.28 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:08:34,087 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:08:37,029 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 189 DAG size of output: 116 [2020-10-23 22:08:39,123 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:08:41,214 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:08:42,070 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:08:45,987 WARN L193 SmtUtils]: Spent 3.81 s on a formula simplification. DAG size of input: 2936 DAG size of output: 96 [2020-10-23 22:08:48,105 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-23 22:08:52,274 WARN L193 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-23 22:08:55,702 WARN L193 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 923 DAG size of output: 99 [2020-10-23 22:08:56,654 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:09:00,854 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:09:02,949 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 22:09:04,119 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-23 22:09:08,553 WARN L193 SmtUtils]: Spent 4.33 s on a formula simplification. DAG size of input: 2940 DAG size of output: 100 [2020-10-23 22:09:10,705 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-23 22:09:10,812 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-23 22:09:21,110 WARN L193 SmtUtils]: Spent 10.29 s on a formula simplification. DAG size of input: 171 DAG size of output: 129 [2020-10-23 22:09:21,112 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:09:21,136 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:09:21,138 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:21,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:21,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288845139] [2020-10-23 22:09:21,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:21,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:09:21,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385639736] [2020-10-23 22:09:21,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:09:21,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:21,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:09:21,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:09:21,363 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 7 states. [2020-10-23 22:09:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:21,889 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2020-10-23 22:09:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 22:09:21,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-23 22:09:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:21,892 INFO L225 Difference]: With dead ends: 73 [2020-10-23 22:09:21,892 INFO L226 Difference]: Without dead ends: 58 [2020-10-23 22:09:21,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-23 22:09:21,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-23 22:09:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-23 22:09:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-23 22:09:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-10-23 22:09:21,927 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 48 [2020-10-23 22:09:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:21,927 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-10-23 22:09:21,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:09:21,927 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-10-23 22:09:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-23 22:09:21,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:21,937 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:09:21,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 22:09:21,938 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:21,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:21,939 INFO L82 PathProgramCache]: Analyzing trace with hash 953226053, now seen corresponding path program 1 times [2020-10-23 22:09:21,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:21,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555787808] [2020-10-23 22:09:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:26,196 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:09:29,832 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-23 22:09:36,057 WARN L193 SmtUtils]: Spent 6.22 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:09:44,350 WARN L193 SmtUtils]: Spent 8.29 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:09:45,310 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:09:55,824 WARN L193 SmtUtils]: Spent 10.51 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-10-23 22:10:02,078 WARN L193 SmtUtils]: Spent 6.25 s on a formula simplification that was a NOOP. DAG size: 26 [2020-10-23 22:10:10,752 WARN L193 SmtUtils]: Spent 8.66 s on a formula simplification. DAG size of input: 3266 DAG size of output: 126 [2020-10-23 22:10:19,116 WARN L193 SmtUtils]: Spent 8.36 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:10:25,410 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:10:28,674 WARN L193 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 189 DAG size of output: 116 [2020-10-23 22:10:30,763 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:10:32,850 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:10:33,806 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:10:35,936 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 24 [2020-10-23 22:10:37,225 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-23 22:10:39,358 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:10:41,455 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 22:10:44,529 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 920 DAG size of output: 96 [2020-10-23 22:10:46,650 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-23 22:10:48,286 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2020-10-23 22:10:52,488 WARN L193 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:10:54,586 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 22:10:55,926 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-23 22:10:58,055 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 24 [2020-10-23 22:11:00,429 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 906 DAG size of output: 94 [2020-10-23 22:11:04,256 WARN L193 SmtUtils]: Spent 3.72 s on a formula simplification. DAG size of input: 924 DAG size of output: 100 [2020-10-23 22:11:04,423 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-23 22:11:06,785 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-23 22:11:08,807 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 190 DAG size of output: 101 [2020-10-23 22:11:15,101 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:11:17,224 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 22:11:36,737 WARN L193 SmtUtils]: Spent 19.47 s on a formula simplification. DAG size of input: 9483 DAG size of output: 118 [2020-10-23 22:11:36,739 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:11:36,740 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:11:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:11:37,616 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-10-23 22:11:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:11:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:11:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:11:37,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555787808] [2020-10-23 22:11:37,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:11:37,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-23 22:11:37,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236603084] [2020-10-23 22:11:37,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-23 22:11:37,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:11:37,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-23 22:11:37,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-10-23 22:11:37,906 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 20 states. [2020-10-23 22:11:39,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:11:39,951 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-10-23 22:11:39,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 22:11:39,953 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 49 [2020-10-23 22:11:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:11:39,955 INFO L225 Difference]: With dead ends: 72 [2020-10-23 22:11:39,955 INFO L226 Difference]: Without dead ends: 66 [2020-10-23 22:11:39,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=198, Invalid=1062, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 22:11:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-23 22:11:39,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2020-10-23 22:11:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-23 22:11:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-23 22:11:39,982 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 49 [2020-10-23 22:11:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:11:39,982 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-23 22:11:39,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-23 22:11:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-23 22:11:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-23 22:11:39,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:11:39,983 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:11:39,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-23 22:11:39,984 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:11:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:11:39,984 INFO L82 PathProgramCache]: Analyzing trace with hash -645360423, now seen corresponding path program 2 times [2020-10-23 22:11:39,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:11:39,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549011578] [2020-10-23 22:11:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:11:42,127 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:11:44,282 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:11:48,095 WARN L193 SmtUtils]: Spent 3.81 s on a formula simplification. DAG size of input: 925 DAG size of output: 101 [2020-10-23 22:11:52,255 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 22:12:00,537 WARN L193 SmtUtils]: Spent 8.28 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 22:12:03,171 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 183 DAG size of output: 132 [2020-10-23 22:12:11,456 WARN L193 SmtUtils]: Spent 8.28 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:12:17,679 WARN L193 SmtUtils]: Spent 6.22 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:12:18,717 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:12:25,082 WARN L193 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-10-23 22:12:31,327 WARN L193 SmtUtils]: Spent 6.24 s on a formula simplification that was a NOOP. DAG size: 26 [2020-10-23 22:12:33,264 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 186 DAG size of output: 110 [2020-10-23 22:12:43,676 WARN L193 SmtUtils]: Spent 10.41 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:12:47,881 WARN L193 SmtUtils]: Spent 4.20 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 22:12:52,831 WARN L193 SmtUtils]: Spent 4.93 s on a formula simplification. DAG size of input: 1253 DAG size of output: 100 [2020-10-23 22:12:54,940 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:12:55,990 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:13:00,016 WARN L193 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 2921 DAG size of output: 93 [2020-10-23 22:13:02,155 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:13:04,258 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 22:13:08,602 WARN L193 SmtUtils]: Spent 4.32 s on a formula simplification. DAG size of input: 2936 DAG size of output: 96 [2020-10-23 22:13:10,729 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-23 22:13:17,136 WARN L193 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 2939 DAG size of output: 99 [2020-10-23 22:13:19,225 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-23 22:13:20,340 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-23 22:13:21,863 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-23 22:13:23,399 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2020-10-23 22:13:25,509 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-23 22:13:27,385 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 100 DAG size of output: 100 [2020-10-23 22:13:31,585 WARN L193 SmtUtils]: Spent 4.20 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-23 22:13:35,549 WARN L193 SmtUtils]: Spent 3.96 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-23 22:13:49,911 WARN L193 SmtUtils]: Spent 14.35 s on a formula simplification. DAG size of input: 3270 DAG size of output: 102 [2020-10-23 22:13:56,207 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-23 22:14:20,874 WARN L193 SmtUtils]: Spent 24.56 s on a formula simplification. DAG size of input: 10247 DAG size of output: 121 [2020-10-23 22:14:20,876 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:15:34,528 WARN L193 SmtUtils]: Spent 1.23 m on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-23 22:15:47,562 WARN L193 SmtUtils]: Spent 13.03 s on a formula simplification that was a NOOP. DAG size: 51