/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:05:28,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:05:28,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:05:28,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:05:28,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:05:28,501 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:05:28,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:05:28,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:05:28,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:05:28,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:05:28,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:05:28,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:05:28,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:05:28,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:05:28,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:05:28,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:05:28,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:05:28,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:05:28,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:05:28,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:05:28,511 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:05:28,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:05:28,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:05:28,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:05:28,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:05:28,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:05:28,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:05:28,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:05:28,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:05:29,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:05:29,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:05:29,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:05:29,044 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:05:29,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-2.c [2021-02-23 23:05:29,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0e2b503/3c97d5fe67c54efc94c5140e9939e3c1/FLAGd4f27ec26 [2021-02-23 23:05:29,848 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:05:29,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-2.c [2021-02-23 23:05:29,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0e2b503/3c97d5fe67c54efc94c5140e9939e3c1/FLAGd4f27ec26 [2021-02-23 23:05:30,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0e2b503/3c97d5fe67c54efc94c5140e9939e3c1 [2021-02-23 23:05:30,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:05:30,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:05:30,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:30,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:05:30,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:05:30,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:30" (1/1) ... [2021-02-23 23:05:30,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c0546b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30, skipping insertion in model container [2021-02-23 23:05:30,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:30" (1/1) ... [2021-02-23 23:05:30,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:05:30,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:05:30,499 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-2.c[807,820] [2021-02-23 23:05:30,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:30,517 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:05:30,555 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-2.c[807,820] [2021-02-23 23:05:30,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:30,589 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:05:30,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30 WrapperNode [2021-02-23 23:05:30,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:30,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:05:30,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:05:30,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:05:30,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30" (1/1) ... [2021-02-23 23:05:30,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30" (1/1) ... [2021-02-23 23:05:30,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30" (1/1) ... [2021-02-23 23:05:30,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30" (1/1) ... [2021-02-23 23:05:30,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30" (1/1) ... [2021-02-23 23:05:30,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30" (1/1) ... [2021-02-23 23:05:30,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30" (1/1) ... [2021-02-23 23:05:30,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:05:30,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:05:30,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:05:30,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:05:30,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:05:30,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:05:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:05:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:05:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-02-23 23:05:30,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:05:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:05:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:05:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:05:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:05:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:05:30,787 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 23:05:30,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:05:30,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:05:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:05:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:05:30,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:05:30,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:05:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:05:31,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:05:31,418 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 23:05:31,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:31 BoogieIcfgContainer [2021-02-23 23:05:31,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:05:31,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:05:31,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:05:31,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:05:31,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:05:30" (1/3) ... [2021-02-23 23:05:31,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beb9723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:31, skipping insertion in model container [2021-02-23 23:05:31,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:30" (2/3) ... [2021-02-23 23:05:31,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beb9723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:31, skipping insertion in model container [2021-02-23 23:05:31,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:31" (3/3) ... [2021-02-23 23:05:31,458 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-2.c [2021-02-23 23:05:31,469 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:05:31,474 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:05:31,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:05:31,519 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:05:31,519 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:05:31,519 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:05:31,519 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:05:31,520 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:05:31,520 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:05:31,520 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:05:31,520 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:05:31,537 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2021-02-23 23:05:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 23:05:31,549 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:31,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:31,550 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:31,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1271161021, now seen corresponding path program 1 times [2021-02-23 23:05:31,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:31,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708189784] [2021-02-23 23:05:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:31,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:31,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:31,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:31,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:31,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:31,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:31,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:31,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 23:05:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:31,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:31,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:31,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708189784] [2021-02-23 23:05:31,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:31,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 23:05:31,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452912632] [2021-02-23 23:05:31,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 23:05:31,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:31,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 23:05:31,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:05:31,947 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2021-02-23 23:05:32,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:32,224 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2021-02-23 23:05:32,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 23:05:32,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-23 23:05:32,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:32,236 INFO L225 Difference]: With dead ends: 108 [2021-02-23 23:05:32,236 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 23:05:32,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:05:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 23:05:32,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-23 23:05:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-23 23:05:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-02-23 23:05:32,293 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 42 [2021-02-23 23:05:32,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:32,294 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-02-23 23:05:32,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 23:05:32,294 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-02-23 23:05:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 23:05:32,296 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:32,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:32,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:05:32,297 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:32,298 INFO L82 PathProgramCache]: Analyzing trace with hash -645916160, now seen corresponding path program 1 times [2021-02-23 23:05:32,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:32,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962640489] [2021-02-23 23:05:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:32,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:32,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:32,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:32,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:32,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 23:05:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:32,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:32,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962640489] [2021-02-23 23:05:32,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:32,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:05:32,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547141922] [2021-02-23 23:05:32,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:05:32,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:05:32,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:05:32,460 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 4 states. [2021-02-23 23:05:32,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:32,612 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2021-02-23 23:05:32,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:05:32,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2021-02-23 23:05:32,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:32,615 INFO L225 Difference]: With dead ends: 97 [2021-02-23 23:05:32,615 INFO L226 Difference]: Without dead ends: 67 [2021-02-23 23:05:32,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:05:32,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-02-23 23:05:32,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2021-02-23 23:05:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-02-23 23:05:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-02-23 23:05:32,642 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 44 [2021-02-23 23:05:32,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:32,642 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-02-23 23:05:32,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:05:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-02-23 23:05:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-23 23:05:32,647 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:32,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:32,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:05:32,648 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:32,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1721582074, now seen corresponding path program 1 times [2021-02-23 23:05:32,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:32,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034659813] [2021-02-23 23:05:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:32,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:32,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:32,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:32,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:32,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:32,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:32,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-23 23:05:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:32,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:32,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:32,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034659813] [2021-02-23 23:05:32,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:32,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-23 23:05:32,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233273424] [2021-02-23 23:05:32,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:05:32,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:32,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:05:32,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:05:32,888 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 6 states. [2021-02-23 23:05:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:33,064 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2021-02-23 23:05:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:05:33,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2021-02-23 23:05:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:33,066 INFO L225 Difference]: With dead ends: 107 [2021-02-23 23:05:33,066 INFO L226 Difference]: Without dead ends: 77 [2021-02-23 23:05:33,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:05:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-23 23:05:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2021-02-23 23:05:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-02-23 23:05:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-02-23 23:05:33,084 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 54 [2021-02-23 23:05:33,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:33,084 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-02-23 23:05:33,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:05:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-02-23 23:05:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-23 23:05:33,087 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:33,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:33,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:05:33,088 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:33,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:33,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1722061452, now seen corresponding path program 2 times [2021-02-23 23:05:33,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:33,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095112021] [2021-02-23 23:05:33,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:33,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:33,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:33,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:33,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 23:05:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:33,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:33,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095112021] [2021-02-23 23:05:33,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:33,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-23 23:05:33,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502659465] [2021-02-23 23:05:33,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:05:33,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:33,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:05:33,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:05:33,289 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 8 states. [2021-02-23 23:05:33,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:33,504 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2021-02-23 23:05:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 23:05:33,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2021-02-23 23:05:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:33,506 INFO L225 Difference]: With dead ends: 117 [2021-02-23 23:05:33,506 INFO L226 Difference]: Without dead ends: 87 [2021-02-23 23:05:33,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:05:33,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-23 23:05:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2021-02-23 23:05:33,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 23:05:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-02-23 23:05:33,521 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 64 [2021-02-23 23:05:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:33,521 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-02-23 23:05:33,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:05:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-02-23 23:05:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-23 23:05:33,524 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:33,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:33,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:05:33,525 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:33,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:33,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1436354670, now seen corresponding path program 3 times [2021-02-23 23:05:33,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:33,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859962301] [2021-02-23 23:05:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:33,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:33,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:33,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:33,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:33,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-23 23:05:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:33,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:33,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:33,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859962301] [2021-02-23 23:05:33,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:33,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 23:05:33,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599039177] [2021-02-23 23:05:33,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 23:05:33,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:33,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 23:05:33,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:05:33,719 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 10 states. [2021-02-23 23:05:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:33,980 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2021-02-23 23:05:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 23:05:33,980 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2021-02-23 23:05:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:33,982 INFO L225 Difference]: With dead ends: 127 [2021-02-23 23:05:33,982 INFO L226 Difference]: Without dead ends: 97 [2021-02-23 23:05:33,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:05:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-02-23 23:05:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2021-02-23 23:05:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-02-23 23:05:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-02-23 23:05:33,996 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 74 [2021-02-23 23:05:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:33,996 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-02-23 23:05:33,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 23:05:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-02-23 23:05:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-23 23:05:33,998 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:33,998 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:33,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:05:33,999 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:33,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1870443240, now seen corresponding path program 4 times [2021-02-23 23:05:33,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:34,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472787085] [2021-02-23 23:05:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:34,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:34,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:34,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:34,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:34,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-02-23 23:05:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:34,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:34,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472787085] [2021-02-23 23:05:34,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:34,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 23:05:34,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425109603] [2021-02-23 23:05:34,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 23:05:34,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:34,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 23:05:34,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:05:34,357 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 12 states. [2021-02-23 23:05:34,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:34,665 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2021-02-23 23:05:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 23:05:34,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2021-02-23 23:05:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:34,667 INFO L225 Difference]: With dead ends: 137 [2021-02-23 23:05:34,667 INFO L226 Difference]: Without dead ends: 107 [2021-02-23 23:05:34,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2021-02-23 23:05:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-23 23:05:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2021-02-23 23:05:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-02-23 23:05:34,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2021-02-23 23:05:34,681 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 84 [2021-02-23 23:05:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:34,681 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2021-02-23 23:05:34,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 23:05:34,682 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2021-02-23 23:05:34,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-02-23 23:05:34,683 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:34,683 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:34,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:05:34,684 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:34,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:34,685 INFO L82 PathProgramCache]: Analyzing trace with hash 766702366, now seen corresponding path program 5 times [2021-02-23 23:05:34,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:34,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435607211] [2021-02-23 23:05:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:34,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:34,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:34,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:34,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:34,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:34,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-23 23:05:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:34,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:34,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:34,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435607211] [2021-02-23 23:05:34,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:34,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-02-23 23:05:34,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300044313] [2021-02-23 23:05:34,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 23:05:34,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:34,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 23:05:34,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-02-23 23:05:34,914 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 14 states. [2021-02-23 23:05:35,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:35,287 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2021-02-23 23:05:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 23:05:35,288 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2021-02-23 23:05:35,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:35,289 INFO L225 Difference]: With dead ends: 147 [2021-02-23 23:05:35,289 INFO L226 Difference]: Without dead ends: 117 [2021-02-23 23:05:35,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2021-02-23 23:05:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-02-23 23:05:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 109. [2021-02-23 23:05:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-02-23 23:05:35,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2021-02-23 23:05:35,311 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 94 [2021-02-23 23:05:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:35,312 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2021-02-23 23:05:35,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 23:05:35,315 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2021-02-23 23:05:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-02-23 23:05:35,318 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:35,319 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:35,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:05:35,319 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:35,320 INFO L82 PathProgramCache]: Analyzing trace with hash 627526052, now seen corresponding path program 6 times [2021-02-23 23:05:35,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:35,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568011711] [2021-02-23 23:05:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:35,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:35,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:35,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:35,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:35,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:35,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 23:05:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:35,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:35,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:35,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568011711] [2021-02-23 23:05:35,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:35,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-23 23:05:35,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776239187] [2021-02-23 23:05:35,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 23:05:35,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:35,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 23:05:35,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:05:35,616 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 16 states. [2021-02-23 23:05:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:35,943 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2021-02-23 23:05:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 23:05:35,944 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2021-02-23 23:05:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:35,946 INFO L225 Difference]: With dead ends: 157 [2021-02-23 23:05:35,946 INFO L226 Difference]: Without dead ends: 127 [2021-02-23 23:05:35,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2021-02-23 23:05:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-02-23 23:05:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2021-02-23 23:05:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-02-23 23:05:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2021-02-23 23:05:35,976 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 104 [2021-02-23 23:05:35,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:35,977 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2021-02-23 23:05:35,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 23:05:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2021-02-23 23:05:35,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-02-23 23:05:35,978 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:35,979 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:35,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:05:35,981 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:35,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:35,982 INFO L82 PathProgramCache]: Analyzing trace with hash -807554902, now seen corresponding path program 7 times [2021-02-23 23:05:35,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:35,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402063366] [2021-02-23 23:05:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:36,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:36,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:36,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:36,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:36,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-02-23 23:05:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:36,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:36,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402063366] [2021-02-23 23:05:36,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:36,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-23 23:05:36,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943754272] [2021-02-23 23:05:36,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 23:05:36,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:36,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 23:05:36,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-02-23 23:05:36,279 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 18 states. [2021-02-23 23:05:36,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:36,729 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2021-02-23 23:05:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 23:05:36,730 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 114 [2021-02-23 23:05:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:36,733 INFO L225 Difference]: With dead ends: 167 [2021-02-23 23:05:36,733 INFO L226 Difference]: Without dead ends: 137 [2021-02-23 23:05:36,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2021-02-23 23:05:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-02-23 23:05:36,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 129. [2021-02-23 23:05:36,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-02-23 23:05:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2021-02-23 23:05:36,756 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 114 [2021-02-23 23:05:36,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:36,757 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2021-02-23 23:05:36,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 23:05:36,758 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2021-02-23 23:05:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-02-23 23:05:36,763 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:36,763 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:36,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 23:05:36,764 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:36,765 INFO L82 PathProgramCache]: Analyzing trace with hash -535066576, now seen corresponding path program 8 times [2021-02-23 23:05:36,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:36,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315687127] [2021-02-23 23:05:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:36,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:36,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:36,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:36,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:37,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:37,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-02-23 23:05:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:37,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:37,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315687127] [2021-02-23 23:05:37,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:37,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-02-23 23:05:37,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846899161] [2021-02-23 23:05:37,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 23:05:37,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 23:05:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-02-23 23:05:37,164 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 20 states. [2021-02-23 23:05:37,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:37,814 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2021-02-23 23:05:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 23:05:37,814 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 124 [2021-02-23 23:05:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:37,816 INFO L225 Difference]: With dead ends: 177 [2021-02-23 23:05:37,816 INFO L226 Difference]: Without dead ends: 147 [2021-02-23 23:05:37,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 23:05:37,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-02-23 23:05:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2021-02-23 23:05:37,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-02-23 23:05:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2021-02-23 23:05:37,828 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 124 [2021-02-23 23:05:37,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:37,829 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2021-02-23 23:05:37,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 23:05:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2021-02-23 23:05:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-02-23 23:05:37,830 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:37,831 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:37,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 23:05:37,831 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:37,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:37,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1980878794, now seen corresponding path program 9 times [2021-02-23 23:05:37,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:37,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756062939] [2021-02-23 23:05:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:37,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:37,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:37,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:37,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:38,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:38,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:38,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-02-23 23:05:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:38,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:38,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756062939] [2021-02-23 23:05:38,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:38,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-02-23 23:05:38,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69185404] [2021-02-23 23:05:38,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 23:05:38,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:38,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 23:05:38,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-02-23 23:05:38,254 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 22 states. [2021-02-23 23:05:38,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:38,810 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2021-02-23 23:05:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-23 23:05:38,811 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 134 [2021-02-23 23:05:38,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:38,812 INFO L225 Difference]: With dead ends: 187 [2021-02-23 23:05:38,813 INFO L226 Difference]: Without dead ends: 157 [2021-02-23 23:05:38,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2021-02-23 23:05:38,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-02-23 23:05:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2021-02-23 23:05:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2021-02-23 23:05:38,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2021-02-23 23:05:38,825 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 134 [2021-02-23 23:05:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:38,826 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2021-02-23 23:05:38,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 23:05:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2021-02-23 23:05:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-02-23 23:05:38,827 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:38,828 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:38,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 23:05:38,828 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:38,829 INFO L82 PathProgramCache]: Analyzing trace with hash 669714620, now seen corresponding path program 10 times [2021-02-23 23:05:38,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:38,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526407432] [2021-02-23 23:05:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:38,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:38,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:38,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:39,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:39,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:39,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 23:05:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:39,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:39,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526407432] [2021-02-23 23:05:39,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:39,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-02-23 23:05:39,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350400337] [2021-02-23 23:05:39,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 23:05:39,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:39,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 23:05:39,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2021-02-23 23:05:39,287 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 24 states. [2021-02-23 23:05:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:39,829 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2021-02-23 23:05:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-23 23:05:39,830 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 144 [2021-02-23 23:05:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:39,832 INFO L225 Difference]: With dead ends: 197 [2021-02-23 23:05:39,832 INFO L226 Difference]: Without dead ends: 167 [2021-02-23 23:05:39,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=605, Invalid=1287, Unknown=0, NotChecked=0, Total=1892 [2021-02-23 23:05:39,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-02-23 23:05:39,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 159. [2021-02-23 23:05:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2021-02-23 23:05:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2021-02-23 23:05:39,845 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 144 [2021-02-23 23:05:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:39,845 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2021-02-23 23:05:39,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 23:05:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2021-02-23 23:05:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-23 23:05:39,848 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:39,848 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:39,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 23:05:39,848 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:39,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:39,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1634693570, now seen corresponding path program 11 times [2021-02-23 23:05:39,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:39,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339967421] [2021-02-23 23:05:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:39,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:39,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:39,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:40,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:40,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 23:05:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:40,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:40,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339967421] [2021-02-23 23:05:40,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:40,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-02-23 23:05:40,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16839938] [2021-02-23 23:05:40,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-23 23:05:40,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:40,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-23 23:05:40,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-02-23 23:05:40,281 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 26 states. [2021-02-23 23:05:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:41,008 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2021-02-23 23:05:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-23 23:05:41,009 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 154 [2021-02-23 23:05:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:41,011 INFO L225 Difference]: With dead ends: 207 [2021-02-23 23:05:41,011 INFO L226 Difference]: Without dead ends: 177 [2021-02-23 23:05:41,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=720, Invalid=1536, Unknown=0, NotChecked=0, Total=2256 [2021-02-23 23:05:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-02-23 23:05:41,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 169. [2021-02-23 23:05:41,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-02-23 23:05:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2021-02-23 23:05:41,029 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 154 [2021-02-23 23:05:41,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:41,029 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2021-02-23 23:05:41,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-23 23:05:41,029 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2021-02-23 23:05:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-02-23 23:05:41,031 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:41,031 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:41,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 23:05:41,032 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:41,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:41,033 INFO L82 PathProgramCache]: Analyzing trace with hash -794768568, now seen corresponding path program 12 times [2021-02-23 23:05:41,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:41,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898208313] [2021-02-23 23:05:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:41,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:41,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:41,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:41,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:41,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-23 23:05:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:41,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:41,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:41,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898208313] [2021-02-23 23:05:41,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:41,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-02-23 23:05:41,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675156581] [2021-02-23 23:05:41,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-23 23:05:41,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:41,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-23 23:05:41,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-02-23 23:05:41,543 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 28 states. [2021-02-23 23:05:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:42,311 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2021-02-23 23:05:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-23 23:05:42,312 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 164 [2021-02-23 23:05:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:42,314 INFO L225 Difference]: With dead ends: 217 [2021-02-23 23:05:42,315 INFO L226 Difference]: Without dead ends: 187 [2021-02-23 23:05:42,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=845, Invalid=1807, Unknown=0, NotChecked=0, Total=2652 [2021-02-23 23:05:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-02-23 23:05:42,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 179. [2021-02-23 23:05:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2021-02-23 23:05:42,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2021-02-23 23:05:42,327 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 164 [2021-02-23 23:05:42,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:42,328 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2021-02-23 23:05:42,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-23 23:05:42,328 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2021-02-23 23:05:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-23 23:05:42,330 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:42,330 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:42,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 23:05:42,331 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:42,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:42,331 INFO L82 PathProgramCache]: Analyzing trace with hash 678196558, now seen corresponding path program 13 times [2021-02-23 23:05:42,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:42,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577554422] [2021-02-23 23:05:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:42,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:42,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:42,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:42,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:42,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-23 23:05:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:42,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:42,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:42,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577554422] [2021-02-23 23:05:42,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:42,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-02-23 23:05:42,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283294880] [2021-02-23 23:05:42,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-23 23:05:42,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:42,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-23 23:05:42,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-02-23 23:05:42,987 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 30 states. [2021-02-23 23:05:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:43,970 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2021-02-23 23:05:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-23 23:05:43,970 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2021-02-23 23:05:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:43,973 INFO L225 Difference]: With dead ends: 227 [2021-02-23 23:05:43,973 INFO L226 Difference]: Without dead ends: 197 [2021-02-23 23:05:43,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=980, Invalid=2100, Unknown=0, NotChecked=0, Total=3080 [2021-02-23 23:05:43,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-02-23 23:05:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 189. [2021-02-23 23:05:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2021-02-23 23:05:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2021-02-23 23:05:43,987 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 174 [2021-02-23 23:05:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:43,988 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2021-02-23 23:05:43,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-02-23 23:05:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2021-02-23 23:05:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-02-23 23:05:43,990 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:43,991 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:43,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 23:05:43,991 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:43,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash -628633644, now seen corresponding path program 14 times [2021-02-23 23:05:43,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:43,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398739552] [2021-02-23 23:05:43,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:44,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:44,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:44,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:44,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:44,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:44,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-23 23:05:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:44,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:44,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:44,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398739552] [2021-02-23 23:05:44,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:44,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-02-23 23:05:44,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696512215] [2021-02-23 23:05:44,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-23 23:05:44,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:44,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-23 23:05:44,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2021-02-23 23:05:44,620 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 32 states. [2021-02-23 23:05:45,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:45,625 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2021-02-23 23:05:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-23 23:05:45,626 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 184 [2021-02-23 23:05:45,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:45,628 INFO L225 Difference]: With dead ends: 237 [2021-02-23 23:05:45,628 INFO L226 Difference]: Without dead ends: 207 [2021-02-23 23:05:45,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1125, Invalid=2415, Unknown=0, NotChecked=0, Total=3540 [2021-02-23 23:05:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-02-23 23:05:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 199. [2021-02-23 23:05:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-02-23 23:05:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2021-02-23 23:05:45,640 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 184 [2021-02-23 23:05:45,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:45,640 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2021-02-23 23:05:45,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-02-23 23:05:45,640 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2021-02-23 23:05:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-02-23 23:05:45,642 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:45,643 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:45,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 23:05:45,643 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:45,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1030765274, now seen corresponding path program 15 times [2021-02-23 23:05:45,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:45,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411280213] [2021-02-23 23:05:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:45,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:45,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:45,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:45,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:46,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:46,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:46,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:46,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:46,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:46,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:46,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:46,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:46,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:46,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 23:05:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:46,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:46,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:46,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411280213] [2021-02-23 23:05:46,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:46,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-02-23 23:05:46,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013146823] [2021-02-23 23:05:46,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-02-23 23:05:46,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:46,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-02-23 23:05:46,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2021-02-23 23:05:46,307 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 34 states. [2021-02-23 23:05:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:47,434 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2021-02-23 23:05:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-23 23:05:47,434 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 194 [2021-02-23 23:05:47,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:47,436 INFO L225 Difference]: With dead ends: 247 [2021-02-23 23:05:47,436 INFO L226 Difference]: Without dead ends: 217 [2021-02-23 23:05:47,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1280, Invalid=2752, Unknown=0, NotChecked=0, Total=4032 [2021-02-23 23:05:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-02-23 23:05:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 209. [2021-02-23 23:05:47,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-23 23:05:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2021-02-23 23:05:47,449 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 194 [2021-02-23 23:05:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:47,450 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2021-02-23 23:05:47,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-02-23 23:05:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2021-02-23 23:05:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-23 23:05:47,452 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:47,453 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:47,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 23:05:47,453 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:47,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:47,453 INFO L82 PathProgramCache]: Analyzing trace with hash 845878880, now seen corresponding path program 16 times [2021-02-23 23:05:47,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:47,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859567587] [2021-02-23 23:05:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:47,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:47,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:47,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:47,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:48,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:48,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:48,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:48,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:48,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:48,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:48,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:48,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:48,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:48,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 23:05:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:48,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:48,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:48,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859567587] [2021-02-23 23:05:48,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:48,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-02-23 23:05:48,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50853309] [2021-02-23 23:05:48,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-23 23:05:48,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:48,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-23 23:05:48,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 23:05:48,187 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 36 states. [2021-02-23 23:05:49,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:49,544 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2021-02-23 23:05:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-02-23 23:05:49,544 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 204 [2021-02-23 23:05:49,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:49,546 INFO L225 Difference]: With dead ends: 257 [2021-02-23 23:05:49,546 INFO L226 Difference]: Without dead ends: 227 [2021-02-23 23:05:49,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1445, Invalid=3111, Unknown=0, NotChecked=0, Total=4556 [2021-02-23 23:05:49,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-02-23 23:05:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 219. [2021-02-23 23:05:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-23 23:05:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2021-02-23 23:05:49,559 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 204 [2021-02-23 23:05:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:49,560 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2021-02-23 23:05:49,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-02-23 23:05:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2021-02-23 23:05:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-23 23:05:49,563 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:49,563 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:49,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 23:05:49,563 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:49,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1267057254, now seen corresponding path program 17 times [2021-02-23 23:05:49,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:49,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450927372] [2021-02-23 23:05:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:49,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:49,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:49,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:49,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:50,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:50,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:50,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:50,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-02-23 23:05:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:50,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:50,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:50,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450927372] [2021-02-23 23:05:50,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:50,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-02-23 23:05:50,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76004309] [2021-02-23 23:05:50,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-02-23 23:05:50,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:50,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-02-23 23:05:50,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2021-02-23 23:05:50,416 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 38 states. [2021-02-23 23:05:51,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:51,837 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2021-02-23 23:05:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-02-23 23:05:51,837 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 214 [2021-02-23 23:05:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:51,839 INFO L225 Difference]: With dead ends: 267 [2021-02-23 23:05:51,839 INFO L226 Difference]: Without dead ends: 237 [2021-02-23 23:05:51,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1620, Invalid=3492, Unknown=0, NotChecked=0, Total=5112 [2021-02-23 23:05:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-02-23 23:05:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 229. [2021-02-23 23:05:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-23 23:05:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2021-02-23 23:05:51,852 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 214 [2021-02-23 23:05:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:51,852 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2021-02-23 23:05:51,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-02-23 23:05:51,853 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2021-02-23 23:05:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-02-23 23:05:51,855 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:51,856 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:51,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 23:05:51,856 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:51,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:51,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1905630956, now seen corresponding path program 18 times [2021-02-23 23:05:51,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:51,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270320293] [2021-02-23 23:05:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:51,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:51,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:51,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:51,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:51,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:51,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:51,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:51,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:51,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:51,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:51,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:51,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:52,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:52,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:52,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:52,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-02-23 23:05:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:52,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:52,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1548 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:52,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270320293] [2021-02-23 23:05:52,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:52,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-02-23 23:05:52,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328113242] [2021-02-23 23:05:52,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-02-23 23:05:52,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:52,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-02-23 23:05:52,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2021-02-23 23:05:52,801 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 40 states. [2021-02-23 23:05:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:54,138 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2021-02-23 23:05:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-02-23 23:05:54,139 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 224 [2021-02-23 23:05:54,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:54,142 INFO L225 Difference]: With dead ends: 277 [2021-02-23 23:05:54,142 INFO L226 Difference]: Without dead ends: 247 [2021-02-23 23:05:54,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1805, Invalid=3895, Unknown=0, NotChecked=0, Total=5700 [2021-02-23 23:05:54,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-02-23 23:05:54,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 239. [2021-02-23 23:05:54,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-02-23 23:05:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2021-02-23 23:05:54,156 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 224 [2021-02-23 23:05:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:54,156 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2021-02-23 23:05:54,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-02-23 23:05:54,156 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2021-02-23 23:05:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-02-23 23:05:54,158 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:54,158 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:54,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 23:05:54,158 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:54,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:54,159 INFO L82 PathProgramCache]: Analyzing trace with hash 171445234, now seen corresponding path program 19 times [2021-02-23 23:05:54,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:54,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818493128] [2021-02-23 23:05:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:54,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:54,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:54,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:54,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:55,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:55,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:55,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:55,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:55,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-02-23 23:05:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:55,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:55,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818493128] [2021-02-23 23:05:55,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:55,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-02-23 23:05:55,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140363625] [2021-02-23 23:05:55,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-02-23 23:05:55,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:55,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-02-23 23:05:55,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 23:05:55,228 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 42 states. [2021-02-23 23:05:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:56,763 INFO L93 Difference]: Finished difference Result 279 states and 281 transitions. [2021-02-23 23:05:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-02-23 23:05:56,763 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 234 [2021-02-23 23:05:56,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:56,765 INFO L225 Difference]: With dead ends: 279 [2021-02-23 23:05:56,765 INFO L226 Difference]: Without dead ends: 249 [2021-02-23 23:05:56,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2000, Invalid=4320, Unknown=0, NotChecked=0, Total=6320 [2021-02-23 23:05:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-02-23 23:05:56,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-02-23 23:05:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2021-02-23 23:05:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2021-02-23 23:05:56,778 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 234 [2021-02-23 23:05:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:56,779 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2021-02-23 23:05:56,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2021-02-23 23:05:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2021-02-23 23:05:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-02-23 23:05:56,781 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:56,781 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:56,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-23 23:05:56,781 INFO L428 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:56,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:56,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1647154824, now seen corresponding path program 20 times [2021-02-23 23:05:56,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:56,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79792984] [2021-02-23 23:05:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:05:56,900 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:05:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:05:57,039 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:05:57,114 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:05:57,114 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:05:57,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-23 23:05:57,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:05:57 BoogieIcfgContainer [2021-02-23 23:05:57,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:05:57,235 INFO L168 Benchmark]: Toolchain (without parser) took 27038.07 ms. Allocated memory was 161.5 MB in the beginning and 404.8 MB in the end (delta: 243.3 MB). Free memory was 138.6 MB in the beginning and 280.3 MB in the end (delta: -141.7 MB). Peak memory consumption was 102.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:57,236 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 161.5 MB. Free memory is still 141.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:05:57,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.41 ms. Allocated memory is still 161.5 MB. Free memory was 137.6 MB in the beginning and 127.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:57,236 INFO L168 Benchmark]: Boogie Preprocessor took 48.85 ms. Allocated memory is still 161.5 MB. Free memory was 127.7 MB in the beginning and 126.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:57,236 INFO L168 Benchmark]: RCFGBuilder took 798.85 ms. Allocated memory is still 161.5 MB. Free memory was 126.0 MB in the beginning and 144.8 MB in the end (delta: -18.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:57,236 INFO L168 Benchmark]: TraceAbstraction took 25792.02 ms. Allocated memory was 161.5 MB in the beginning and 404.8 MB in the end (delta: 243.3 MB). Free memory was 144.2 MB in the beginning and 280.3 MB in the end (delta: -136.0 MB). Peak memory consumption was 107.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:57,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 161.5 MB. Free memory is still 141.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 376.41 ms. Allocated memory is still 161.5 MB. Free memory was 137.6 MB in the beginning and 127.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.85 ms. Allocated memory is still 161.5 MB. Free memory was 127.7 MB in the beginning and 126.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 798.85 ms. Allocated memory is still 161.5 MB. Free memory was 126.0 MB in the beginning and 144.8 MB in the end (delta: -18.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25792.02 ms. Allocated memory was 161.5 MB in the beginning and 404.8 MB in the end (delta: 243.3 MB). Free memory was 144.2 MB in the beginning and 280.3 MB in the end (delta: -136.0 MB). Peak memory consumption was 107.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] struct dummy ad1[20], *ad2; VAL [ad1={3:0}] [L18] int i, j, *pa; VAL [ad1={3:0}] [L19] j=0 VAL [ad1={3:0}, j=0] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=0] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-1, ad1={3:0}, j=0] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2, ad1={3:0}, j=0] [L19] j++ VAL [ad1={3:0}, j=1] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=1] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-3, ad1={3:0}, j=1] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-4, ad1={3:0}, j=1] [L19] j++ VAL [ad1={3:0}, j=2] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=2] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-5, ad1={3:0}, j=2] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-6, ad1={3:0}, j=2] [L19] j++ VAL [ad1={3:0}, j=3] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=3] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-7, ad1={3:0}, j=3] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-8, ad1={3:0}, j=3] [L19] j++ VAL [ad1={3:0}, j=4] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=4] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=9, ad1={3:0}, j=4] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-9, ad1={3:0}, j=4] [L19] j++ VAL [ad1={3:0}, j=5] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=5] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=29, ad1={3:0}, j=5] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-11, ad1={3:0}, j=5] [L19] j++ VAL [ad1={3:0}, j=6] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=6] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-12, ad1={3:0}, j=6] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=13, ad1={3:0}, j=6] [L19] j++ VAL [ad1={3:0}, j=7] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=7] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-13, ad1={3:0}, j=7] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=14, ad1={3:0}, j=7] [L19] j++ VAL [ad1={3:0}, j=8] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=8] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-14, ad1={3:0}, j=8] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=15, ad1={3:0}, j=8] [L19] j++ VAL [ad1={3:0}, j=9] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=9] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-15, ad1={3:0}, j=9] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-16, ad1={3:0}, j=9] [L19] j++ VAL [ad1={3:0}, j=10] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=10] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=17, ad1={3:0}, j=10] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-17, ad1={3:0}, j=10] [L19] j++ VAL [ad1={3:0}, j=11] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=11] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=18, ad1={3:0}, j=11] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-18, ad1={3:0}, j=11] [L19] j++ VAL [ad1={3:0}, j=12] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=12] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=19, ad1={3:0}, j=12] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-19, ad1={3:0}, j=12] [L19] j++ VAL [ad1={3:0}, j=13] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=13] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-20, ad1={3:0}, j=13] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=21, ad1={3:0}, j=13] [L19] j++ VAL [ad1={3:0}, j=14] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=14] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-21, ad1={3:0}, j=14] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=22, ad1={3:0}, j=14] [L19] j++ VAL [ad1={3:0}, j=15] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=15] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-22, ad1={3:0}, j=15] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=23, ad1={3:0}, j=15] [L19] j++ VAL [ad1={3:0}, j=16] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=16] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-23, ad1={3:0}, j=16] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-24, ad1={3:0}, j=16] [L19] j++ VAL [ad1={3:0}, j=17] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=17] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=25, ad1={3:0}, j=17] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-25, ad1={3:0}, j=17] [L19] j++ VAL [ad1={3:0}, j=18] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=18] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=26, ad1={3:0}, j=18] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-26, ad1={3:0}, j=18] [L19] j++ VAL [ad1={3:0}, j=19] [L19] COND TRUE j<20 VAL [ad1={3:0}, j=19] [L20] ad1[j].a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=27, ad1={3:0}, j=19] [L21] ad1[j].b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-27, ad1={3:0}, j=19] [L19] j++ VAL [ad1={3:0}, j=20] [L19] COND FALSE !(j<20) VAL [ad1={3:0}, j=20] [L23] i = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, ad1={3:0}, i=0, j=20] [L24] COND TRUE i >= 0 && i < 10 VAL [ad1={3:0}, i=0, j=20] [L25] ad2 = ad1 VAL [ad1={3:0}, ad2={3:0}, i=0, j=20] [L26] ad1[i].a = i VAL [ad1={3:0}, ad2={3:0}, i=0, j=20] [L27] pa = &ad1[i].a VAL [ad1={3:0}, ad2={3:0}, i=0, j=20, pa={3:0}] [L28] EXPR ad2[i].a VAL [ad1={3:0}, ad2={3:0}, ad2[i].a=0, i=0, j=20, pa={3:0}] [L28] i = ad2[i].a + 10 VAL [ad1={3:0}, ad2={3:0}, ad2[i].a=0, i=10, j=20, pa={3:0}] [L29] EXPR \read(*pa) VAL [\read(*pa)=0, ad1={3:0}, ad2={3:0}, i=10, j=20, pa={3:0}] [L29] COND FALSE !(i < *pa) VAL [\read(*pa)=0, ad1={3:0}, ad2={3:0}, i=10, j=20, pa={3:0}] [L32] CALL, EXPR check(ad1, i) VAL [\old(b)=10, ad1={3:0}] [L12] EXPR ad1[b].a VAL [\old(b)=10, ad1={3:0}, ad1={3:0}, ad1[b].a=17, b=10] [L12] return ad1[b].a == b; VAL [\old(b)=10, \result=0, ad1={3:0}, ad1={3:0}, ad1[b].a=17, b=10] [L32] RET, EXPR check(ad1, i) VAL [ad1={3:0}, ad2={3:0}, check(ad1, i)=0, i=10, j=20, pa={3:0}] [L32] COND TRUE !check(ad1, i) VAL [ad1={3:0}, ad2={3:0}, check(ad1, i)=0, i=10, j=20, pa={3:0}] [L39] reach_error() VAL [ad1={3:0}, ad2={3:0}, i=10, j=20, pa={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.5s, OverallIterations: 22, TraceHistogramMax: 20, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1128 SDtfs, 1872 SDslu, 12707 SDs, 0 SdLazy, 5266 SolverSat, 320 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 906 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 801 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7391 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 152 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 3066 NumberOfCodeBlocks, 3066 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2801 ConstructedInterpolants, 0 QuantifiedInterpolants, 1196011 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 2 PerfectInterpolantSequences, 0/11590 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...