/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/recursive-simple/id_i20_o20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:56:49,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:56:49,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:56:49,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:56:50,087 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 22:56:50,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:56:50,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:56:50,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:56:50,123 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:56:50,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:56:50,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:56:50,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:56:50,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:56:50,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:56:50,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:56:50,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:56:50,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:56:50,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:56:50,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:56:50,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:56:50,129 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:56:50,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:56:50,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:56:50,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:56:50,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:56:50,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:56:50,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:56:50,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:56:50,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:56:50,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:56:50,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:56:50,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:56:50,571 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:56:50,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i20_o20-1.c [2021-02-23 22:56:50,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/306f0def8/f8cbb62797ac4cf7adae6b3b11d0fbc4/FLAGd10d7cb83 [2021-02-23 22:56:51,286 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:56:51,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i20_o20-1.c [2021-02-23 22:56:51,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/306f0def8/f8cbb62797ac4cf7adae6b3b11d0fbc4/FLAGd10d7cb83 [2021-02-23 22:56:51,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/306f0def8/f8cbb62797ac4cf7adae6b3b11d0fbc4 [2021-02-23 22:56:51,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:56:51,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:56:51,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:56:51,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:56:51,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:56:51,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:56:51" (1/1) ... [2021-02-23 22:56:51,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229e8eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:51, skipping insertion in model container [2021-02-23 22:56:51,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:56:51" (1/1) ... [2021-02-23 22:56:51,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:56:51,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:56:51,957 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i20_o20-1.c[454,467] [2021-02-23 22:56:51,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:56:51,973 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:56:51,991 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i20_o20-1.c[454,467] [2021-02-23 22:56:51,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:56:52,009 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:56:52,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:52 WrapperNode [2021-02-23 22:56:52,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:56:52,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:56:52,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:56:52,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:56:52,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:52" (1/1) ... [2021-02-23 22:56:52,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:52" (1/1) ... [2021-02-23 22:56:52,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:52" (1/1) ... [2021-02-23 22:56:52,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:52" (1/1) ... [2021-02-23 22:56:52,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:52" (1/1) ... [2021-02-23 22:56:52,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:52" (1/1) ... [2021-02-23 22:56:52,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:52" (1/1) ... [2021-02-23 22:56:52,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:56:52,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:56:52,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:56:52,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:56:52,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:52" (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 22:56:52,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:56:52,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:56:52,157 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:56:52,157 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-23 22:56:52,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:56:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 22:56:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:56:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:56:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:56:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:56:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-23 22:56:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:56:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:56:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:56:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:56:52,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:56:52,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:56:52,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:56:52,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:56:52,437 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 22:56:52,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:56:52 BoogieIcfgContainer [2021-02-23 22:56:52,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:56:52,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:56:52,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:56:52,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:56:52,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:56:51" (1/3) ... [2021-02-23 22:56:52,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755742fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:56:52, skipping insertion in model container [2021-02-23 22:56:52,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:52" (2/3) ... [2021-02-23 22:56:52,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755742fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:56:52, skipping insertion in model container [2021-02-23 22:56:52,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:56:52" (3/3) ... [2021-02-23 22:56:52,482 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i20_o20-1.c [2021-02-23 22:56:52,491 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:56:52,496 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:56:52,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:56:52,561 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:56:52,562 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:56:52,562 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:56:52,562 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:56:52,562 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:56:52,562 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:56:52,562 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:56:52,563 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:56:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-23 22:56:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 22:56:52,590 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:52,591 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] [2021-02-23 22:56:52,591 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:52,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:52,599 INFO L82 PathProgramCache]: Analyzing trace with hash -777358502, now seen corresponding path program 1 times [2021-02-23 22:56:52,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:52,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408519195] [2021-02-23 22:56:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:52,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:52,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:52,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:52,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:52,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:52,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:53,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:56:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:53,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:53,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:53,072 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 22:56:53,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408519195] [2021-02-23 22:56:53,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:53,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:56:53,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606947314] [2021-02-23 22:56:53,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:56:53,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:53,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:56:53,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:56:53,102 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2021-02-23 22:56:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:53,542 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-02-23 22:56:53,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:56:53,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-23 22:56:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:53,554 INFO L225 Difference]: With dead ends: 46 [2021-02-23 22:56:53,554 INFO L226 Difference]: Without dead ends: 31 [2021-02-23 22:56:53,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:56:53,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-23 22:56:53,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-23 22:56:53,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-23 22:56:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-02-23 22:56:53,616 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2021-02-23 22:56:53,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:53,617 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-02-23 22:56:53,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:56:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-02-23 22:56:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-23 22:56:53,620 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:53,620 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:53,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:56:53,621 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash 814440848, now seen corresponding path program 1 times [2021-02-23 22:56:53,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:53,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684719687] [2021-02-23 22:56:53,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:53,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:53,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:53,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:53,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:53,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:56:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:53,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:53,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:53,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:53,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:53,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:53,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:56:53,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684719687] [2021-02-23 22:56:53,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:53,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 22:56:53,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099927247] [2021-02-23 22:56:53,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 22:56:53,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:53,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 22:56:53,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 22:56:53,882 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2021-02-23 22:56:54,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:54,279 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-02-23 22:56:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:56:54,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-02-23 22:56:54,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:54,282 INFO L225 Difference]: With dead ends: 42 [2021-02-23 22:56:54,282 INFO L226 Difference]: Without dead ends: 36 [2021-02-23 22:56:54,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 22:56:54,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-23 22:56:54,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-23 22:56:54,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-23 22:56:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-02-23 22:56:54,298 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2021-02-23 22:56:54,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:54,299 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-02-23 22:56:54,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 22:56:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-02-23 22:56:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 22:56:54,301 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:54,301 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-02-23 22:56:54,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:56:54,302 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:54,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:54,303 INFO L82 PathProgramCache]: Analyzing trace with hash -545888486, now seen corresponding path program 2 times [2021-02-23 22:56:54,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:54,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987763767] [2021-02-23 22:56:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:54,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:54,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:54,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:54,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:54,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:54,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:54,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:54,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:54,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:54,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:56:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:54,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:54,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:54,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:54,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:54,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:54,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:54,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:54,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:54,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:54,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:54,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:54,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:54,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:54,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-23 22:56:54,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987763767] [2021-02-23 22:56:54,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:54,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-23 22:56:54,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341989088] [2021-02-23 22:56:54,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 22:56:54,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:54,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 22:56:54,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 22:56:54,645 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2021-02-23 22:56:55,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:55,209 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-02-23 22:56:55,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 22:56:55,210 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2021-02-23 22:56:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:55,212 INFO L225 Difference]: With dead ends: 47 [2021-02-23 22:56:55,212 INFO L226 Difference]: Without dead ends: 41 [2021-02-23 22:56:55,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-02-23 22:56:55,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-23 22:56:55,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-23 22:56:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-23 22:56:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-02-23 22:56:55,232 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 40 [2021-02-23 22:56:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:55,232 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-02-23 22:56:55,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 22:56:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-02-23 22:56:55,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 22:56:55,235 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:55,235 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-02-23 22:56:55,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:56:55,235 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1925368272, now seen corresponding path program 3 times [2021-02-23 22:56:55,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:55,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007011264] [2021-02-23 22:56:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:55,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:55,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:55,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:55,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:55,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:55,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:56:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:55,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:55,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:55,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:55,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:55,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:55,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:55,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:55,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:55,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:55,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:55,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:55,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-02-23 22:56:55,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007011264] [2021-02-23 22:56:55,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:55,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-23 22:56:55,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367986312] [2021-02-23 22:56:55,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:56:55,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:55,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:56:55,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:56:55,565 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 9 states. [2021-02-23 22:56:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:56,181 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-02-23 22:56:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 22:56:56,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-02-23 22:56:56,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:56,184 INFO L225 Difference]: With dead ends: 52 [2021-02-23 22:56:56,184 INFO L226 Difference]: Without dead ends: 46 [2021-02-23 22:56:56,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:56:56,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-23 22:56:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-02-23 22:56:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-23 22:56:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-02-23 22:56:56,204 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 48 [2021-02-23 22:56:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:56,204 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-02-23 22:56:56,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:56:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-02-23 22:56:56,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 22:56:56,206 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:56,207 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-02-23 22:56:56,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:56:56,207 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:56,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:56,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1702046426, now seen corresponding path program 4 times [2021-02-23 22:56:56,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:56,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311702173] [2021-02-23 22:56:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:56,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:56,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:56,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:56,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:56:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:56,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:56,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:56,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:56,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:56,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:56,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-02-23 22:56:56,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311702173] [2021-02-23 22:56:56,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:56,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 22:56:56,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949732611] [2021-02-23 22:56:56,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 22:56:56,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:56,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 22:56:56,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:56:56,586 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 10 states. [2021-02-23 22:56:57,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:57,278 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-02-23 22:56:57,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 22:56:57,279 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2021-02-23 22:56:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:57,281 INFO L225 Difference]: With dead ends: 57 [2021-02-23 22:56:57,281 INFO L226 Difference]: Without dead ends: 51 [2021-02-23 22:56:57,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:56:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-23 22:56:57,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-23 22:56:57,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-23 22:56:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-02-23 22:56:57,297 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 56 [2021-02-23 22:56:57,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:57,298 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-02-23 22:56:57,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 22:56:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-02-23 22:56:57,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-23 22:56:57,300 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:57,301 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-02-23 22:56:57,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 22:56:57,301 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:57,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:57,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1874632176, now seen corresponding path program 5 times [2021-02-23 22:56:57,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:57,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816840944] [2021-02-23 22:56:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:57,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:57,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:57,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:57,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:56:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:57,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:57,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:57,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:57,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:57,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:57,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:57,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-23 22:56:57,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816840944] [2021-02-23 22:56:57,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:57,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 22:56:57,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189054455] [2021-02-23 22:56:57,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 22:56:57,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:57,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 22:56:57,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 22:56:57,618 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 11 states. [2021-02-23 22:56:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:58,458 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-02-23 22:56:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:56:58,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2021-02-23 22:56:58,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:58,466 INFO L225 Difference]: With dead ends: 62 [2021-02-23 22:56:58,467 INFO L226 Difference]: Without dead ends: 56 [2021-02-23 22:56:58,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-02-23 22:56:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-23 22:56:58,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-02-23 22:56:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-23 22:56:58,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-02-23 22:56:58,509 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 64 [2021-02-23 22:56:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:58,510 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-02-23 22:56:58,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 22:56:58,512 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-02-23 22:56:58,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-23 22:56:58,515 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:58,521 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 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] [2021-02-23 22:56:58,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 22:56:58,521 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:58,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:58,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1809628826, now seen corresponding path program 6 times [2021-02-23 22:56:58,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:58,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780783517] [2021-02-23 22:56:58,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:58,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:58,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:58,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:58,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:58,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:56:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:58,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:58,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:58,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:58,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:58,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:58,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:58,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:58,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-02-23 22:56:58,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780783517] [2021-02-23 22:56:58,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:58,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:56:58,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928283445] [2021-02-23 22:56:58,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:56:58,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:58,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:56:58,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:56:58,918 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 12 states. [2021-02-23 22:56:59,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:59,830 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-02-23 22:56:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 22:56:59,831 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2021-02-23 22:56:59,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:59,832 INFO L225 Difference]: With dead ends: 67 [2021-02-23 22:56:59,833 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 22:56:59,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2021-02-23 22:56:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 22:56:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-23 22:56:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 22:56:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-02-23 22:56:59,850 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 72 [2021-02-23 22:56:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:59,850 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-02-23 22:56:59,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:56:59,851 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-02-23 22:56:59,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-23 22:56:59,852 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:59,852 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2021-02-23 22:56:59,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 22:56:59,853 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:59,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1448159824, now seen corresponding path program 7 times [2021-02-23 22:56:59,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:59,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934724486] [2021-02-23 22:56:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:59,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:59,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:59,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:59,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:59,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:59,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:59,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:59,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:56:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:59,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:59,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:59,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:59,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:59,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:00,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:00,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:00,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:00,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:00,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:00,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:00,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:00,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-02-23 22:57:00,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934724486] [2021-02-23 22:57:00,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:00,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-23 22:57:00,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790111917] [2021-02-23 22:57:00,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 22:57:00,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:00,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 22:57:00,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-02-23 22:57:00,257 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 13 states. [2021-02-23 22:57:01,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:01,094 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-02-23 22:57:01,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 22:57:01,095 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-23 22:57:01,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:01,096 INFO L225 Difference]: With dead ends: 72 [2021-02-23 22:57:01,096 INFO L226 Difference]: Without dead ends: 66 [2021-02-23 22:57:01,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-02-23 22:57:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-23 22:57:01,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-02-23 22:57:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-23 22:57:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-02-23 22:57:01,112 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 80 [2021-02-23 22:57:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:01,113 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-02-23 22:57:01,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 22:57:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-02-23 22:57:01,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-23 22:57:01,115 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:01,115 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2021-02-23 22:57:01,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 22:57:01,115 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:01,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:01,116 INFO L82 PathProgramCache]: Analyzing trace with hash -537976230, now seen corresponding path program 8 times [2021-02-23 22:57:01,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:01,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159719135] [2021-02-23 22:57:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:01,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:01,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:01,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:01,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-02-23 22:57:01,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159719135] [2021-02-23 22:57:01,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:01,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-02-23 22:57:01,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399452397] [2021-02-23 22:57:01,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 22:57:01,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:01,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 22:57:01,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-02-23 22:57:01,572 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 14 states. [2021-02-23 22:57:02,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:02,550 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2021-02-23 22:57:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 22:57:02,551 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2021-02-23 22:57:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:02,552 INFO L225 Difference]: With dead ends: 77 [2021-02-23 22:57:02,552 INFO L226 Difference]: Without dead ends: 71 [2021-02-23 22:57:02,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-02-23 22:57:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-02-23 22:57:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-02-23 22:57:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-23 22:57:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-02-23 22:57:02,569 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 88 [2021-02-23 22:57:02,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:02,570 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-02-23 22:57:02,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 22:57:02,570 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-02-23 22:57:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-23 22:57:02,572 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:02,572 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 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] [2021-02-23 22:57:02,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 22:57:02,572 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:02,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:02,573 INFO L82 PathProgramCache]: Analyzing trace with hash -852483440, now seen corresponding path program 9 times [2021-02-23 22:57:02,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:02,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169968829] [2021-02-23 22:57:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:02,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:02,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:02,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:02,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:02,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:02,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:02,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:02,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:02,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:02,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:02,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:02,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:02,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:02,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:02,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:03,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:03,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:03,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:03,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:03,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:03,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:03,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:03,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:03,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-02-23 22:57:03,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169968829] [2021-02-23 22:57:03,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:03,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-23 22:57:03,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658202827] [2021-02-23 22:57:03,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 22:57:03,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:03,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 22:57:03,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:57:03,148 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 15 states. [2021-02-23 22:57:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:04,233 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-02-23 22:57:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 22:57:04,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2021-02-23 22:57:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:04,236 INFO L225 Difference]: With dead ends: 82 [2021-02-23 22:57:04,236 INFO L226 Difference]: Without dead ends: 76 [2021-02-23 22:57:04,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2021-02-23 22:57:04,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-23 22:57:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-02-23 22:57:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-23 22:57:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-02-23 22:57:04,256 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 96 [2021-02-23 22:57:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:04,257 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-02-23 22:57:04,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 22:57:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-02-23 22:57:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-02-23 22:57:04,258 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:04,259 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 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] [2021-02-23 22:57:04,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 22:57:04,259 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:04,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1407604250, now seen corresponding path program 10 times [2021-02-23 22:57:04,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:04,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556927306] [2021-02-23 22:57:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:04,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:04,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:04,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-02-23 22:57:04,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556927306] [2021-02-23 22:57:04,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:04,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-23 22:57:04,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161665534] [2021-02-23 22:57:04,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 22:57:04,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:04,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 22:57:04,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-02-23 22:57:04,829 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 16 states. [2021-02-23 22:57:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:05,950 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2021-02-23 22:57:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 22:57:05,951 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2021-02-23 22:57:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:05,952 INFO L225 Difference]: With dead ends: 87 [2021-02-23 22:57:05,953 INFO L226 Difference]: Without dead ends: 81 [2021-02-23 22:57:05,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=268, Invalid=544, Unknown=0, NotChecked=0, Total=812 [2021-02-23 22:57:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-23 22:57:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-02-23 22:57:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-23 22:57:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-02-23 22:57:05,968 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 104 [2021-02-23 22:57:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:05,968 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-02-23 22:57:05,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 22:57:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-02-23 22:57:05,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-02-23 22:57:05,970 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:05,970 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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] [2021-02-23 22:57:05,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 22:57:05,970 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:05,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:05,971 INFO L82 PathProgramCache]: Analyzing trace with hash 2015644368, now seen corresponding path program 11 times [2021-02-23 22:57:05,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:05,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134529267] [2021-02-23 22:57:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:06,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:06,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:06,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-02-23 22:57:06,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134529267] [2021-02-23 22:57:06,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:06,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-23 22:57:06,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172629949] [2021-02-23 22:57:06,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 22:57:06,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:06,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 22:57:06,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:57:06,625 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 17 states. [2021-02-23 22:57:07,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:07,967 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2021-02-23 22:57:07,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 22:57:07,968 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2021-02-23 22:57:07,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:07,970 INFO L225 Difference]: With dead ends: 92 [2021-02-23 22:57:07,970 INFO L226 Difference]: Without dead ends: 86 [2021-02-23 22:57:07,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=309, Invalid=621, Unknown=0, NotChecked=0, Total=930 [2021-02-23 22:57:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-23 22:57:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-02-23 22:57:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 22:57:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2021-02-23 22:57:07,985 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 112 [2021-02-23 22:57:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:07,985 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2021-02-23 22:57:07,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 22:57:07,986 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2021-02-23 22:57:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-02-23 22:57:07,987 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:07,987 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 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] [2021-02-23 22:57:07,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 22:57:07,988 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:07,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:07,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1090627110, now seen corresponding path program 12 times [2021-02-23 22:57:07,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:07,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591178487] [2021-02-23 22:57:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:08,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:08,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-02-23 22:57:08,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591178487] [2021-02-23 22:57:08,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:08,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-23 22:57:08,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463174266] [2021-02-23 22:57:08,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 22:57:08,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:08,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 22:57:08,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2021-02-23 22:57:08,752 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 18 states. [2021-02-23 22:57:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:10,161 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2021-02-23 22:57:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 22:57:10,162 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 120 [2021-02-23 22:57:10,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:10,163 INFO L225 Difference]: With dead ends: 97 [2021-02-23 22:57:10,164 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 22:57:10,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=353, Invalid=703, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 22:57:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 22:57:10,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-02-23 22:57:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-23 22:57:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2021-02-23 22:57:10,178 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 120 [2021-02-23 22:57:10,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:10,179 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2021-02-23 22:57:10,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 22:57:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2021-02-23 22:57:10,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-02-23 22:57:10,181 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:10,181 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 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] [2021-02-23 22:57:10,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 22:57:10,181 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:10,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1787714800, now seen corresponding path program 13 times [2021-02-23 22:57:10,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:10,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355585221] [2021-02-23 22:57:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:10,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:10,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:10,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-02-23 22:57:10,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355585221] [2021-02-23 22:57:10,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:10,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-02-23 22:57:10,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082770697] [2021-02-23 22:57:10,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 22:57:10,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:10,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 22:57:10,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2021-02-23 22:57:10,910 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 19 states. [2021-02-23 22:57:12,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:12,488 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2021-02-23 22:57:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 22:57:12,489 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 128 [2021-02-23 22:57:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:12,491 INFO L225 Difference]: With dead ends: 102 [2021-02-23 22:57:12,491 INFO L226 Difference]: Without dead ends: 96 [2021-02-23 22:57:12,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=400, Invalid=790, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 22:57:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-02-23 22:57:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-02-23 22:57:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-02-23 22:57:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-02-23 22:57:12,506 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 128 [2021-02-23 22:57:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:12,506 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-02-23 22:57:12,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 22:57:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-02-23 22:57:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-02-23 22:57:12,508 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:12,508 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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] [2021-02-23 22:57:12,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 22:57:12,508 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:12,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1030958490, now seen corresponding path program 14 times [2021-02-23 22:57:12,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:12,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860411035] [2021-02-23 22:57:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:12,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:12,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:12,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-02-23 22:57:13,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860411035] [2021-02-23 22:57:13,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:13,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-02-23 22:57:13,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864276802] [2021-02-23 22:57:13,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 22:57:13,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:13,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 22:57:13,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2021-02-23 22:57:13,402 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 20 states. [2021-02-23 22:57:14,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:14,983 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2021-02-23 22:57:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 22:57:14,984 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 136 [2021-02-23 22:57:14,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:14,986 INFO L225 Difference]: With dead ends: 107 [2021-02-23 22:57:14,986 INFO L226 Difference]: Without dead ends: 101 [2021-02-23 22:57:14,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=450, Invalid=882, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 22:57:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-02-23 22:57:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-02-23 22:57:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-02-23 22:57:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2021-02-23 22:57:15,001 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 136 [2021-02-23 22:57:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:15,001 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2021-02-23 22:57:15,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 22:57:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2021-02-23 22:57:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-02-23 22:57:15,002 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:15,003 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 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] [2021-02-23 22:57:15,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 22:57:15,003 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:15,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1583098704, now seen corresponding path program 15 times [2021-02-23 22:57:15,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:15,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342625020] [2021-02-23 22:57:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:15,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:15,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:15,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-02-23 22:57:15,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342625020] [2021-02-23 22:57:15,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:15,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-23 22:57:15,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511863180] [2021-02-23 22:57:15,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 22:57:15,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:15,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 22:57:15,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2021-02-23 22:57:15,878 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 21 states. [2021-02-23 22:57:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:17,575 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2021-02-23 22:57:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 22:57:17,576 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 144 [2021-02-23 22:57:17,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:17,577 INFO L225 Difference]: With dead ends: 112 [2021-02-23 22:57:17,577 INFO L226 Difference]: Without dead ends: 106 [2021-02-23 22:57:17,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=503, Invalid=979, Unknown=0, NotChecked=0, Total=1482 [2021-02-23 22:57:17,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-23 22:57:17,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-02-23 22:57:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-23 22:57:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2021-02-23 22:57:17,593 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 144 [2021-02-23 22:57:17,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:17,594 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2021-02-23 22:57:17,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 22:57:17,594 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2021-02-23 22:57:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-02-23 22:57:17,595 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:17,595 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 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] [2021-02-23 22:57:17,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 22:57:17,596 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:17,596 INFO L82 PathProgramCache]: Analyzing trace with hash -796864166, now seen corresponding path program 16 times [2021-02-23 22:57:17,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:17,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441388780] [2021-02-23 22:57:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:17,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:17,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:17,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-02-23 22:57:18,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441388780] [2021-02-23 22:57:18,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:18,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-02-23 22:57:18,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184207332] [2021-02-23 22:57:18,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 22:57:18,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:18,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 22:57:18,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2021-02-23 22:57:18,661 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 22 states. [2021-02-23 22:57:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:20,485 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2021-02-23 22:57:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 22:57:20,486 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 152 [2021-02-23 22:57:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:20,488 INFO L225 Difference]: With dead ends: 117 [2021-02-23 22:57:20,488 INFO L226 Difference]: Without dead ends: 111 [2021-02-23 22:57:20,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=559, Invalid=1081, Unknown=0, NotChecked=0, Total=1640 [2021-02-23 22:57:20,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-23 22:57:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-02-23 22:57:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-02-23 22:57:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2021-02-23 22:57:20,503 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 152 [2021-02-23 22:57:20,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:20,504 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2021-02-23 22:57:20,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 22:57:20,504 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2021-02-23 22:57:20,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-02-23 22:57:20,505 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:20,505 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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] [2021-02-23 22:57:20,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 22:57:20,506 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:20,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:20,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1193796496, now seen corresponding path program 17 times [2021-02-23 22:57:20,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:20,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662930393] [2021-02-23 22:57:20,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:20,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:20,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-02-23 22:57:21,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662930393] [2021-02-23 22:57:21,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:21,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-02-23 22:57:21,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502752727] [2021-02-23 22:57:21,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-23 22:57:21,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:21,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-23 22:57:21,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2021-02-23 22:57:21,644 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 23 states. [2021-02-23 22:57:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:23,634 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2021-02-23 22:57:23,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 22:57:23,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 160 [2021-02-23 22:57:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:23,638 INFO L225 Difference]: With dead ends: 122 [2021-02-23 22:57:23,638 INFO L226 Difference]: Without dead ends: 116 [2021-02-23 22:57:23,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=618, Invalid=1188, Unknown=0, NotChecked=0, Total=1806 [2021-02-23 22:57:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-02-23 22:57:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-02-23 22:57:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-02-23 22:57:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2021-02-23 22:57:23,654 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 160 [2021-02-23 22:57:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:23,654 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2021-02-23 22:57:23,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-23 22:57:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2021-02-23 22:57:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 22:57:23,656 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:23,656 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 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] [2021-02-23 22:57:23,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 22:57:23,656 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:23,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:23,657 INFO L82 PathProgramCache]: Analyzing trace with hash 509822234, now seen corresponding path program 18 times [2021-02-23 22:57:23,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:23,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811219041] [2021-02-23 22:57:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:23,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:23,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:23,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-02-23 22:57:24,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811219041] [2021-02-23 22:57:24,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:24,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-02-23 22:57:24,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708376541] [2021-02-23 22:57:24,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 22:57:24,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:24,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 22:57:24,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2021-02-23 22:57:24,815 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 24 states. [2021-02-23 22:57:27,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:27,012 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2021-02-23 22:57:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-23 22:57:27,013 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 168 [2021-02-23 22:57:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:27,015 INFO L225 Difference]: With dead ends: 127 [2021-02-23 22:57:27,015 INFO L226 Difference]: Without dead ends: 121 [2021-02-23 22:57:27,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=680, Invalid=1300, Unknown=0, NotChecked=0, Total=1980 [2021-02-23 22:57:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-23 22:57:27,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-02-23 22:57:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-02-23 22:57:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2021-02-23 22:57:27,033 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 168 [2021-02-23 22:57:27,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:27,033 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2021-02-23 22:57:27,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 22:57:27,033 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2021-02-23 22:57:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 22:57:27,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:27,035 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 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] [2021-02-23 22:57:27,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 22:57:27,035 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:27,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1058589648, now seen corresponding path program 19 times [2021-02-23 22:57:27,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:27,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224361992] [2021-02-23 22:57:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:27,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:27,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:27,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2021-02-23 22:57:28,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224361992] [2021-02-23 22:57:28,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:28,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-02-23 22:57:28,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563791697] [2021-02-23 22:57:28,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 22:57:28,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:28,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 22:57:28,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2021-02-23 22:57:28,363 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 25 states. [2021-02-23 22:57:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:30,555 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2021-02-23 22:57:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 22:57:30,556 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 176 [2021-02-23 22:57:30,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:30,558 INFO L225 Difference]: With dead ends: 132 [2021-02-23 22:57:30,558 INFO L226 Difference]: Without dead ends: 126 [2021-02-23 22:57:30,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=745, Invalid=1417, Unknown=0, NotChecked=0, Total=2162 [2021-02-23 22:57:30,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-02-23 22:57:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-02-23 22:57:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-02-23 22:57:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2021-02-23 22:57:30,575 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 176 [2021-02-23 22:57:30,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:30,576 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2021-02-23 22:57:30,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 22:57:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2021-02-23 22:57:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-02-23 22:57:30,577 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:30,578 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 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] [2021-02-23 22:57:30,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 22:57:30,578 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash 844531930, now seen corresponding path program 20 times [2021-02-23 22:57:30,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:30,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054989735] [2021-02-23 22:57:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,666 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-23 22:57:30,667 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-23 22:57:30,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:33,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:33,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:33,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:33,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:33,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2021-02-23 22:57:34,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054989735] [2021-02-23 22:57:34,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:34,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-02-23 22:57:34,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798801199] [2021-02-23 22:57:34,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-02-23 22:57:34,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:34,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-02-23 22:57:34,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2021-02-23 22:57:34,280 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 46 states. [2021-02-23 22:57:47,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:47,436 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2021-02-23 22:57:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-02-23 22:57:47,438 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 184 [2021-02-23 22:57:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:47,440 INFO L225 Difference]: With dead ends: 137 [2021-02-23 22:57:47,440 INFO L226 Difference]: Without dead ends: 131 [2021-02-23 22:57:47,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=408, Invalid=11582, Unknown=0, NotChecked=0, Total=11990 [2021-02-23 22:57:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-02-23 22:57:47,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-02-23 22:57:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-02-23 22:57:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2021-02-23 22:57:47,463 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 184 [2021-02-23 22:57:47,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:47,464 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2021-02-23 22:57:47,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-02-23 22:57:47,464 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2021-02-23 22:57:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-02-23 22:57:47,465 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:47,466 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 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 22:57:47,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-23 22:57:47,466 INFO L428 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:47,466 INFO L82 PathProgramCache]: Analyzing trace with hash -260905968, now seen corresponding path program 21 times [2021-02-23 22:57:47,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:47,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139421164] [2021-02-23 22:57:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:47,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:47,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:47,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:47,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:47,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:47,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:48,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:48,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 1050 proven. 42 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-02-23 22:57:48,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139421164] [2021-02-23 22:57:48,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:48,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-02-23 22:57:48,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290737854] [2021-02-23 22:57:48,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-23 22:57:48,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:48,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-23 22:57:48,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=441, Unknown=0, NotChecked=0, Total=702 [2021-02-23 22:57:48,900 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 27 states. [2021-02-23 22:57:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:52,005 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2021-02-23 22:57:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-23 22:57:52,014 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 192 [2021-02-23 22:57:52,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:52,016 INFO L225 Difference]: With dead ends: 131 [2021-02-23 22:57:52,016 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 22:57:52,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=821, Invalid=1729, Unknown=0, NotChecked=0, Total=2550 [2021-02-23 22:57:52,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 22:57:52,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 22:57:52,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 22:57:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 22:57:52,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 192 [2021-02-23 22:57:52,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:52,019 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 22:57:52,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-23 22:57:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 22:57:52,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 22:57:52,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-23 22:57:52,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 22:57:52,259 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 102 [2021-02-23 22:57:52,478 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 102 [2021-02-23 22:57:52,657 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 98 [2021-02-23 22:57:52,813 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 98 [2021-02-23 22:57:53,000 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 102 [2021-02-23 22:57:55,333 WARN L202 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 175 DAG size of output: 134 [2021-02-23 22:57:57,345 WARN L202 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 175 DAG size of output: 131 [2021-02-23 22:57:59,763 WARN L202 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 170 DAG size of output: 130 [2021-02-23 22:58:01,910 WARN L202 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 170 DAG size of output: 130 [2021-02-23 22:58:03,963 WARN L202 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 211 DAG size of output: 168 [2021-02-23 22:58:03,975 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-23 22:58:03,975 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-23 22:58:03,976 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-23 22:58:03,976 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-23 22:58:03,976 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-23 22:58:03,977 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 22:58:03,977 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 22:58:03,977 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-23 22:58:03,977 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 22:58:03,977 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-23 22:58:03,977 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-23 22:58:03,977 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-23 22:58:03,977 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 22:58:03,978 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 22:58:03,978 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 22:58:03,978 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 22:58:03,978 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 22:58:03,978 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2021-02-23 22:58:03,978 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2021-02-23 22:58:03,978 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 11 17) the Hoare annotation is: (<= 20 main_~input~0) [2021-02-23 22:58:03,978 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: false [2021-02-23 22:58:03,978 INFO L185 CegarLoopUtils]: At program point L14(lines 14 16) the Hoare annotation is: (and (<= 20 main_~input~0) (< 19 main_~result~0) (<= main_~result~0 20)) [2021-02-23 22:58:03,978 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: false [2021-02-23 22:58:03,979 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (<= main_~input~0 20) (<= 20 main_~input~0)) [2021-02-23 22:58:03,979 INFO L185 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: (and (<= 20 main_~input~0) (<= |main_#t~ret8| 20) (<= 20 |main_#t~ret8|)) [2021-02-23 22:58:03,979 INFO L185 CegarLoopUtils]: At program point L14-2(lines 11 17) the Hoare annotation is: (<= 20 main_~input~0) [2021-02-23 22:58:03,979 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (and (<= 20 main_~input~0) (<= |main_#t~ret8| 20) (<= 20 |main_#t~ret8|)) [2021-02-23 22:58:03,979 INFO L185 CegarLoopUtils]: At program point L13-3(line 13) the Hoare annotation is: (and (<= 20 main_~input~0) (<= |main_#t~ret8| 20) (<= 20 |main_#t~ret8|) (< 19 main_~result~0) (<= main_~result~0 20)) [2021-02-23 22:58:03,980 INFO L185 CegarLoopUtils]: At program point idFINAL(lines 6 9) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 7 |id_#res|) .cse0 (<= |id_#res| 7) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= |id_#in~x| 11) (<= 11 |id_#in~x|) .cse0 (<= |id_#res| 11) (<= 11 |id_#res|)) (and .cse0 (<= |id_#in~x| 10) (<= 10 |id_#in~x|) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= |id_#res| 16) .cse0 (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 16 |id_#res|)) (and (<= 15 |id_#res|) (<= 15 |id_#in~x|) .cse0 (<= |id_#in~x| 15) (<= |id_#res| 15)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= |id_#res| 5)) (and (<= 2 |id_#res|) .cse0 (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= |id_#res| 17) (<= 17 |id_#res|) .cse0 (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= 9 |id_#res|) .cse0 (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 9 |id_#in~x|)) (and .cse0 (<= 20 |id_#res|) (<= |id_#res| 20) (<= 20 |id_#in~x|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) .cse0 (<= |id_#res| 13) (<= 13 |id_#res|)) (and (<= |id_#res| 14) (<= 14 |id_#in~x|) .cse0 (<= 14 |id_#res|) (<= |id_#in~x| 14)) (and (<= 12 |id_#in~x|) .cse0 (<= |id_#res| 12) (<= |id_#in~x| 12) (<= 12 |id_#res|)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and .cse0 (= |id_#res| 0) (= |id_#in~x| 0)) (and (<= |id_#res| 6) .cse0 (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= |id_#res| 8) .cse0 (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) (and (<= 19 |id_#res|) (<= |id_#res| 19) .cse0 (<= |id_#in~x| 19) (<= 19 |id_#in~x|)) (and (<= 21 |id_#in~x|) .cse0) (and (<= |id_#res| 18) (<= 18 |id_#in~x|) .cse0 (<= 18 |id_#res|) (<= |id_#in~x| 18)))) [2021-02-23 22:58:03,981 INFO L185 CegarLoopUtils]: At program point idEXIT(lines 6 9) the Hoare annotation is: (and (or (and (<= |id_#res| 14) (<= 14 |id_#in~x|) (<= 14 |id_#res|) (<= |id_#in~x| 14)) (and (<= 2 |id_#res|) (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#res| 4) (<= 4 |id_#res|) (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (= |id_#res| 0) (= |id_#in~x| 0)) (and (<= |id_#res| 18) (<= 18 |id_#in~x|) (<= 18 |id_#res|) (<= |id_#in~x| 18)) (and (<= |id_#in~x| 10) (<= 10 |id_#in~x|) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= |id_#res| 16) (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 16 |id_#res|)) (and (<= |id_#res| 17) (<= 17 |id_#res|) (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= 1 |id_#in~x|) (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= 7 |id_#res|) (<= |id_#res| 7) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= |id_#res| 8) (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) (and (<= 12 |id_#in~x|) (<= |id_#res| 12) (<= |id_#in~x| 12) (<= 12 |id_#res|)) (and (<= 19 |id_#res|) (<= |id_#res| 19) (<= 19 |id_#in~x|)) (and (<= 9 |id_#res|) (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 9 |id_#in~x|)) (<= 20 |id_#in~x|) (and (<= |id_#res| 6) (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) (<= |id_#res| 5)) (and (<= |id_#in~x| 11) (<= 11 |id_#in~x|) (<= |id_#res| 11) (<= 11 |id_#res|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) (<= |id_#res| 13) (<= 13 |id_#res|)) (and (<= 15 |id_#res|) (<= 15 |id_#in~x|) (<= |id_#in~x| 15) (<= |id_#res| 15))) (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= 20 |id_#res|) (<= |id_#res| 20)) (and (<= 21 |id_#in~x|) .cse0) (and .cse0 (<= |id_#in~x| 19))))) [2021-02-23 22:58:03,981 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-23 22:58:03,981 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2021-02-23 22:58:03,981 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-23 22:58:03,982 INFO L185 CegarLoopUtils]: At program point L8-1(line 8) the Hoare annotation is: (and (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= |id_#t~ret7| 19) .cse0 (<= 19 |id_#t~ret7|)) (and (<= 21 |id_#in~x|) .cse0) (and .cse0 (<= |id_#in~x| 19)))) (or (and (<= 14 |id_#in~x|) (<= |id_#t~ret7| 13) (<= 13 |id_#t~ret7|) (<= |id_#in~x| 14)) (and (<= 12 |id_#in~x|) (<= |id_#in~x| 12) (<= |id_#t~ret7| 11) (<= 11 |id_#t~ret7|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) (<= |id_#t~ret7| 12) (<= 12 |id_#t~ret7|)) (and (<= |id_#in~x| 10) (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9)) (and (<= |id_#in~x| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= 5 |id_#in~x|) (<= |id_#in~x| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and (<= 3 |id_#in~x|) (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)) (and (<= 15 |id_#in~x|) (<= |id_#t~ret7| 14) (<= |id_#in~x| 15) (<= 14 |id_#t~ret7|)) (and (<= 5 |id_#t~ret7|) (<= |id_#t~ret7| 5) (<= 6 |id_#in~x|) (<= |id_#in~x| 6)) (and (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= 18 |id_#in~x|) (<= |id_#t~ret7| 17) (<= |id_#in~x| 18) (<= 17 |id_#t~ret7|)) (and (<= |id_#t~ret7| 16) (<= 16 |id_#t~ret7|) (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= |id_#t~ret7| 10) (<= 10 |id_#t~ret7|) (<= |id_#in~x| 11) (<= 11 |id_#in~x|)) (and (<= 1 |id_#in~x|) (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 15 |id_#t~ret7|) (<= |id_#t~ret7| 15)) (and (<= |id_#t~ret7| 6) (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (<= 20 |id_#in~x|) (and (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and (<= 18 |id_#t~ret7|) (<= |id_#t~ret7| 18) (<= 19 |id_#in~x|)))) [2021-02-23 22:58:03,982 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (and (= |id_#in~x| id_~x) (= |id_#in~x| 0)) [2021-02-23 22:58:03,982 INFO L185 CegarLoopUtils]: At program point L8-2(line 8) the Hoare annotation is: (and (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= |id_#t~ret7| 19) .cse0 (<= 19 |id_#t~ret7|)) (and (<= 21 |id_#in~x|) .cse0) (and .cse0 (<= |id_#in~x| 19)))) (or (and (<= 14 |id_#in~x|) (<= |id_#t~ret7| 13) (<= 13 |id_#t~ret7|) (<= |id_#in~x| 14)) (and (<= 12 |id_#in~x|) (<= |id_#in~x| 12) (<= |id_#t~ret7| 11) (<= 11 |id_#t~ret7|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) (<= |id_#t~ret7| 12) (<= 12 |id_#t~ret7|)) (and (<= |id_#in~x| 10) (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9)) (and (<= |id_#in~x| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= 5 |id_#in~x|) (<= |id_#in~x| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and (<= 3 |id_#in~x|) (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)) (and (<= 15 |id_#in~x|) (<= |id_#t~ret7| 14) (<= |id_#in~x| 15) (<= 14 |id_#t~ret7|)) (and (<= 5 |id_#t~ret7|) (<= |id_#t~ret7| 5) (<= 6 |id_#in~x|) (<= |id_#in~x| 6)) (and (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= 18 |id_#in~x|) (<= |id_#t~ret7| 17) (<= |id_#in~x| 18) (<= 17 |id_#t~ret7|)) (and (<= |id_#t~ret7| 16) (<= 16 |id_#t~ret7|) (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= |id_#t~ret7| 10) (<= 10 |id_#t~ret7|) (<= |id_#in~x| 11) (<= 11 |id_#in~x|)) (and (<= 1 |id_#in~x|) (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 15 |id_#t~ret7|) (<= |id_#t~ret7| 15)) (and (<= |id_#t~ret7| 6) (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (<= 20 |id_#in~x|) (and (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and (<= 18 |id_#t~ret7|) (<= |id_#t~ret7| 18) (<= 19 |id_#in~x|)))) [2021-02-23 22:58:03,983 INFO L185 CegarLoopUtils]: At program point L8-3(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (= |id_#t~ret7| 0) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= 15 |id_#res|) (<= 15 |id_#in~x|) (<= |id_#t~ret7| 14) .cse0 (<= |id_#in~x| 15) (<= 14 |id_#t~ret7|) (<= |id_#res| 15)) (and (<= |id_#res| 8) .cse0 (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 8 |id_#res|) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret7| 6) (<= 7 |id_#res|) .cse0 (<= |id_#res| 7) (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#t~ret7| 19) .cse0 (<= 20 |id_#res|) (<= |id_#res| 20) (<= 20 |id_#in~x|) (<= 19 |id_#t~ret7|)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and (<= 9 |id_#res|) .cse0 (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= |id_#res| 17) (<= 17 |id_#res|) .cse0 (<= |id_#t~ret7| 16) (<= 16 |id_#t~ret7|) (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) (<= |id_#t~ret7| 12) .cse0 (<= |id_#res| 13) (<= 13 |id_#res|) (<= 12 |id_#t~ret7|)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and .cse0 (<= |id_#in~x| 10) (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= 12 |id_#in~x|) .cse0 (<= |id_#res| 12) (<= |id_#in~x| 12) (<= 12 |id_#res|) (<= |id_#t~ret7| 11) (<= 11 |id_#t~ret7|)) (and (<= |id_#res| 14) (<= 14 |id_#in~x|) (<= |id_#t~ret7| 13) .cse0 (<= 13 |id_#t~ret7|) (<= 14 |id_#res|) (<= |id_#in~x| 14)) (and (<= |id_#res| 16) .cse0 (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 16 |id_#res|) (<= 15 |id_#t~ret7|) (<= |id_#t~ret7| 15)) (and (<= |id_#res| 18) (<= 18 |id_#in~x|) (<= |id_#t~ret7| 17) .cse0 (<= 18 |id_#res|) (<= |id_#in~x| 18) (<= 17 |id_#t~ret7|)) (and (<= 19 |id_#res|) (<= |id_#res| 19) .cse0 (<= 18 |id_#t~ret7|) (<= |id_#in~x| 19) (<= |id_#t~ret7| 18) (<= 19 |id_#in~x|)) (and (<= 21 |id_#in~x|) .cse0) (and (<= 2 |id_#res|) .cse0 (<= |id_#t~ret7| 1) (<= |id_#res| 2) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#t~ret7| 10) (<= 10 |id_#t~ret7|) (<= |id_#in~x| 11) (<= 11 |id_#in~x|) .cse0 (<= |id_#res| 11) (<= 11 |id_#res|)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= |id_#res| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and (<= 5 |id_#t~ret7|) (<= |id_#res| 6) (<= |id_#t~ret7| 5) .cse0 (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)))) [2021-02-23 22:58:04,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:58:04 BoogieIcfgContainer [2021-02-23 22:58:04,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:58:04,007 INFO L168 Benchmark]: Toolchain (without parser) took 72326.21 ms. Allocated memory was 151.0 MB in the beginning and 404.8 MB in the end (delta: 253.8 MB). Free memory was 127.4 MB in the beginning and 186.6 MB in the end (delta: -59.2 MB). Peak memory consumption was 238.2 MB. Max. memory is 8.0 GB. [2021-02-23 22:58:04,008 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:58:04,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.88 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:58:04,008 INFO L168 Benchmark]: Boogie Preprocessor took 34.23 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:58:04,008 INFO L168 Benchmark]: RCFGBuilder took 416.52 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 134.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2021-02-23 22:58:04,008 INFO L168 Benchmark]: TraceAbstraction took 71535.54 ms. Allocated memory was 151.0 MB in the beginning and 404.8 MB in the end (delta: 253.8 MB). Free memory was 133.8 MB in the beginning and 186.6 MB in the end (delta: -52.8 MB). Peak memory consumption was 244.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:58:04,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 307.88 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.23 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 416.52 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 134.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 71535.54 ms. Allocated memory was 151.0 MB in the beginning and 404.8 MB in the end (delta: 253.8 MB). Free memory was 133.8 MB in the beginning and 186.6 MB in the end (delta: -52.8 MB). Peak memory consumption was 244.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 20 <= input - ProcedureContractResult [Line: 6]: Procedure Contract for id Derived contract for procedure id: (((((((((((((((((((((((\result <= 14 && 14 <= \old(x)) && 14 <= \result) && \old(x) <= 14) || (((2 <= \result && \result <= 2) && 2 <= \old(x)) && \old(x) <= 2)) || (((\result <= 4 && 4 <= \result) && \old(x) <= 4) && 4 <= \old(x))) || (\result == 0 && \old(x) == 0)) || (((\result <= 18 && 18 <= \old(x)) && 18 <= \result) && \old(x) <= 18)) || (((\old(x) <= 10 && 10 <= \old(x)) && 10 <= \result) && \result <= 10)) || (((\result <= 16 && 16 <= \old(x)) && \old(x) <= 16) && 16 <= \result)) || (((\result <= 17 && 17 <= \result) && \old(x) <= 17) && 17 <= \old(x))) || (((1 <= \old(x) && \result <= 1) && 1 <= \result) && \old(x) <= 1)) || (((7 <= \result && \result <= 7) && 7 <= \old(x)) && \old(x) <= 7)) || (((\result <= 3 && 3 <= \old(x)) && \old(x) <= 3) && 3 <= \result)) || (((\result <= 8 && 8 <= \old(x)) && 8 <= \result) && \old(x) <= 8)) || (((12 <= \old(x) && \result <= 12) && \old(x) <= 12) && 12 <= \result)) || ((19 <= \result && \result <= 19) && 19 <= \old(x))) || (((9 <= \result && \old(x) <= 9) && \result <= 9) && 9 <= \old(x))) || 20 <= \old(x)) || (((\result <= 6 && 6 <= \old(x)) && 6 <= \result) && \old(x) <= 6)) || (((5 <= \result && 5 <= \old(x)) && \old(x) <= 5) && \result <= 5)) || (((\old(x) <= 11 && 11 <= \old(x)) && \result <= 11) && 11 <= \result)) || (((13 <= \old(x) && \old(x) <= 13) && \result <= 13) && 13 <= \result)) || (((15 <= \result && 15 <= \old(x)) && \old(x) <= 15) && \result <= 15)) && ((((\old(x) == x && 20 <= \result) && \result <= 20) || (21 <= \old(x) && \old(x) == x)) || (\old(x) == x && \old(x) <= 19)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 59.4s, OverallIterations: 22, TraceHistogramMax: 22, AutomataDifference: 40.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 11.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 689 SDtfs, 2259 SDslu, 1872 SDs, 0 SdLazy, 7548 SolverSat, 629 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1228 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 677 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5139 ImplicationChecksByTransitivity, 34.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred 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, 22 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 43 PreInvPairs, 452 NumberOfFragments, 1721 HoareAnnotationTreeSize, 43 FomulaSimplifications, 8966 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 34 FomulaSimplificationsInter, 7720 FormulaSimplificationTreeSizeReductionInter, 10.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 2376 NumberOfCodeBlocks, 2376 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2354 ConstructedInterpolants, 0 QuantifiedInterpolants, 908314 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 1 PerfectInterpolantSequences, 6132/13244 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 correct! Received shutdown request...