/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/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:29:22,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:29:22,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:29:22,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:29:22,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:29:22,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:29:22,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:29:22,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:29:22,982 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:29:22,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:29:22,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:29:22,985 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:29:22,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:29:22,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:29:22,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:29:22,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:29:22,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:29:22,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:29:22,987 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:29:22,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:29:22,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:29:22,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:29:22,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:29:22,988 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:29:22,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:29:22,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:29:22,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:29:22,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:29:22,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:29:22,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:29:22,990 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:29:23,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:29:23,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:29:23,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:29:23,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:29:23,521 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:29:23,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2021-02-21 21:29:23,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63e0a18c3/c4855864608046d081bd7e70a9902957/FLAGb413700dc [2021-02-21 21:29:24,599 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:29:24,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2021-02-21 21:29:24,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63e0a18c3/c4855864608046d081bd7e70a9902957/FLAGb413700dc [2021-02-21 21:29:24,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63e0a18c3/c4855864608046d081bd7e70a9902957 [2021-02-21 21:29:24,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:29:24,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:29:24,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:29:24,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:29:24,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:29:24,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:29:24" (1/1) ... [2021-02-21 21:29:24,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51717d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:24, skipping insertion in model container [2021-02-21 21:29:24,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:29:24" (1/1) ... [2021-02-21 21:29:24,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:29:24,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:29:25,139 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i[895,908] [2021-02-21 21:29:25,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:29:25,169 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:29:25,187 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i[895,908] [2021-02-21 21:29:25,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:29:25,217 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:29:25,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25 WrapperNode [2021-02-21 21:29:25,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:29:25,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:29:25,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:29:25,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:29:25,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... [2021-02-21 21:29:25,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:29:25,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:29:25,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:29:25,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:29:25,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:29:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:29:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:29:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:29:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:29:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:29:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:29:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:29:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:29:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:29:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:29:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:29:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:29:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:29:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:29:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:29:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:29:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:29:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:29:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:29:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:29:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:29:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:29:25,894 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:29:25,900 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:29:25,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:29:25 BoogieIcfgContainer [2021-02-21 21:29:25,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:29:25,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:29:25,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:29:25,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:29:25,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:29:24" (1/3) ... [2021-02-21 21:29:25,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8065b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:29:25, skipping insertion in model container [2021-02-21 21:29:25,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:25" (2/3) ... [2021-02-21 21:29:25,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8065b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:29:25, skipping insertion in model container [2021-02-21 21:29:25,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:29:25" (3/3) ... [2021-02-21 21:29:25,939 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2021-02-21 21:29:25,965 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:29:25,983 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:29:26,054 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:29:26,109 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:29:26,109 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:29:26,109 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:29:26,110 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:29:26,110 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:29:26,110 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:29:26,110 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:29:26,110 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:29:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2021-02-21 21:29:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 21:29:26,177 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:26,180 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] [2021-02-21 21:29:26,181 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:26,197 INFO L82 PathProgramCache]: Analyzing trace with hash 855051478, now seen corresponding path program 1 times [2021-02-21 21:29:26,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:26,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876865651] [2021-02-21 21:29:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:26,348 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:29:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:26,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:26,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:26,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:26,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:26,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:26,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:26,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:26,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876865651] [2021-02-21 21:29:26,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:26,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:29:26,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969368375] [2021-02-21 21:29:26,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:29:26,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:26,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:29:26,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:29:26,732 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2021-02-21 21:29:26,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:26,985 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-02-21 21:29:26,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:29:26,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2021-02-21 21:29:26,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:27,001 INFO L225 Difference]: With dead ends: 61 [2021-02-21 21:29:27,002 INFO L226 Difference]: Without dead ends: 38 [2021-02-21 21:29:27,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:29:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-21 21:29:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-21 21:29:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-21 21:29:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-02-21 21:29:27,128 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 30 [2021-02-21 21:29:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:27,129 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-02-21 21:29:27,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:29:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-02-21 21:29:27,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 21:29:27,133 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:27,133 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] [2021-02-21 21:29:27,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:29:27,134 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:27,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:27,137 INFO L82 PathProgramCache]: Analyzing trace with hash 540130817, now seen corresponding path program 1 times [2021-02-21 21:29:27,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:27,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035268793] [2021-02-21 21:29:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:27,152 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:29:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:27,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:27,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:29:27,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:29:27,339 WARN L141 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size [2021-02-21 21:29:27,343 WARN L147 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size 31 [2021-02-21 21:29:27,380 WARN L141 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size [2021-02-21 21:29:27,384 WARN L147 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size 27 [2021-02-21 21:29:27,432 WARN L141 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-02-21 21:29:27,436 WARN L147 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size 23 [2021-02-21 21:29:27,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:27,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:27,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:27,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:27,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:27,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:27,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035268793] [2021-02-21 21:29:27,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:27,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 21:29:27,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466032016] [2021-02-21 21:29:27,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 21:29:27,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:27,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 21:29:27,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:29:27,581 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 10 states. [2021-02-21 21:29:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:28,221 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-02-21 21:29:28,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 21:29:28,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2021-02-21 21:29:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:28,224 INFO L225 Difference]: With dead ends: 47 [2021-02-21 21:29:28,224 INFO L226 Difference]: Without dead ends: 41 [2021-02-21 21:29:28,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-02-21 21:29:28,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-21 21:29:28,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-02-21 21:29:28,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-21 21:29:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-02-21 21:29:28,242 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 30 [2021-02-21 21:29:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:28,242 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-02-21 21:29:28,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 21:29:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-02-21 21:29:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:29:28,244 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:28,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:28,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:29:28,245 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:28,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:28,246 INFO L82 PathProgramCache]: Analyzing trace with hash 881077893, now seen corresponding path program 1 times [2021-02-21 21:29:28,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:28,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187527662] [2021-02-21 21:29:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:30,393 WARN L141 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size [2021-02-21 21:29:30,438 WARN L147 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size 108 [2021-02-21 21:29:32,573 WARN L141 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size [2021-02-21 21:29:32,584 WARN L147 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size 101 [2021-02-21 21:29:32,585 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:29:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:32,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:32,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:29:32,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:29:32,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 21:29:32,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 21:29:32,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:32,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 21:29:32,983 WARN L141 QuantifierPusher]: treesize reduction 21, result has 80.7 percent of original size [2021-02-21 21:29:32,991 WARN L147 QuantifierPusher]: treesize reduction 21, result has 80.7 percent of original size 88 [2021-02-21 21:29:33,078 WARN L141 QuantifierPusher]: treesize reduction 47, result has 53.0 percent of original size [2021-02-21 21:29:33,081 WARN L147 QuantifierPusher]: treesize reduction 47, result has 53.0 percent of original size 53 [2021-02-21 21:29:33,124 WARN L141 QuantifierPusher]: treesize reduction 40, result has 23.1 percent of original size [2021-02-21 21:29:33,125 WARN L147 QuantifierPusher]: treesize reduction 40, result has 23.1 percent of original size 12 [2021-02-21 21:29:33,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:33,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:33,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:33,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:33,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:33,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-02-21 21:29:33,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-02-21 21:29:33,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:33,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-02-21 21:29:33,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-02-21 21:29:33,683 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 66 [2021-02-21 21:29:33,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 21:29:33,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:29:33,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 21:29:33,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 21:29:33,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:33,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-21 21:29:34,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:34,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 21:29:34,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:34,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-21 21:29:34,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:34,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-21 21:29:34,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:34,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:34,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187527662] [2021-02-21 21:29:34,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:34,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-21 21:29:34,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409121486] [2021-02-21 21:29:34,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-21 21:29:34,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:34,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-21 21:29:34,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2021-02-21 21:29:34,316 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 19 states. [2021-02-21 21:29:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:36,090 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-02-21 21:29:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 21:29:36,091 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2021-02-21 21:29:36,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:36,094 INFO L225 Difference]: With dead ends: 55 [2021-02-21 21:29:36,094 INFO L226 Difference]: Without dead ends: 49 [2021-02-21 21:29:36,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2021-02-21 21:29:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-02-21 21:29:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2021-02-21 21:29:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-02-21 21:29:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-02-21 21:29:36,113 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 38 [2021-02-21 21:29:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:36,114 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-02-21 21:29:36,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-21 21:29:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-02-21 21:29:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-21 21:29:36,116 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:36,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:36,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:29:36,117 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash 984603401, now seen corresponding path program 2 times [2021-02-21 21:29:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:36,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584537388] [2021-02-21 21:29:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:38,278 WARN L141 QuantifierPusher]: treesize reduction 85, result has 55.5 percent of original size [2021-02-21 21:29:38,289 WARN L147 QuantifierPusher]: treesize reduction 85, result has 55.5 percent of original size 106 [2021-02-21 21:29:40,441 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-02-21 21:29:40,448 WARN L141 QuantifierPusher]: treesize reduction 74, result has 62.8 percent of original size [2021-02-21 21:29:40,457 WARN L147 QuantifierPusher]: treesize reduction 74, result has 62.8 percent of original size 125 [2021-02-21 21:29:40,459 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:29:42,532 WARN L141 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size [2021-02-21 21:29:42,541 WARN L147 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size 108 [2021-02-21 21:29:44,617 WARN L141 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size [2021-02-21 21:29:44,626 WARN L147 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size 101 [2021-02-21 21:29:44,627 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:29:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:44,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:44,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:44,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:44,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:29:44,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:44,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:29:44,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:44,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 21:29:44,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:44,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:29:44,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:44,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:29:44,893 WARN L141 QuantifierPusher]: treesize reduction 21, result has 81.4 percent of original size [2021-02-21 21:29:44,896 WARN L147 QuantifierPusher]: treesize reduction 21, result has 81.4 percent of original size 92 [2021-02-21 21:29:44,998 WARN L141 QuantifierPusher]: treesize reduction 21, result has 79.0 percent of original size [2021-02-21 21:29:45,000 WARN L147 QuantifierPusher]: treesize reduction 21, result has 79.0 percent of original size 79 [2021-02-21 21:29:45,075 WARN L141 QuantifierPusher]: treesize reduction 40, result has 23.1 percent of original size [2021-02-21 21:29:45,076 WARN L147 QuantifierPusher]: treesize reduction 40, result has 23.1 percent of original size 12 [2021-02-21 21:29:45,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:45,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:45,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:45,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:45,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:45,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:45,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:29:45,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-02-21 21:29:45,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:45,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 223 [2021-02-21 21:29:45,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-02-21 21:29:45,392 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 65 [2021-02-21 21:29:45,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 21:29:45,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-21 21:29:45,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 21:29:45,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-21 21:29:45,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 21:29:45,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 21:29:45,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-21 21:29:45,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-21 21:29:45,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:45,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 21:29:46,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:46,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-21 21:29:46,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:46,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-21 21:29:46,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:46,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-21 21:29:46,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:46,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-21 21:29:46,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:46,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-21 21:29:46,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:46,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-21 21:29:46,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:46,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-21 21:29:46,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:46,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:46,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584537388] [2021-02-21 21:29:46,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:46,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-02-21 21:29:46,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706650248] [2021-02-21 21:29:46,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-21 21:29:46,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:46,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-21 21:29:46,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2021-02-21 21:29:46,578 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 27 states. [2021-02-21 21:29:47,290 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-02-21 21:29:47,482 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-02-21 21:29:49,322 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-02-21 21:29:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:49,771 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2021-02-21 21:29:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-21 21:29:49,772 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 46 [2021-02-21 21:29:49,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:49,774 INFO L225 Difference]: With dead ends: 63 [2021-02-21 21:29:49,774 INFO L226 Difference]: Without dead ends: 57 [2021-02-21 21:29:49,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=279, Invalid=2373, Unknown=0, NotChecked=0, Total=2652 [2021-02-21 21:29:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-21 21:29:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2021-02-21 21:29:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-21 21:29:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2021-02-21 21:29:49,795 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 46 [2021-02-21 21:29:49,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:49,796 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2021-02-21 21:29:49,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-21 21:29:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2021-02-21 21:29:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-21 21:29:49,798 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:49,798 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:49,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:29:49,799 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:49,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:49,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1404617613, now seen corresponding path program 3 times [2021-02-21 21:29:49,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:49,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395796517] [2021-02-21 21:29:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:51,957 WARN L141 QuantifierPusher]: treesize reduction 85, result has 55.5 percent of original size [2021-02-21 21:29:51,966 WARN L147 QuantifierPusher]: treesize reduction 85, result has 55.5 percent of original size 106 [2021-02-21 21:29:54,112 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-02-21 21:29:54,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:54,123 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-21 21:29:54,129 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:54,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:54,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:54,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-02-21 21:29:54,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-02-21 21:29:54,152 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:29:56,227 WARN L141 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size [2021-02-21 21:29:56,236 WARN L147 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size 101 [2021-02-21 21:29:58,331 WARN L141 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size [2021-02-21 21:29:58,339 WARN L147 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size 108 [2021-02-21 21:29:58,341 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:29:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:58,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:58,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:29:58,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:29:58,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:29:58,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-21 21:29:58,604 WARN L141 QuantifierPusher]: treesize reduction 51, result has 55.7 percent of original size [2021-02-21 21:29:58,607 WARN L147 QuantifierPusher]: treesize reduction 51, result has 55.7 percent of original size 64 [2021-02-21 21:29:58,702 WARN L141 QuantifierPusher]: treesize reduction 41, result has 38.8 percent of original size [2021-02-21 21:29:58,703 WARN L147 QuantifierPusher]: treesize reduction 41, result has 38.8 percent of original size 26 [2021-02-21 21:29:58,740 WARN L141 QuantifierPusher]: treesize reduction 40, result has 23.1 percent of original size [2021-02-21 21:29:58,741 WARN L147 QuantifierPusher]: treesize reduction 40, result has 23.1 percent of original size 12 [2021-02-21 21:29:58,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:58,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:58,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:58,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:58,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:58,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-21 21:29:58,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-02-21 21:29:58,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:29:58,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:58,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-02-21 21:29:58,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-02-21 21:30:01,170 WARN L202 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 127 [2021-02-21 21:30:05,714 WARN L202 SmtUtils]: Spent 4.34 s on a formula simplification that was a NOOP. DAG size: 127 [2021-02-21 21:30:05,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:05,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-02-21 21:30:05,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:05,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:05,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-21 21:30:05,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 421 [2021-02-21 21:30:06,401 WARN L202 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 66 [2021-02-21 21:30:06,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:06,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:06,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:06,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-21 21:30:06,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-21 21:30:06,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:06,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:06,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:06,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-21 21:30:06,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 21:30:06,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:06,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:07,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:07,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-02-21 21:30:07,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-02-21 21:30:07,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:07,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:07,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:07,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-21 21:30:07,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-02-21 21:30:07,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:07,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:07,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:07,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-21 21:30:07,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-02-21 21:30:07,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:07,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:07,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:07,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-21 21:30:07,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-02-21 21:30:10,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:10,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:10,038 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size [2021-02-21 21:30:10,040 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 183 [2021-02-21 21:30:10,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-02-21 21:30:15,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:15,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:15,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:15,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-21 21:30:15,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-02-21 21:30:16,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:16,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:16,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:16,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-21 21:30:16,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-02-21 21:30:18,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:18,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:18,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:18,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-21 21:30:18,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-02-21 21:30:21,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:21,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:21,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:21,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-21 21:30:21,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-02-21 21:30:24,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:24,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:24,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:24,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-21 21:30:24,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-02-21 21:30:29,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:29,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:29,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:29,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-21 21:30:29,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 202 [2021-02-21 21:30:33,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:33,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:33,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:33,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-21 21:30:33,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-02-21 21:30:43,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:43,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:43,974 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size [2021-02-21 21:30:43,977 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 183 [2021-02-21 21:30:43,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-02-21 21:30:51,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:51,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:51,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:51,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-21 21:30:51,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-02-21 21:30:51,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:51,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:51,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:51,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-21 21:30:51,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-02-21 21:30:52,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:53,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:53,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:53,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-21 21:30:53,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-02-21 21:30:56,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:56,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:30:56,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:30:56,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-21 21:30:56,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-02-21 21:31:00,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:31:00,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:31:00,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:31:00,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-21 21:31:00,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-02-21 21:31:05,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:31:05,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:31:05,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:31:05,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-21 21:31:05,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-02-21 21:31:06,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:31:06,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:31:06,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:31:06,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-21 21:31:06,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 214 [2021-02-21 21:31:08,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:31:09,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:31:09,004 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size [2021-02-21 21:31:09,006 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 183 [2021-02-21 21:31:09,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-02-21 21:31:19,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:31:19,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:31:19,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395796517] [2021-02-21 21:31:19,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:31:19,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-02-21 21:31:19,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758434698] [2021-02-21 21:31:19,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-02-21 21:31:19,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:31:19,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-02-21 21:31:19,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1187, Unknown=23, NotChecked=0, Total=1332 [2021-02-21 21:31:19,315 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 34 states. [2021-02-21 21:31:21,387 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-02-21 21:31:21,790 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-02-21 21:31:25,270 WARN L202 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 157 DAG size of output: 93 [2021-02-21 21:31:26,196 WARN L202 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2021-02-21 21:31:27,114 WARN L202 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2021-02-21 21:31:29,806 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-21 21:31:32,473 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-21 21:31:37,185 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-21 21:31:37,828 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-21 21:31:48,663 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:31:59,848 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-21 21:32:10,805 WARN L202 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-21 21:32:34,779 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 21:32:48,671 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-21 21:32:56,005 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:33:09,495 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 21:33:19,642 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:33:54,619 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-21 21:34:06,634 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 21:34:13,793 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:34:15,248 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-21 21:34:22,145 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-21 21:34:23,082 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-21 21:34:34,727 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-21 21:34:39,351 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-21 21:34:55,994 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-21 21:35:16,813 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-21 21:36:14,357 WARN L202 SmtUtils]: Spent 24.54 s on a formula simplification. DAG size of input: 282 DAG size of output: 203 [2021-02-21 21:37:14,853 WARN L202 SmtUtils]: Spent 18.05 s on a formula simplification. DAG size of input: 277 DAG size of output: 238 [2021-02-21 21:37:15,897 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-02-21 21:37:18,095 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-02-21 21:37:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:37:19,021 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-02-21 21:37:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-21 21:37:19,042 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 54 [2021-02-21 21:37:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:37:19,043 INFO L225 Difference]: With dead ends: 71 [2021-02-21 21:37:19,044 INFO L226 Difference]: Without dead ends: 65 [2021-02-21 21:37:19,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 300.3s TimeCoverageRelationStatistics Valid=347, Invalid=4115, Unknown=94, NotChecked=0, Total=4556 [2021-02-21 21:37:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-21 21:37:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-02-21 21:37:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-21 21:37:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2021-02-21 21:37:19,074 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 54 [2021-02-21 21:37:19,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:37:19,074 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2021-02-21 21:37:19,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-02-21 21:37:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2021-02-21 21:37:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 21:37:19,077 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:37:19,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:37:19,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:37:19,077 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:37:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:37:19,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1554180113, now seen corresponding path program 4 times [2021-02-21 21:37:19,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:37:19,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866500001] [2021-02-21 21:37:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:37:21,960 WARN L202 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-02-21 21:37:21,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:21,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-02-21 21:37:24,756 WARN L202 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-02-21 21:37:24,768 WARN L141 QuantifierPusher]: treesize reduction 14, result has 88.3 percent of original size [2021-02-21 21:37:24,781 WARN L147 QuantifierPusher]: treesize reduction 14, result has 88.3 percent of original size 106 [2021-02-21 21:37:24,782 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:37:27,128 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-21 21:37:27,140 WARN L141 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size [2021-02-21 21:37:27,150 WARN L147 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size 108 [2021-02-21 21:37:29,507 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-21 21:37:29,517 WARN L141 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size [2021-02-21 21:37:29,526 WARN L147 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size 101 [2021-02-21 21:37:29,527 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:37:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:37:29,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:29,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:37:29,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:29,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:37:29,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:29,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:37:29,923 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2021-02-21 21:37:29,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:29,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 21:37:30,158 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2021-02-21 21:37:30,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:30,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:37:30,488 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2021-02-21 21:37:30,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:30,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 21:37:30,603 WARN L141 QuantifierPusher]: treesize reduction 160, result has 14.9 percent of original size [2021-02-21 21:37:30,611 WARN L147 QuantifierPusher]: treesize reduction 160, result has 14.9 percent of original size 28 [2021-02-21 21:37:30,986 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-02-21 21:37:31,001 WARN L141 QuantifierPusher]: treesize reduction 152, result has 14.6 percent of original size [2021-02-21 21:37:31,008 WARN L147 QuantifierPusher]: treesize reduction 152, result has 14.6 percent of original size 26 [2021-02-21 21:37:31,340 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-02-21 21:37:31,354 WARN L141 QuantifierPusher]: treesize reduction 115, result has 9.4 percent of original size [2021-02-21 21:37:31,361 WARN L147 QuantifierPusher]: treesize reduction 115, result has 9.4 percent of original size 12 [2021-02-21 21:37:31,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:31,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:37:31,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:31,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:37:31,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:31,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:37:32,399 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-21 21:37:32,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:37:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:37:32,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:32,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:37:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:37:32,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:32,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:37:32,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:32,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:37:32,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-02-21 21:37:32,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:32,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:37:32,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:32,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 202 [2021-02-21 21:37:32,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-02-21 21:37:34,824 WARN L202 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 123 [2021-02-21 21:37:35,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:35,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 21:37:35,477 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-02-21 21:37:35,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:35,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-21 21:37:35,991 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-02-21 21:37:36,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:36,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 21:37:36,542 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-02-21 21:37:36,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:36,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-21 21:37:37,068 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-02-21 21:37:37,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:37,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 21:37:37,637 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-02-21 21:37:37,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:37,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 21:37:38,285 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-02-21 21:37:38,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:38,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-21 21:37:38,958 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-02-21 21:37:38,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:38,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-21 21:37:39,578 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-02-21 21:37:39,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:39,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 21:37:40,206 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-02-21 21:37:40,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:40,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-21 21:37:40,867 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-02-21 21:37:40,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:40,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-21 21:37:41,521 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-02-21 21:37:41,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:41,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-21 21:37:42,237 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-02-21 21:37:42,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:42,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-21 21:37:42,966 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-02-21 21:37:42,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:42,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-21 21:37:43,743 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-21 21:37:43,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:43,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-21 21:37:44,614 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-02-21 21:37:44,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:44,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-21 21:37:45,402 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-02-21 21:37:45,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:45,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-21 21:37:46,257 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-21 21:37:46,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:46,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-21 21:37:47,151 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-02-21 21:37:47,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:47,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-21 21:37:48,033 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-02-21 21:37:48,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:48,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-02-21 21:37:48,879 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-02-21 21:37:48,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:48,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-21 21:37:49,749 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-02-21 21:37:49,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:49,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-21 21:37:50,688 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-02-21 21:37:50,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:50,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-21 21:37:51,818 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-02-21 21:37:51,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:51,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-21 21:37:52,861 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-02-21 21:37:52,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:52,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-02-21 21:37:53,933 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-02-21 21:37:53,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:53,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-21 21:37:55,081 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-21 21:37:55,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:55,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-02-21 21:37:56,166 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-02-21 21:37:56,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:56,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-21 21:37:57,252 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-21 21:37:57,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:57,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-21 21:37:58,415 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-21 21:37:58,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:58,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-21 21:37:59,616 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-02-21 21:37:59,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:59,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-21 21:38:00,907 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-21 21:38:00,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:38:00,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-21 21:38:02,152 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-21 21:38:02,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:38:02,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:38:02,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866500001] [2021-02-21 21:38:02,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:38:02,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-02-21 21:38:02,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280351800] [2021-02-21 21:38:02,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-02-21 21:38:02,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:38:02,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-02-21 21:38:02,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1758, Unknown=0, NotChecked=0, Total=1892 [2021-02-21 21:38:02,173 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 43 states. [2021-02-21 21:38:06,142 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-02-21 21:38:07,422 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-21 21:38:08,905 WARN L202 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-02-21 21:38:10,310 WARN L202 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-02-21 21:38:11,395 WARN L202 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-02-21 21:38:12,539 WARN L202 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-02-21 21:38:13,463 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-21 21:38:14,341 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-21 21:38:15,237 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-21 21:38:16,138 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-02-21 21:38:17,134 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-02-21 21:38:18,256 WARN L202 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-21 21:38:19,302 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-02-21 21:38:20,294 WARN L202 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-21 21:38:21,514 WARN L202 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-21 21:38:22,725 WARN L202 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-02-21 21:38:24,035 WARN L202 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-21 21:38:25,210 WARN L202 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-21 21:38:26,601 WARN L202 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-21 21:38:27,896 WARN L202 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-21 21:38:29,328 WARN L202 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-21 21:38:30,768 WARN L202 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-02-21 21:38:32,071 WARN L202 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-21 21:38:33,304 WARN L202 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-02-21 21:38:34,576 WARN L202 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-02-21 21:38:35,861 WARN L202 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-21 21:38:37,445 WARN L202 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-21 21:38:38,823 WARN L202 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-02-21 21:38:40,276 WARN L202 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-21 21:38:41,721 WARN L202 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-02-21 21:38:43,041 WARN L202 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-21 21:38:44,362 WARN L202 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-02-21 21:38:45,751 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-02-21 21:38:47,105 WARN L202 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-21 21:38:48,657 WARN L202 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-02-21 21:38:50,152 WARN L202 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-02-21 21:38:52,630 WARN L202 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2021-02-21 21:38:54,429 WARN L202 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-21 21:38:55,336 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-02-21 21:38:56,829 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-02-21 21:38:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:38:57,818 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-02-21 21:38:57,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-21 21:38:57,840 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 62 [2021-02-21 21:38:57,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:38:57,841 INFO L225 Difference]: With dead ends: 79 [2021-02-21 21:38:57,842 INFO L226 Difference]: Without dead ends: 73 [2021-02-21 21:38:57,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2026 ImplicationChecksByTransitivity, 66.6s TimeCoverageRelationStatistics Valid=459, Invalid=6513, Unknown=0, NotChecked=0, Total=6972 [2021-02-21 21:38:57,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-21 21:38:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-02-21 21:38:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-21 21:38:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-02-21 21:38:57,874 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 62 [2021-02-21 21:38:57,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:38:57,874 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-02-21 21:38:57,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-02-21 21:38:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-02-21 21:38:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-21 21:38:57,876 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:38:57,876 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:38:57,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:38:57,877 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:38:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:38:57,878 INFO L82 PathProgramCache]: Analyzing trace with hash -294500203, now seen corresponding path program 5 times [2021-02-21 21:38:57,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:38:57,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129138374] [2021-02-21 21:38:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:39:00,761 WARN L202 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-02-21 21:39:00,774 WARN L141 QuantifierPusher]: treesize reduction 74, result has 62.8 percent of original size [2021-02-21 21:39:00,786 WARN L147 QuantifierPusher]: treesize reduction 74, result has 62.8 percent of original size 125 [2021-02-21 21:39:03,610 WARN L202 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-02-21 21:39:03,624 WARN L141 QuantifierPusher]: treesize reduction 14, result has 88.3 percent of original size [2021-02-21 21:39:03,634 WARN L147 QuantifierPusher]: treesize reduction 14, result has 88.3 percent of original size 106 [2021-02-21 21:39:03,635 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:39:06,015 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-21 21:39:06,029 WARN L141 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size [2021-02-21 21:39:06,040 WARN L147 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size 108 [2021-02-21 21:39:08,426 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-21 21:39:08,440 WARN L141 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size [2021-02-21 21:39:08,447 WARN L147 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size 101 [2021-02-21 21:39:08,448 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:39:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:08,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:08,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:08,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:08,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:39:08,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:08,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:39:08,812 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-02-21 21:39:08,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:08,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:39:09,007 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-02-21 21:39:09,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:09,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 21:39:09,245 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-02-21 21:39:09,258 WARN L141 QuantifierPusher]: treesize reduction 48, result has 33.3 percent of original size [2021-02-21 21:39:09,265 WARN L147 QuantifierPusher]: treesize reduction 48, result has 33.3 percent of original size 24 [2021-02-21 21:39:09,559 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-02-21 21:39:09,577 WARN L141 QuantifierPusher]: treesize reduction 21, result has 82.1 percent of original size [2021-02-21 21:39:09,585 WARN L147 QuantifierPusher]: treesize reduction 21, result has 82.1 percent of original size 96 [2021-02-21 21:39:10,811 WARN L202 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2021-02-21 21:39:10,825 WARN L141 QuantifierPusher]: treesize reduction 21, result has 79.2 percent of original size [2021-02-21 21:39:10,832 WARN L147 QuantifierPusher]: treesize reduction 21, result has 79.2 percent of original size 80 [2021-02-21 21:39:11,626 WARN L202 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 16 [2021-02-21 21:39:11,640 WARN L141 QuantifierPusher]: treesize reduction 46, result has 43.9 percent of original size [2021-02-21 21:39:11,647 WARN L147 QuantifierPusher]: treesize reduction 46, result has 43.9 percent of original size 36 [2021-02-21 21:39:12,134 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 9 [2021-02-21 21:39:12,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:12,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:39:12,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:12,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:39:12,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:12,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:13,045 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-21 21:39:13,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:39:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:39:13,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:13,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:13,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:39:13,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:13,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:39:13,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:13,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-21 21:39:13,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-02-21 21:39:13,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:13,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:39:13,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:13,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-02-21 21:39:13,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-02-21 21:39:13,349 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 65 [2021-02-21 21:39:13,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:13,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-21 21:39:13,983 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-02-21 21:39:13,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:14,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 21:39:14,490 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-02-21 21:39:14,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:14,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 21:39:15,020 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-02-21 21:39:15,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:15,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:39:15,513 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-02-21 21:39:15,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:15,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 21:39:16,065 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-02-21 21:39:16,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:16,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 21:39:16,648 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-02-21 21:39:16,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:16,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-21 21:39:17,261 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-02-21 21:39:17,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:17,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 21:39:17,826 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-02-21 21:39:17,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:17,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 21:39:18,439 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-02-21 21:39:18,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:18,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-21 21:39:19,118 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-02-21 21:39:19,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-21 21:39:19,790 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-02-21 21:39:19,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:19,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-21 21:39:20,482 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-02-21 21:39:20,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:20,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-21 21:39:21,137 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-02-21 21:39:21,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:21,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-21 21:39:21,858 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-02-21 21:39:21,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:21,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-21 21:39:22,666 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-02-21 21:39:22,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:22,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-21 21:39:23,382 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-02-21 21:39:23,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:23,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-21 21:39:24,132 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-02-21 21:39:24,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:24,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-21 21:39:24,963 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-21 21:39:24,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:24,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-21 21:39:25,788 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-02-21 21:39:25,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:25,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-21 21:39:26,566 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-21 21:39:26,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:26,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-02-21 21:39:27,346 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-21 21:39:27,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:27,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-21 21:39:28,204 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-02-21 21:39:28,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:28,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-21 21:39:29,228 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-02-21 21:39:29,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:29,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-02-21 21:39:30,132 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-21 21:39:30,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:30,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-21 21:39:31,085 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-02-21 21:39:31,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:31,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-21 21:39:32,079 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-02-21 21:39:32,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:32,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-21 21:39:33,049 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-02-21 21:39:33,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:33,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-21 21:39:34,001 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-02-21 21:39:34,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:34,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-21 21:39:34,975 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-02-21 21:39:34,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:34,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-21 21:39:36,015 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-21 21:39:36,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:36,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-21 21:39:37,237 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-02-21 21:39:37,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:37,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-21 21:39:38,338 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-02-21 21:39:38,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:38,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-21 21:39:39,473 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-21 21:39:39,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:39,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-21 21:39:40,678 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-02-21 21:39:40,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:40,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-02-21 21:39:41,775 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-21 21:39:41,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:41,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-21 21:39:42,975 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-02-21 21:39:42,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:42,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-02-21 21:39:44,199 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-02-21 21:39:44,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:44,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-21 21:39:45,488 WARN L202 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-02-21 21:39:45,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:45,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-21 21:39:47,121 WARN L202 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-02-21 21:39:47,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:47,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-02-21 21:39:48,594 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-02-21 21:39:48,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:39:48,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:39:48,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129138374] [2021-02-21 21:39:48,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:39:48,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-02-21 21:39:48,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610916148] [2021-02-21 21:39:48,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-02-21 21:39:48,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:39:48,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-02-21 21:39:48,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2589, Unknown=0, NotChecked=0, Total=2756 [2021-02-21 21:39:48,618 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 51 states. [2021-02-21 21:39:53,647 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-02-21 21:39:55,287 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-21 21:39:56,560 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-02-21 21:39:57,810 WARN L202 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-02-21 21:39:59,073 WARN L202 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-21 21:40:00,349 WARN L202 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-21 21:40:01,494 WARN L202 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-21 21:40:02,591 WARN L202 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-21 21:40:03,694 WARN L202 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-21 21:40:04,773 WARN L202 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-21 21:40:06,082 WARN L202 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-21 21:40:07,305 WARN L202 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-21 21:40:08,561 WARN L202 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-21 21:40:09,825 WARN L202 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-02-21 21:40:11,061 WARN L202 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-02-21 21:40:12,304 WARN L202 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-02-21 21:40:13,561 WARN L202 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-02-21 21:40:14,772 WARN L202 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-21 21:40:16,345 WARN L202 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-21 21:40:17,779 WARN L202 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-02-21 21:40:19,280 WARN L202 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-21 21:40:20,798 WARN L202 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-21 21:40:22,089 WARN L202 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-21 21:40:23,319 WARN L202 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-21 21:40:24,565 WARN L202 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-21 21:40:25,754 WARN L202 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-02-21 21:40:27,257 WARN L202 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-21 21:40:28,608 WARN L202 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-02-21 21:40:30,025 WARN L202 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-02-21 21:40:31,449 WARN L202 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-21 21:40:32,829 WARN L202 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-21 21:40:34,150 WARN L202 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-21 21:40:35,520 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-21 21:40:36,856 WARN L202 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-02-21 21:40:38,434 WARN L202 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-21 21:40:39,884 WARN L202 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-21 21:40:41,411 WARN L202 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-02-21 21:40:42,975 WARN L202 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-21 21:40:44,488 WARN L202 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-02-21 21:40:45,979 WARN L202 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-21 21:40:47,352 WARN L202 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-21 21:40:48,706 WARN L202 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-21 21:40:50,280 WARN L202 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-02-21 21:40:51,740 WARN L202 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-21 21:40:54,561 WARN L202 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-02-21 21:40:56,440 WARN L202 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-02-21 21:40:57,432 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-02-21 21:40:58,892 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-02-21 21:41:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:41:00,006 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2021-02-21 21:41:00,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-02-21 21:41:00,030 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 70 [2021-02-21 21:41:00,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:41:00,031 INFO L225 Difference]: With dead ends: 87 [2021-02-21 21:41:00,032 INFO L226 Difference]: Without dead ends: 81 [2021-02-21 21:41:00,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3063 ImplicationChecksByTransitivity, 85.6s TimeCoverageRelationStatistics Valid=559, Invalid=9541, Unknown=0, NotChecked=0, Total=10100 [2021-02-21 21:41:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-21 21:41:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-02-21 21:41:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-21 21:41:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2021-02-21 21:41:00,067 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 70 [2021-02-21 21:41:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:41:00,067 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2021-02-21 21:41:00,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2021-02-21 21:41:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2021-02-21 21:41:00,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-21 21:41:00,068 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:41:00,069 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:41:00,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:41:00,069 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:41:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:41:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1579869465, now seen corresponding path program 6 times [2021-02-21 21:41:00,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:41:00,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623300938] [2021-02-21 21:41:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:41:03,050 WARN L202 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-02-21 21:41:03,066 WARN L141 QuantifierPusher]: treesize reduction 74, result has 62.8 percent of original size [2021-02-21 21:41:03,078 WARN L147 QuantifierPusher]: treesize reduction 74, result has 62.8 percent of original size 125 [2021-02-21 21:41:06,011 WARN L202 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-02-21 21:41:06,027 WARN L141 QuantifierPusher]: treesize reduction 14, result has 88.3 percent of original size [2021-02-21 21:41:06,038 WARN L147 QuantifierPusher]: treesize reduction 14, result has 88.3 percent of original size 106 [2021-02-21 21:41:06,039 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:41:08,475 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-21 21:41:08,488 WARN L141 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size [2021-02-21 21:41:08,499 WARN L147 QuantifierPusher]: treesize reduction 47, result has 68.2 percent of original size 101 [2021-02-21 21:41:10,923 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-21 21:41:10,941 WARN L141 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size [2021-02-21 21:41:10,954 WARN L147 QuantifierPusher]: treesize reduction 34, result has 76.1 percent of original size 108 [2021-02-21 21:41:10,955 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:41:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:11,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:11,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:11,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:11,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:11,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:11,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:41:11,495 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2021-02-21 21:41:11,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:11,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 21:41:11,841 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2021-02-21 21:41:11,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:11,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:41:12,272 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2021-02-21 21:41:12,287 WARN L141 QuantifierPusher]: treesize reduction 13, result has 82.7 percent of original size [2021-02-21 21:41:12,300 WARN L147 QuantifierPusher]: treesize reduction 13, result has 82.7 percent of original size 62 [2021-02-21 21:41:13,320 WARN L202 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-02-21 21:41:13,334 WARN L141 QuantifierPusher]: treesize reduction 21, result has 82.1 percent of original size [2021-02-21 21:41:13,341 WARN L147 QuantifierPusher]: treesize reduction 21, result has 82.1 percent of original size 96 [2021-02-21 21:41:15,212 WARN L202 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2021-02-21 21:41:15,226 WARN L141 QuantifierPusher]: treesize reduction 47, result has 53.0 percent of original size [2021-02-21 21:41:15,232 WARN L147 QuantifierPusher]: treesize reduction 47, result has 53.0 percent of original size 53 [2021-02-21 21:41:16,039 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2021-02-21 21:41:16,052 WARN L141 QuantifierPusher]: treesize reduction 40, result has 23.1 percent of original size [2021-02-21 21:41:16,059 WARN L147 QuantifierPusher]: treesize reduction 40, result has 23.1 percent of original size 12 [2021-02-21 21:41:16,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:16,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:41:16,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:16,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:41:16,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:16,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:17,378 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-21 21:41:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:41:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:17,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:17,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:41:17,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:17,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:17,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:17,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-21 21:41:17,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-02-21 21:41:17,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:17,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:17,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:17,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-02-21 21:41:17,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 236 [2021-02-21 21:41:18,045 WARN L202 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 64 [2021-02-21 21:41:19,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:19,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:19,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:19,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-21 21:41:19,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-21 21:41:19,856 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-02-21 21:41:19,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:19,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:19,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:19,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-21 21:41:19,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-02-21 21:41:20,588 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-02-21 21:41:20,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:20,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:20,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:20,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-21 21:41:20,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-02-21 21:41:21,349 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-21 21:41:21,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:21,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:21,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:21,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-21 21:41:21,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-02-21 21:41:24,340 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-02-21 21:41:24,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:24,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:24,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:24,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:41:24,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-02-21 21:41:30,021 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-02-21 21:41:30,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:30,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:30,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:30,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:41:30,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-02-21 21:41:33,025 WARN L202 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-02-21 21:41:33,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:33,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:33,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:33,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:41:33,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-02-21 21:41:38,633 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-02-21 21:41:38,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:38,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:38,660 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size [2021-02-21 21:41:38,669 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 188 [2021-02-21 21:41:38,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 202 [2021-02-21 21:41:44,872 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-02-21 21:41:44,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:44,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:44,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:44,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:41:44,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-02-21 21:41:51,635 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-02-21 21:41:51,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:51,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:51,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:51,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:41:51,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-02-21 21:41:54,521 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-02-21 21:41:54,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:54,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:54,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:54,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:41:54,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 21:41:58,564 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-02-21 21:41:58,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:58,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:41:58,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:58,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 21:41:58,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-02-21 21:42:11,572 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-02-21 21:42:11,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:11,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:42:11,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:11,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 21:42:11,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-02-21 21:42:23,393 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-02-21 21:42:23,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:42:23,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 21:42:23,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-02-21 21:42:27,294 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-02-21 21:42:27,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:27,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:42:27,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:27,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 21:42:27,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2021-02-21 21:42:37,683 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-02-21 21:42:37,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:37,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:42:37,711 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size [2021-02-21 21:42:37,720 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.9 percent of original size 188 [2021-02-21 21:42:37,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-02-21 21:42:54,845 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-02-21 21:42:54,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:54,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:42:54,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:54,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:42:54,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-02-21 21:43:01,969 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-02-21 21:43:01,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:01,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:43:01,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:02,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:43:02,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 21:43:14,088 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-02-21 21:43:14,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:14,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:43:14,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:14,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 21:43:14,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-02-21 21:43:19,574 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-02-21 21:43:19,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:43:19,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 21:43:19,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-02-21 21:43:33,159 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-02-21 21:43:33,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:33,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:43:33,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:33,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 21:43:33,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-02-21 21:43:44,772 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-02-21 21:43:44,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:44,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:43:44,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:44,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 21:43:44,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213