/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_o200.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:08:05,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:08:05,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:08:05,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:08:05,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:08:05,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:08:05,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:08:05,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:08:05,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:08:05,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:08:05,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:08:05,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:08:05,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:08:05,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:08:05,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:08:05,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:08:05,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:08:05,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:08:05,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:08:05,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:08:05,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:08:05,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:08:05,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:08:05,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:08:05,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:08:05,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:08:05,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:08:05,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:08:05,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:08:05,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:08:05,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:08:05,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:08:05,355 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:08:05,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:08:05,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:08:05,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:08:05,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:08:05,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:08:05,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:08:05,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:08:05,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:08:05,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:08:05,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:08:05,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:08:05,357 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:08:05,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:08:05,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:08:05,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:08:05,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:08:05,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:08:05,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:08:05,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:08:05,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:08:05,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:08:05,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:08:05,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:08:05,800 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:08:05,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o200.c [2020-11-07 05:08:05,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03a1a526/b7a3f93ba8c048b2b3ac808886e4565d/FLAG34f791fa0 [2020-11-07 05:08:06,493 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:08:06,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o200.c [2020-11-07 05:08:06,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03a1a526/b7a3f93ba8c048b2b3ac808886e4565d/FLAG34f791fa0 [2020-11-07 05:08:06,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03a1a526/b7a3f93ba8c048b2b3ac808886e4565d [2020-11-07 05:08:06,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:08:06,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:08:06,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:08:06,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:08:06,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:08:06,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:08:06" (1/1) ... [2020-11-07 05:08:06,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc7be10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:06, skipping insertion in model container [2020-11-07 05:08:06,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:08:06" (1/1) ... [2020-11-07 05:08:06,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:08:06,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:08:07,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:08:07,106 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:08:07,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:08:07,135 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:08:07,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:07 WrapperNode [2020-11-07 05:08:07,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:08:07,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:08:07,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:08:07,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:08:07,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:07" (1/1) ... [2020-11-07 05:08:07,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:07" (1/1) ... [2020-11-07 05:08:07,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:07" (1/1) ... [2020-11-07 05:08:07,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:07" (1/1) ... [2020-11-07 05:08:07,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:07" (1/1) ... [2020-11-07 05:08:07,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:07" (1/1) ... [2020-11-07 05:08:07,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:07" (1/1) ... [2020-11-07 05:08:07,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:08:07,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:08:07,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:08:07,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:08:07,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:08:07,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:08:07,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:08:07,254 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:08:07,254 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-07 05:08:07,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:08:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 05:08:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:08:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:08:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:08:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:08:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-07 05:08:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:08:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:08:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:08:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:08:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:08:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:08:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:08:07,732 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:08:07,733 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 05:08:07,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:08:07 BoogieIcfgContainer [2020-11-07 05:08:07,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:08:07,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:08:07,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:08:07,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:08:07,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:08:06" (1/3) ... [2020-11-07 05:08:07,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acba4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:08:07, skipping insertion in model container [2020-11-07 05:08:07,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:07" (2/3) ... [2020-11-07 05:08:07,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acba4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:08:07, skipping insertion in model container [2020-11-07 05:08:07,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:08:07" (3/3) ... [2020-11-07 05:08:07,749 INFO L111 eAbstractionObserver]: Analyzing ICFG id_o200.c [2020-11-07 05:08:07,767 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:08:07,771 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:08:07,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:08:07,831 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:08:07,831 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:08:07,831 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:08:07,831 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:08:07,831 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:08:07,832 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:08:07,832 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:08:07,832 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:08:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-11-07 05:08:07,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 05:08:07,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:07,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:07,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:07,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:07,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2039876327, now seen corresponding path program 1 times [2020-11-07 05:08:07,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:07,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710355116] [2020-11-07 05:08:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:08,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:08,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:08:08,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710355116] [2020-11-07 05:08:08,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:08:08,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:08:08,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699517027] [2020-11-07 05:08:08,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:08:08,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:08,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:08:08,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:08:08,418 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-11-07 05:08:08,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:08,751 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-11-07 05:08:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:08:08,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-07 05:08:08,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:08,763 INFO L225 Difference]: With dead ends: 50 [2020-11-07 05:08:08,764 INFO L226 Difference]: Without dead ends: 31 [2020-11-07 05:08:08,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:08:08,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-07 05:08:08,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-07 05:08:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-07 05:08:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-07 05:08:08,823 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2020-11-07 05:08:08,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:08,824 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-07 05:08:08,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:08:08,824 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-07 05:08:08,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 05:08:08,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:08,827 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] [2020-11-07 05:08:08,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:08:08,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:08,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1789799325, now seen corresponding path program 1 times [2020-11-07 05:08:08,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:08,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893817197] [2020-11-07 05:08:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:08,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:08,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 05:08:09,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893817197] [2020-11-07 05:08:09,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:09,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:08:09,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704659952] [2020-11-07 05:08:09,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:08:09,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:09,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:08:09,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:08:09,092 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 8 states. [2020-11-07 05:08:09,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:09,508 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-11-07 05:08:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:08:09,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-11-07 05:08:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:09,511 INFO L225 Difference]: With dead ends: 41 [2020-11-07 05:08:09,511 INFO L226 Difference]: Without dead ends: 35 [2020-11-07 05:08:09,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-11-07 05:08:09,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-07 05:08:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-07 05:08:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-07 05:08:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-11-07 05:08:09,526 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2020-11-07 05:08:09,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:09,526 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-11-07 05:08:09,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:08:09,527 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-11-07 05:08:09,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 05:08:09,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:09,529 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:09,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:08:09,529 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:09,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:09,530 INFO L82 PathProgramCache]: Analyzing trace with hash 819538851, now seen corresponding path program 2 times [2020-11-07 05:08:09,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:09,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104606195] [2020-11-07 05:08:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-07 05:08:09,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104606195] [2020-11-07 05:08:09,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:09,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:08:09,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641056411] [2020-11-07 05:08:09,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:08:09,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:09,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:08:09,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:08:09,823 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2020-11-07 05:08:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:10,402 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-11-07 05:08:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 05:08:10,403 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-11-07 05:08:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:10,404 INFO L225 Difference]: With dead ends: 45 [2020-11-07 05:08:10,405 INFO L226 Difference]: Without dead ends: 39 [2020-11-07 05:08:10,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-11-07 05:08:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-07 05:08:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-07 05:08:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-07 05:08:10,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-07 05:08:10,419 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 39 [2020-11-07 05:08:10,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:10,419 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-07 05:08:10,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:08:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-07 05:08:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-07 05:08:10,421 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:10,421 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:10,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:08:10,422 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:10,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:10,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1214666029, now seen corresponding path program 3 times [2020-11-07 05:08:10,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:10,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279641273] [2020-11-07 05:08:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:10,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:10,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:10,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:10,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-07 05:08:10,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279641273] [2020-11-07 05:08:10,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:10,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 05:08:10,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246953462] [2020-11-07 05:08:10,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 05:08:10,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:10,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 05:08:10,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:08:10,817 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 12 states. [2020-11-07 05:08:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:11,738 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-11-07 05:08:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 05:08:11,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-11-07 05:08:11,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:11,746 INFO L225 Difference]: With dead ends: 49 [2020-11-07 05:08:11,746 INFO L226 Difference]: Without dead ends: 43 [2020-11-07 05:08:11,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-11-07 05:08:11,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-07 05:08:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-07 05:08:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-07 05:08:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-11-07 05:08:11,775 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 46 [2020-11-07 05:08:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:11,778 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-11-07 05:08:11,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 05:08:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-11-07 05:08:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-07 05:08:11,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:11,780 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:11,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:08:11,786 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:11,787 INFO L82 PathProgramCache]: Analyzing trace with hash -461443027, now seen corresponding path program 4 times [2020-11-07 05:08:11,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:11,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441382509] [2020-11-07 05:08:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:11,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:11,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-07 05:08:12,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441382509] [2020-11-07 05:08:12,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:12,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-07 05:08:12,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704084074] [2020-11-07 05:08:12,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 05:08:12,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:12,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 05:08:12,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-11-07 05:08:12,245 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 14 states. [2020-11-07 05:08:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:13,386 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2020-11-07 05:08:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 05:08:13,388 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-11-07 05:08:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:13,390 INFO L225 Difference]: With dead ends: 53 [2020-11-07 05:08:13,390 INFO L226 Difference]: Without dead ends: 47 [2020-11-07 05:08:13,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2020-11-07 05:08:13,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-07 05:08:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-07 05:08:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-07 05:08:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-11-07 05:08:13,403 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 53 [2020-11-07 05:08:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:13,404 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-11-07 05:08:13,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 05:08:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-11-07 05:08:13,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-07 05:08:13,406 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:13,406 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:13,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:08:13,406 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:13,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:13,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1951577079, now seen corresponding path program 5 times [2020-11-07 05:08:13,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:13,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653757469] [2020-11-07 05:08:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,823 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-07 05:08:13,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653757469] [2020-11-07 05:08:13,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:13,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-07 05:08:13,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697233505] [2020-11-07 05:08:13,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 05:08:13,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:13,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 05:08:13,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:08:13,827 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 16 states. [2020-11-07 05:08:15,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:15,119 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-11-07 05:08:15,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 05:08:15,120 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-11-07 05:08:15,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:15,121 INFO L225 Difference]: With dead ends: 57 [2020-11-07 05:08:15,121 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 05:08:15,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 05:08:15,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 05:08:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-07 05:08:15,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-07 05:08:15,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-11-07 05:08:15,143 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 60 [2020-11-07 05:08:15,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:15,144 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-11-07 05:08:15,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 05:08:15,144 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-11-07 05:08:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-07 05:08:15,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:15,146 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:15,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:08:15,146 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:15,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1085586761, now seen corresponding path program 6 times [2020-11-07 05:08:15,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:15,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063482191] [2020-11-07 05:08:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-07 05:08:15,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063482191] [2020-11-07 05:08:15,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:15,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-11-07 05:08:15,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946086942] [2020-11-07 05:08:15,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 05:08:15,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:15,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 05:08:15,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:08:15,628 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 18 states. [2020-11-07 05:08:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:17,345 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-11-07 05:08:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-07 05:08:17,345 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 67 [2020-11-07 05:08:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:17,347 INFO L225 Difference]: With dead ends: 61 [2020-11-07 05:08:17,348 INFO L226 Difference]: Without dead ends: 55 [2020-11-07 05:08:17,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 05:08:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-07 05:08:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-07 05:08:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-07 05:08:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-11-07 05:08:17,378 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 67 [2020-11-07 05:08:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:17,378 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-11-07 05:08:17,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 05:08:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-11-07 05:08:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-07 05:08:17,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:17,383 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:17,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:08:17,384 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:17,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:17,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1506086719, now seen corresponding path program 7 times [2020-11-07 05:08:17,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:17,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691577242] [2020-11-07 05:08:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:17,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:17,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:17,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:17,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:17,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:17,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:17,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-07 05:08:18,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691577242] [2020-11-07 05:08:18,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:18,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-11-07 05:08:18,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61445273] [2020-11-07 05:08:18,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-07 05:08:18,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:18,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-07 05:08:18,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-11-07 05:08:18,021 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 20 states. [2020-11-07 05:08:20,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:20,032 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2020-11-07 05:08:20,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-07 05:08:20,032 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2020-11-07 05:08:20,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:20,035 INFO L225 Difference]: With dead ends: 65 [2020-11-07 05:08:20,035 INFO L226 Difference]: Without dead ends: 59 [2020-11-07 05:08:20,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=161, Invalid=1819, Unknown=0, NotChecked=0, Total=1980 [2020-11-07 05:08:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-07 05:08:20,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-07 05:08:20,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-07 05:08:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-11-07 05:08:20,050 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 74 [2020-11-07 05:08:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:20,051 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-11-07 05:08:20,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-07 05:08:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-11-07 05:08:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-07 05:08:20,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:20,053 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:20,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:08:20,053 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:20,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:20,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1924014913, now seen corresponding path program 8 times [2020-11-07 05:08:20,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:20,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340993057] [2020-11-07 05:08:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-07 05:08:20,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340993057] [2020-11-07 05:08:20,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:20,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-11-07 05:08:20,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571241413] [2020-11-07 05:08:20,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-07 05:08:20,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:20,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-07 05:08:20,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-11-07 05:08:20,780 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 22 states. [2020-11-07 05:08:22,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:22,974 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-11-07 05:08:22,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-07 05:08:22,975 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 81 [2020-11-07 05:08:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:22,977 INFO L225 Difference]: With dead ends: 69 [2020-11-07 05:08:22,978 INFO L226 Difference]: Without dead ends: 63 [2020-11-07 05:08:22,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=180, Invalid=2270, Unknown=0, NotChecked=0, Total=2450 [2020-11-07 05:08:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-07 05:08:22,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-07 05:08:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-07 05:08:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-11-07 05:08:22,993 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 81 [2020-11-07 05:08:22,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:22,994 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-11-07 05:08:22,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-07 05:08:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-11-07 05:08:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-07 05:08:22,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:22,996 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:22,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:08:22,996 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:22,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:22,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1815934069, now seen corresponding path program 9 times [2020-11-07 05:08:22,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:22,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482817815] [2020-11-07 05:08:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-07 05:08:23,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482817815] [2020-11-07 05:08:23,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:23,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-11-07 05:08:23,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465112076] [2020-11-07 05:08:23,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-07 05:08:23,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:23,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-07 05:08:23,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-11-07 05:08:23,805 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 24 states. [2020-11-07 05:08:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:26,491 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-11-07 05:08:26,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-07 05:08:26,492 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 88 [2020-11-07 05:08:26,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:26,494 INFO L225 Difference]: With dead ends: 73 [2020-11-07 05:08:26,494 INFO L226 Difference]: Without dead ends: 67 [2020-11-07 05:08:26,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=199, Invalid=2771, Unknown=0, NotChecked=0, Total=2970 [2020-11-07 05:08:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-07 05:08:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-11-07 05:08:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-07 05:08:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-11-07 05:08:26,509 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 88 [2020-11-07 05:08:26,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:26,510 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-11-07 05:08:26,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-07 05:08:26,510 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-11-07 05:08:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-07 05:08:26,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:26,512 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:26,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:08:26,512 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:26,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:26,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1550347829, now seen corresponding path program 10 times [2020-11-07 05:08:26,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:26,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095990018] [2020-11-07 05:08:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:26,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:26,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:26,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:26,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-07 05:08:27,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095990018] [2020-11-07 05:08:27,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:27,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-11-07 05:08:27,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878383983] [2020-11-07 05:08:27,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-07 05:08:27,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:27,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-07 05:08:27,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-11-07 05:08:27,504 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 26 states. [2020-11-07 05:08:30,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:30,479 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2020-11-07 05:08:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-07 05:08:30,480 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 95 [2020-11-07 05:08:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:30,482 INFO L225 Difference]: With dead ends: 77 [2020-11-07 05:08:30,482 INFO L226 Difference]: Without dead ends: 71 [2020-11-07 05:08:30,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=218, Invalid=3322, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 05:08:30,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-07 05:08:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-07 05:08:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-07 05:08:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-11-07 05:08:30,497 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 95 [2020-11-07 05:08:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:30,498 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-11-07 05:08:30,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-07 05:08:30,498 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-11-07 05:08:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-07 05:08:30,499 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:30,499 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:30,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 05:08:30,500 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:30,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1156643755, now seen corresponding path program 11 times [2020-11-07 05:08:30,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:30,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927298287] [2020-11-07 05:08:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:30,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:30,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:30,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:30,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:31,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:31,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:31,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-11-07 05:08:31,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927298287] [2020-11-07 05:08:31,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:31,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-11-07 05:08:31,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361315565] [2020-11-07 05:08:31,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-07 05:08:31,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:31,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-07 05:08:31,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-11-07 05:08:31,513 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 28 states. [2020-11-07 05:08:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:34,921 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-11-07 05:08:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-07 05:08:34,922 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 102 [2020-11-07 05:08:34,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:34,924 INFO L225 Difference]: With dead ends: 81 [2020-11-07 05:08:34,924 INFO L226 Difference]: Without dead ends: 75 [2020-11-07 05:08:34,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=237, Invalid=3923, Unknown=0, NotChecked=0, Total=4160 [2020-11-07 05:08:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-07 05:08:34,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-07 05:08:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-07 05:08:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-11-07 05:08:34,941 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 102 [2020-11-07 05:08:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:34,941 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-11-07 05:08:34,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-07 05:08:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-11-07 05:08:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-07 05:08:34,943 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:34,943 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:34,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 05:08:34,943 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:34,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:34,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1249349205, now seen corresponding path program 12 times [2020-11-07 05:08:34,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:34,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30663384] [2020-11-07 05:08:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:35,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-11-07 05:08:36,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30663384] [2020-11-07 05:08:36,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:36,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-11-07 05:08:36,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805207157] [2020-11-07 05:08:36,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-07 05:08:36,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:36,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-07 05:08:36,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-11-07 05:08:36,080 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 30 states. [2020-11-07 05:08:40,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:40,037 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-11-07 05:08:40,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-07 05:08:40,038 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 109 [2020-11-07 05:08:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:40,040 INFO L225 Difference]: With dead ends: 85 [2020-11-07 05:08:40,040 INFO L226 Difference]: Without dead ends: 79 [2020-11-07 05:08:40,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=256, Invalid=4574, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 05:08:40,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-07 05:08:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-11-07 05:08:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-07 05:08:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-11-07 05:08:40,058 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 109 [2020-11-07 05:08:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:40,058 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-11-07 05:08:40,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-07 05:08:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-11-07 05:08:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-07 05:08:40,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:40,060 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:40,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 05:08:40,060 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:40,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:40,061 INFO L82 PathProgramCache]: Analyzing trace with hash 46324511, now seen corresponding path program 13 times [2020-11-07 05:08:40,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:40,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631700281] [2020-11-07 05:08:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:41,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-11-07 05:08:41,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631700281] [2020-11-07 05:08:41,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:41,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-11-07 05:08:41,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308249599] [2020-11-07 05:08:41,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-07 05:08:41,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:41,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-07 05:08:41,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-11-07 05:08:41,318 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 32 states. [2020-11-07 05:08:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:45,680 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2020-11-07 05:08:45,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 05:08:45,681 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 116 [2020-11-07 05:08:45,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:45,683 INFO L225 Difference]: With dead ends: 89 [2020-11-07 05:08:45,683 INFO L226 Difference]: Without dead ends: 83 [2020-11-07 05:08:45,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=275, Invalid=5275, Unknown=0, NotChecked=0, Total=5550 [2020-11-07 05:08:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-07 05:08:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-11-07 05:08:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-07 05:08:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-11-07 05:08:45,707 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 116 [2020-11-07 05:08:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:45,709 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-11-07 05:08:45,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-07 05:08:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-11-07 05:08:45,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-07 05:08:45,711 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:45,711 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:45,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 05:08:45,711 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:45,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:45,712 INFO L82 PathProgramCache]: Analyzing trace with hash 322836703, now seen corresponding path program 14 times [2020-11-07 05:08:45,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:45,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855335018] [2020-11-07 05:08:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-11-07 05:08:47,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855335018] [2020-11-07 05:08:47,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:47,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-11-07 05:08:47,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782803981] [2020-11-07 05:08:47,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-07 05:08:47,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:47,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-07 05:08:47,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 05:08:47,110 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 34 states. [2020-11-07 05:08:51,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:51,988 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2020-11-07 05:08:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-07 05:08:51,989 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 123 [2020-11-07 05:08:51,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:51,991 INFO L225 Difference]: With dead ends: 93 [2020-11-07 05:08:51,991 INFO L226 Difference]: Without dead ends: 87 [2020-11-07 05:08:51,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=294, Invalid=6026, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 05:08:51,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-07 05:08:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-07 05:08:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-07 05:08:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-11-07 05:08:52,005 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 123 [2020-11-07 05:08:52,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:52,006 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-11-07 05:08:52,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-07 05:08:52,006 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-11-07 05:08:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-07 05:08:52,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:52,008 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:52,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 05:08:52,009 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:52,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1510117353, now seen corresponding path program 15 times [2020-11-07 05:08:52,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:52,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085076429] [2020-11-07 05:08:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-11-07 05:08:53,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085076429] [2020-11-07 05:08:53,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:53,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-11-07 05:08:53,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201520621] [2020-11-07 05:08:53,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-07 05:08:53,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:53,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-07 05:08:53,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-11-07 05:08:53,627 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 36 states. [2020-11-07 05:08:58,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:59,000 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2020-11-07 05:08:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-07 05:08:59,001 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 130 [2020-11-07 05:08:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:59,003 INFO L225 Difference]: With dead ends: 97 [2020-11-07 05:08:59,003 INFO L226 Difference]: Without dead ends: 91 [2020-11-07 05:08:59,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=313, Invalid=6827, Unknown=0, NotChecked=0, Total=7140 [2020-11-07 05:08:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-07 05:08:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-11-07 05:08:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 05:08:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-11-07 05:08:59,019 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 130 [2020-11-07 05:08:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:59,020 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-11-07 05:08:59,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-07 05:08:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-11-07 05:08:59,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-07 05:08:59,022 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:59,022 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:59,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 05:08:59,022 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:59,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:59,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1118097047, now seen corresponding path program 16 times [2020-11-07 05:08:59,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:59,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264736717] [2020-11-07 05:08:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:59,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-07 05:09:00,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264736717] [2020-11-07 05:09:00,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:00,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-11-07 05:09:00,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535106403] [2020-11-07 05:09:00,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-07 05:09:00,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:00,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-07 05:09:00,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-11-07 05:09:00,741 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 38 states. [2020-11-07 05:09:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:06,778 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2020-11-07 05:09:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-07 05:09:06,779 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 137 [2020-11-07 05:09:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:06,780 INFO L225 Difference]: With dead ends: 101 [2020-11-07 05:09:06,780 INFO L226 Difference]: Without dead ends: 95 [2020-11-07 05:09:06,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=332, Invalid=7678, Unknown=0, NotChecked=0, Total=8010 [2020-11-07 05:09:06,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-07 05:09:06,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-11-07 05:09:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-07 05:09:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-11-07 05:09:06,805 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 137 [2020-11-07 05:09:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:06,806 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-11-07 05:09:06,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-07 05:09:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-11-07 05:09:06,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-11-07 05:09:06,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:06,809 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:09:06,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 05:09:06,810 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:06,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:06,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1483874995, now seen corresponding path program 17 times [2020-11-07 05:09:06,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:06,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732304874] [2020-11-07 05:09:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:06,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:07,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:08,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:08,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-11-07 05:09:08,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732304874] [2020-11-07 05:09:08,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:08,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-11-07 05:09:08,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401231400] [2020-11-07 05:09:08,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-07 05:09:08,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:08,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-07 05:09:08,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 05:09:08,932 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 40 states. [2020-11-07 05:09:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:15,529 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-11-07 05:09:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-07 05:09:15,536 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 144 [2020-11-07 05:09:15,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:15,537 INFO L225 Difference]: With dead ends: 105 [2020-11-07 05:09:15,537 INFO L226 Difference]: Without dead ends: 99 [2020-11-07 05:09:15,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=351, Invalid=8579, Unknown=0, NotChecked=0, Total=8930 [2020-11-07 05:09:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-07 05:09:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-11-07 05:09:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-07 05:09:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-11-07 05:09:15,552 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 144 [2020-11-07 05:09:15,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:15,552 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-11-07 05:09:15,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-07 05:09:15,553 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-11-07 05:09:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-07 05:09:15,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:15,554 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:09:15,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-07 05:09:15,554 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:15,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2076104691, now seen corresponding path program 18 times [2020-11-07 05:09:15,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:15,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286414470] [2020-11-07 05:09:15,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:15,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:15,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:15,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:15,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:15,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:16,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:16,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:16,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:16,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:16,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:16,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:17,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:17,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:17,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-11-07 05:09:17,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286414470] [2020-11-07 05:09:17,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:17,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-11-07 05:09:17,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312297076] [2020-11-07 05:09:17,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-07 05:09:17,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:17,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-07 05:09:17,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-11-07 05:09:17,664 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 42 states. [2020-11-07 05:09:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:24,867 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2020-11-07 05:09:24,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-07 05:09:24,868 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 151 [2020-11-07 05:09:24,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:24,870 INFO L225 Difference]: With dead ends: 109 [2020-11-07 05:09:24,870 INFO L226 Difference]: Without dead ends: 103 [2020-11-07 05:09:24,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1634 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=370, Invalid=9530, Unknown=0, NotChecked=0, Total=9900 [2020-11-07 05:09:24,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-07 05:09:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-11-07 05:09:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-07 05:09:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-11-07 05:09:24,893 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 151 [2020-11-07 05:09:24,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:24,894 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-11-07 05:09:24,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-07 05:09:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-11-07 05:09:24,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-11-07 05:09:24,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:24,895 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:09:24,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-07 05:09:24,895 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:24,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash -566914179, now seen corresponding path program 19 times [2020-11-07 05:09:24,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:24,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917603997] [2020-11-07 05:09:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:25,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:26,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:26,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:26,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:26,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:27,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-11-07 05:09:27,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917603997] [2020-11-07 05:09:27,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:27,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-11-07 05:09:27,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316422596] [2020-11-07 05:09:27,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-07 05:09:27,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:27,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-07 05:09:27,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2020-11-07 05:09:27,285 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 44 states. [2020-11-07 05:09:35,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:35,179 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2020-11-07 05:09:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-11-07 05:09:35,179 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 158 [2020-11-07 05:09:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:35,183 INFO L225 Difference]: With dead ends: 113 [2020-11-07 05:09:35,183 INFO L226 Difference]: Without dead ends: 107 [2020-11-07 05:09:35,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=389, Invalid=10531, Unknown=0, NotChecked=0, Total=10920 [2020-11-07 05:09:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-07 05:09:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-11-07 05:09:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-07 05:09:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2020-11-07 05:09:35,201 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 158 [2020-11-07 05:09:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:35,202 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2020-11-07 05:09:35,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-07 05:09:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2020-11-07 05:09:35,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-11-07 05:09:35,203 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:35,204 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:09:35,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-07 05:09:35,204 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:35,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:35,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1423510653, now seen corresponding path program 20 times [2020-11-07 05:09:35,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:35,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250702387] [2020-11-07 05:09:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:35,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:35,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:35,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:35,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:35,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:35,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:35,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:35,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:35,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:36,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:36,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:36,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:36,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:36,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:36,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:37,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:37,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:37,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:37,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-07 05:09:37,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250702387] [2020-11-07 05:09:37,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:37,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-11-07 05:09:37,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763155626] [2020-11-07 05:09:37,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-07 05:09:37,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:37,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-07 05:09:37,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2020-11-07 05:09:37,924 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 46 states. [2020-11-07 05:09:46,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:46,674 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2020-11-07 05:09:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-07 05:09:46,675 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 165 [2020-11-07 05:09:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:46,677 INFO L225 Difference]: With dead ends: 117 [2020-11-07 05:09:46,678 INFO L226 Difference]: Without dead ends: 111 [2020-11-07 05:09:46,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=408, Invalid=11582, Unknown=0, NotChecked=0, Total=11990 [2020-11-07 05:09:46,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-07 05:09:46,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-11-07 05:09:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-07 05:09:46,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-11-07 05:09:46,694 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 165 [2020-11-07 05:09:46,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:46,694 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-11-07 05:09:46,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-07 05:09:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-11-07 05:09:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-07 05:09:46,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:46,696 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 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, 1] [2020-11-07 05:09:46,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-07 05:09:46,696 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:46,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:46,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1276059065, now seen corresponding path program 21 times [2020-11-07 05:09:46,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:46,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707760226] [2020-11-07 05:09:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:46,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:46,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:46,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:47,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:47,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:47,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:47,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:47,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:47,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:47,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:47,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:48,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:48,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:48,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:48,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:48,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-11-07 05:09:49,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707760226] [2020-11-07 05:09:49,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:49,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-11-07 05:09:49,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914160691] [2020-11-07 05:09:49,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-07 05:09:49,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:49,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-07 05:09:49,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2020-11-07 05:09:49,607 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 48 states. [2020-11-07 05:09:59,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:59,104 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2020-11-07 05:09:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-11-07 05:09:59,108 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 172 [2020-11-07 05:09:59,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:59,110 INFO L225 Difference]: With dead ends: 121 [2020-11-07 05:09:59,110 INFO L226 Difference]: Without dead ends: 115 [2020-11-07 05:09:59,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2189 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=427, Invalid=12683, Unknown=0, NotChecked=0, Total=13110 [2020-11-07 05:09:59,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-07 05:09:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-11-07 05:09:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-07 05:09:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-11-07 05:09:59,138 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 172 [2020-11-07 05:09:59,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:59,138 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-11-07 05:09:59,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-07 05:09:59,139 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-11-07 05:09:59,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-11-07 05:09:59,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:59,140 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:09:59,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-07 05:09:59,140 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:59,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:59,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2103849209, now seen corresponding path program 22 times [2020-11-07 05:09:59,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:59,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102579519] [2020-11-07 05:09:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:59,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:59,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:59,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:59,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:00,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:00,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:00,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:00,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:00,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:00,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:00,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:01,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:01,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-11-07 05:10:02,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102579519] [2020-11-07 05:10:02,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:10:02,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-11-07 05:10:02,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416634959] [2020-11-07 05:10:02,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-07 05:10:02,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:02,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-07 05:10:02,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2020-11-07 05:10:02,346 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 50 states. [2020-11-07 05:10:12,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:12,633 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2020-11-07 05:10:12,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-11-07 05:10:12,634 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 179 [2020-11-07 05:10:12,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:12,636 INFO L225 Difference]: With dead ends: 125 [2020-11-07 05:10:12,636 INFO L226 Difference]: Without dead ends: 119 [2020-11-07 05:10:12,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=446, Invalid=13834, Unknown=0, NotChecked=0, Total=14280 [2020-11-07 05:10:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-07 05:10:12,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-11-07 05:10:12,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-07 05:10:12,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2020-11-07 05:10:12,652 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 179 [2020-11-07 05:10:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:12,653 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2020-11-07 05:10:12,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-07 05:10:12,653 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2020-11-07 05:10:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-11-07 05:10:12,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:12,655 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:12,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-07 05:10:12,655 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:12,655 INFO L82 PathProgramCache]: Analyzing trace with hash 717754129, now seen corresponding path program 23 times [2020-11-07 05:10:12,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:12,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747239374] [2020-11-07 05:10:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:12,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:12,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:10:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:12,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:14,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:14,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:14,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:14,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:14,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:15,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:15,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:15,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-11-07 05:10:16,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747239374] [2020-11-07 05:10:16,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:10:16,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-11-07 05:10:16,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137043861] [2020-11-07 05:10:16,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-07 05:10:16,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:16,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-07 05:10:16,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 05:10:16,144 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 52 states. [2020-11-07 05:10:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:27,320 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2020-11-07 05:10:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-11-07 05:10:27,321 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 186 [2020-11-07 05:10:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:27,323 INFO L225 Difference]: With dead ends: 129 [2020-11-07 05:10:27,323 INFO L226 Difference]: Without dead ends: 123 [2020-11-07 05:10:27,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2604 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=465, Invalid=15035, Unknown=0, NotChecked=0, Total=15500 [2020-11-07 05:10:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-07 05:10:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-11-07 05:10:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-07 05:10:27,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2020-11-07 05:10:27,341 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 186 [2020-11-07 05:10:27,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:27,342 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2020-11-07 05:10:27,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-07 05:10:27,342 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2020-11-07 05:10:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-11-07 05:10:27,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:27,343 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:27,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-07 05:10:27,344 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:27,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:27,344 INFO L82 PathProgramCache]: Analyzing trace with hash -764338287, now seen corresponding path program 24 times [2020-11-07 05:10:27,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:27,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185814983] [2020-11-07 05:10:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:10:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:30,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:30,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:30,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-11-07 05:10:31,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185814983] [2020-11-07 05:10:31,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:10:31,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-11-07 05:10:31,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126546942] [2020-11-07 05:10:31,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-07 05:10:31,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:31,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-07 05:10:31,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 05:10:31,150 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 54 states. [2020-11-07 05:10:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:43,271 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2020-11-07 05:10:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-11-07 05:10:43,272 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 193 [2020-11-07 05:10:43,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:43,275 INFO L225 Difference]: With dead ends: 133 [2020-11-07 05:10:43,275 INFO L226 Difference]: Without dead ends: 127 [2020-11-07 05:10:43,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=484, Invalid=16286, Unknown=0, NotChecked=0, Total=16770 [2020-11-07 05:10:43,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-07 05:10:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-11-07 05:10:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-07 05:10:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-11-07 05:10:43,292 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 193 [2020-11-07 05:10:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:43,293 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-11-07 05:10:43,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-07 05:10:43,293 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-11-07 05:10:43,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-07 05:10:43,294 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:43,295 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:43,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-07 05:10:43,295 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:43,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1134618149, now seen corresponding path program 25 times [2020-11-07 05:10:43,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:43,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454175850] [2020-11-07 05:10:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:10:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:47,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-11-07 05:10:47,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454175850] [2020-11-07 05:10:47,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:10:47,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-11-07 05:10:47,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608559379] [2020-11-07 05:10:47,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-11-07 05:10:47,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:47,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-11-07 05:10:47,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2020-11-07 05:10:47,467 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 56 states. [2020-11-07 05:11:00,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:11:00,537 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2020-11-07 05:11:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-11-07 05:11:00,538 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 200 [2020-11-07 05:11:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:11:00,540 INFO L225 Difference]: With dead ends: 137 [2020-11-07 05:11:00,540 INFO L226 Difference]: Without dead ends: 131 [2020-11-07 05:11:00,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3055 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=503, Invalid=17587, Unknown=0, NotChecked=0, Total=18090 [2020-11-07 05:11:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-07 05:11:00,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-11-07 05:11:00,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-07 05:11:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-11-07 05:11:00,559 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 200 [2020-11-07 05:11:00,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:11:00,560 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-11-07 05:11:00,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-11-07 05:11:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-11-07 05:11:00,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-11-07 05:11:00,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:11:00,561 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:11:00,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-07 05:11:00,562 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:11:00,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:11:00,562 INFO L82 PathProgramCache]: Analyzing trace with hash 89062939, now seen corresponding path program 26 times [2020-11-07 05:11:00,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:11:00,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058463443] [2020-11-07 05:11:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:11:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:11:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:11:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:04,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:04,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-11-07 05:11:04,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058463443] [2020-11-07 05:11:04,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:11:04,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-11-07 05:11:04,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912564589] [2020-11-07 05:11:04,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-11-07 05:11:04,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:11:04,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-11-07 05:11:04,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2020-11-07 05:11:04,997 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 58 states. [2020-11-07 05:11:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:11:19,204 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2020-11-07 05:11:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-11-07 05:11:19,206 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 207 [2020-11-07 05:11:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:11:19,207 INFO L225 Difference]: With dead ends: 141 [2020-11-07 05:11:19,207 INFO L226 Difference]: Without dead ends: 135 [2020-11-07 05:11:19,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3294 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=522, Invalid=18938, Unknown=0, NotChecked=0, Total=19460 [2020-11-07 05:11:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-07 05:11:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-11-07 05:11:19,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-07 05:11:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2020-11-07 05:11:19,227 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 207 [2020-11-07 05:11:19,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:11:19,227 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2020-11-07 05:11:19,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-11-07 05:11:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2020-11-07 05:11:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-11-07 05:11:19,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:11:19,229 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:11:19,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-07 05:11:19,229 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:11:19,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:11:19,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1428553051, now seen corresponding path program 27 times [2020-11-07 05:11:19,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:11:19,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412607324] [2020-11-07 05:11:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:11:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:11:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:11:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:22,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:22,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:22,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:22,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:23,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:23,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-11-07 05:11:24,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412607324] [2020-11-07 05:11:24,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:11:24,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-11-07 05:11:24,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175648926] [2020-11-07 05:11:24,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-07 05:11:24,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:11:24,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-07 05:11:24,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 05:11:24,020 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 60 states. [2020-11-07 05:11:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:11:39,307 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2020-11-07 05:11:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-11-07 05:11:39,308 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 214 [2020-11-07 05:11:39,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:11:39,311 INFO L225 Difference]: With dead ends: 145 [2020-11-07 05:11:39,311 INFO L226 Difference]: Without dead ends: 139 [2020-11-07 05:11:39,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3542 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=541, Invalid=20339, Unknown=0, NotChecked=0, Total=20880 [2020-11-07 05:11:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-07 05:11:39,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-11-07 05:11:39,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-07 05:11:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2020-11-07 05:11:39,332 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 214 [2020-11-07 05:11:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:11:39,332 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2020-11-07 05:11:39,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-07 05:11:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2020-11-07 05:11:39,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-11-07 05:11:39,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:11:39,335 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:11:39,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-07 05:11:39,335 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:11:39,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:11:39,336 INFO L82 PathProgramCache]: Analyzing trace with hash 799238821, now seen corresponding path program 28 times [2020-11-07 05:11:39,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:11:39,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118372429] [2020-11-07 05:11:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:11:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:11:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:11:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:42,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:42,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:42,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:42,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:43,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:43,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:43,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:43,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:43,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:44,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-11-07 05:11:44,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118372429] [2020-11-07 05:11:44,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:11:44,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-11-07 05:11:44,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887219751] [2020-11-07 05:11:44,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-11-07 05:11:44,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:11:44,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-11-07 05:11:44,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2020-11-07 05:11:44,701 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 62 states. [2020-11-07 05:12:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:12:01,141 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2020-11-07 05:12:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-11-07 05:12:01,142 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 221 [2020-11-07 05:12:01,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:12:01,145 INFO L225 Difference]: With dead ends: 149 [2020-11-07 05:12:01,145 INFO L226 Difference]: Without dead ends: 143 [2020-11-07 05:12:01,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3799 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=560, Invalid=21790, Unknown=0, NotChecked=0, Total=22350 [2020-11-07 05:12:01,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-07 05:12:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-11-07 05:12:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-07 05:12:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2020-11-07 05:12:01,162 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 221 [2020-11-07 05:12:01,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:12:01,162 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2020-11-07 05:12:01,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-11-07 05:12:01,162 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2020-11-07 05:12:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-11-07 05:12:01,164 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:12:01,164 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:12:01,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-07 05:12:01,164 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:12:01,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:12:01,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1596143249, now seen corresponding path program 29 times [2020-11-07 05:12:01,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:12:01,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942584368] [2020-11-07 05:12:01,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:12:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:12:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:12:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:01,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:01,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:05,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:05,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-11-07 05:12:06,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942584368] [2020-11-07 05:12:06,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:12:06,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-11-07 05:12:06,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851385327] [2020-11-07 05:12:06,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-07 05:12:06,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:12:06,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-07 05:12:06,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2020-11-07 05:12:06,859 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 64 states. [2020-11-07 05:12:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:12:24,309 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2020-11-07 05:12:24,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-11-07 05:12:24,310 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 228 [2020-11-07 05:12:24,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:12:24,313 INFO L225 Difference]: With dead ends: 153 [2020-11-07 05:12:24,313 INFO L226 Difference]: Without dead ends: 147 [2020-11-07 05:12:24,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4065 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=579, Invalid=23291, Unknown=0, NotChecked=0, Total=23870 [2020-11-07 05:12:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-11-07 05:12:24,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-11-07 05:12:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-07 05:12:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2020-11-07 05:12:24,333 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 228 [2020-11-07 05:12:24,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:12:24,333 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2020-11-07 05:12:24,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-11-07 05:12:24,333 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2020-11-07 05:12:24,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-11-07 05:12:24,335 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:12:24,335 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:12:24,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-07 05:12:24,335 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:12:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:12:24,336 INFO L82 PathProgramCache]: Analyzing trace with hash 425616687, now seen corresponding path program 30 times [2020-11-07 05:12:24,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:12:24,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538376909] [2020-11-07 05:12:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:12:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:24,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:12:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:24,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:12:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:24,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:24,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:24,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:25,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:25,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:25,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:25,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:26,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:26,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:26,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:26,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:29,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:29,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-11-07 05:12:30,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538376909] [2020-11-07 05:12:30,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:12:30,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-11-07 05:12:30,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6369108] [2020-11-07 05:12:30,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-11-07 05:12:30,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:12:30,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-11-07 05:12:30,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2020-11-07 05:12:30,416 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 66 states. [2020-11-07 05:12:49,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:12:49,421 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2020-11-07 05:12:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-11-07 05:12:49,422 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 235 [2020-11-07 05:12:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:12:49,425 INFO L225 Difference]: With dead ends: 157 [2020-11-07 05:12:49,425 INFO L226 Difference]: Without dead ends: 151 [2020-11-07 05:12:49,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=598, Invalid=24842, Unknown=0, NotChecked=0, Total=25440 [2020-11-07 05:12:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-07 05:12:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-11-07 05:12:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-11-07 05:12:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-11-07 05:12:49,455 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 235 [2020-11-07 05:12:49,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:12:49,456 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-11-07 05:12:49,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-11-07 05:12:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-11-07 05:12:49,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-11-07 05:12:49,458 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:12:49,459 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:12:49,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-07 05:12:49,459 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:12:49,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:12:49,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1368092217, now seen corresponding path program 31 times [2020-11-07 05:12:49,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:12:49,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780706728] [2020-11-07 05:12:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:12:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:12:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:49,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:12:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:49,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:50,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:50,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:50,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:50,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:50,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:50,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:51,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:51,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:54,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:54,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:54,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:55,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-11-07 05:12:56,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780706728] [2020-11-07 05:12:56,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:12:56,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-11-07 05:12:56,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732053443] [2020-11-07 05:12:56,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-11-07 05:12:56,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:12:56,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-11-07 05:12:56,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2020-11-07 05:12:56,042 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 68 states. [2020-11-07 05:13:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:13:16,096 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2020-11-07 05:13:16,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-11-07 05:13:16,098 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 242 [2020-11-07 05:13:16,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:13:16,100 INFO L225 Difference]: With dead ends: 161 [2020-11-07 05:13:16,100 INFO L226 Difference]: Without dead ends: 155 [2020-11-07 05:13:16,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=617, Invalid=26443, Unknown=0, NotChecked=0, Total=27060 [2020-11-07 05:13:16,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-07 05:13:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-11-07 05:13:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-11-07 05:13:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2020-11-07 05:13:16,121 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 242 [2020-11-07 05:13:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:13:16,121 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2020-11-07 05:13:16,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-11-07 05:13:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2020-11-07 05:13:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-11-07 05:13:16,122 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:13:16,123 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:13:16,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-07 05:13:16,123 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:13:16,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:13:16,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1645220423, now seen corresponding path program 32 times [2020-11-07 05:13:16,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:13:16,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322815794] [2020-11-07 05:13:16,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:13:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:16,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:13:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:13:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:16,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:16,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:17,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:17,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:17,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:17,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:17,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:17,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:18,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:18,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:18,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:18,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:19,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:19,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:19,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:20,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:20,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:20,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-11-07 05:13:23,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322815794] [2020-11-07 05:13:23,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:13:23,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-11-07 05:13:23,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288314292] [2020-11-07 05:13:23,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-11-07 05:13:23,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:13:23,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-11-07 05:13:23,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 05:13:23,352 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 70 states. [2020-11-07 05:13:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:13:45,328 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2020-11-07 05:13:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-11-07 05:13:45,330 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 249 [2020-11-07 05:13:45,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:13:45,332 INFO L225 Difference]: With dead ends: 165 [2020-11-07 05:13:45,332 INFO L226 Difference]: Without dead ends: 159 [2020-11-07 05:13:45,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4917 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=636, Invalid=28094, Unknown=0, NotChecked=0, Total=28730 [2020-11-07 05:13:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-07 05:13:45,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-11-07 05:13:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-11-07 05:13:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2020-11-07 05:13:45,359 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 249 [2020-11-07 05:13:45,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:13:45,360 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2020-11-07 05:13:45,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-11-07 05:13:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2020-11-07 05:13:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-11-07 05:13:45,362 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:13:45,362 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:13:45,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-07 05:13:45,362 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:13:45,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:13:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash 411693315, now seen corresponding path program 33 times [2020-11-07 05:13:45,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:13:45,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055918944] [2020-11-07 05:13:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:13:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:45,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:13:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:13:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:45,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:45,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:46,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:46,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:46,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:46,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:47,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:47,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:47,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:47,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:48,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:49,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:49,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:49,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:49,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:51,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-11-07 05:13:52,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055918944] [2020-11-07 05:13:52,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:13:52,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-11-07 05:13:52,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68399372] [2020-11-07 05:13:52,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-11-07 05:13:52,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:13:52,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-11-07 05:13:52,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2020-11-07 05:13:52,795 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 72 states. [2020-11-07 05:14:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:14:15,982 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2020-11-07 05:14:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-11-07 05:14:15,983 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 256 [2020-11-07 05:14:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:14:15,986 INFO L225 Difference]: With dead ends: 169 [2020-11-07 05:14:15,986 INFO L226 Difference]: Without dead ends: 163 [2020-11-07 05:14:15,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5219 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=655, Invalid=29795, Unknown=0, NotChecked=0, Total=30450 [2020-11-07 05:14:15,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-07 05:14:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-07 05:14:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-07 05:14:16,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2020-11-07 05:14:16,007 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 256 [2020-11-07 05:14:16,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:14:16,007 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2020-11-07 05:14:16,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-11-07 05:14:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2020-11-07 05:14:16,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-11-07 05:14:16,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:14:16,010 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:14:16,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-07 05:14:16,010 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:14:16,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:14:16,010 INFO L82 PathProgramCache]: Analyzing trace with hash 206046275, now seen corresponding path program 34 times [2020-11-07 05:14:16,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:14:16,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765553109] [2020-11-07 05:14:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:14:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:16,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:14:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:16,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:14:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:16,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:16,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:16,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:17,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:17,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:17,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:17,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:18,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:18,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:19,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:19,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:19,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:19,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:20,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:20,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:21,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:21,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:23,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-11-07 05:14:24,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765553109] [2020-11-07 05:14:24,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:14:24,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-11-07 05:14:24,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247162517] [2020-11-07 05:14:24,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-11-07 05:14:24,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:14:24,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-11-07 05:14:24,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2020-11-07 05:14:24,509 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 74 states. [2020-11-07 05:14:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:14:49,555 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2020-11-07 05:14:49,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-11-07 05:14:49,556 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 263 [2020-11-07 05:14:49,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:14:49,559 INFO L225 Difference]: With dead ends: 173 [2020-11-07 05:14:49,559 INFO L226 Difference]: Without dead ends: 167 [2020-11-07 05:14:49,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5530 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=674, Invalid=31546, Unknown=0, NotChecked=0, Total=32220 [2020-11-07 05:14:49,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-07 05:14:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-11-07 05:14:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-07 05:14:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2020-11-07 05:14:49,580 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 263 [2020-11-07 05:14:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:14:49,581 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2020-11-07 05:14:49,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-11-07 05:14:49,581 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2020-11-07 05:14:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-11-07 05:14:49,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:14:49,583 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:14:49,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-07 05:14:49,583 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:14:49,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:14:49,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1711517235, now seen corresponding path program 35 times [2020-11-07 05:14:49,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:14:49,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154111407] [2020-11-07 05:14:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:14:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:14:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:49,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:14:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:50,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:50,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:50,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:50,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:51,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:51,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:51,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:52,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:52,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:52,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:52,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:53,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:53,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:53,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:54,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:54,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:54,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:55,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:55,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:55,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:56,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:56,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:56,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:56,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:57,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-11-07 05:14:58,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154111407] [2020-11-07 05:14:58,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:14:58,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-11-07 05:14:58,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913740565] [2020-11-07 05:14:58,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-07 05:14:58,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:14:58,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-07 05:14:58,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2020-11-07 05:14:58,650 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 76 states. [2020-11-07 05:15:25,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:25,480 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2020-11-07 05:15:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2020-11-07 05:15:25,481 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 270 [2020-11-07 05:15:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:25,483 INFO L225 Difference]: With dead ends: 177 [2020-11-07 05:15:25,484 INFO L226 Difference]: Without dead ends: 171 [2020-11-07 05:15:25,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5850 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=693, Invalid=33347, Unknown=0, NotChecked=0, Total=34040 [2020-11-07 05:15:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-07 05:15:25,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-11-07 05:15:25,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-07 05:15:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-11-07 05:15:25,507 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 270 [2020-11-07 05:15:25,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:25,507 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-11-07 05:15:25,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-07 05:15:25,507 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-11-07 05:15:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-11-07 05:15:25,509 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:25,509 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:15:25,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-07 05:15:25,510 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:25,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:25,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2032752435, now seen corresponding path program 36 times [2020-11-07 05:15:25,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:25,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125984545] [2020-11-07 05:15:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:15:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:26,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:26,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:26,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:27,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:27,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:27,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:28,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:28,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:28,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:29,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:29,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:30,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:30,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:30,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:31,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:31,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:31,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:31,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:32,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:32,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:32,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:33,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:33,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-11-07 05:15:35,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125984545] [2020-11-07 05:15:35,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:15:35,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-11-07 05:15:35,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795154557] [2020-11-07 05:15:35,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-11-07 05:15:35,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:35,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-11-07 05:15:35,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2020-11-07 05:15:35,577 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 78 states. [2020-11-07 05:16:04,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:04,229 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2020-11-07 05:16:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-11-07 05:16:04,230 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 277 [2020-11-07 05:16:04,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:04,232 INFO L225 Difference]: With dead ends: 181 [2020-11-07 05:16:04,232 INFO L226 Difference]: Without dead ends: 175 [2020-11-07 05:16:04,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6179 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=712, Invalid=35198, Unknown=0, NotChecked=0, Total=35910 [2020-11-07 05:16:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-07 05:16:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-11-07 05:16:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-11-07 05:16:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2020-11-07 05:16:04,256 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 277 [2020-11-07 05:16:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:04,256 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2020-11-07 05:16:04,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-11-07 05:16:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2020-11-07 05:16:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-11-07 05:16:04,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:04,259 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:16:04,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-07 05:16:04,259 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:04,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1652986007, now seen corresponding path program 37 times [2020-11-07 05:16:04,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:04,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171563858] [2020-11-07 05:16:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:04,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:04,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:16:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:04,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:05,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:05,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:05,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:05,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:05,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:06,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:06,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:07,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:07,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:07,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:07,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:08,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:08,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:08,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:09,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:10,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:10,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:11,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:11,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:11,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:12,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:13,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:13,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:13,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-11-07 05:16:15,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171563858] [2020-11-07 05:16:15,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:16:15,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-11-07 05:16:15,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271785378] [2020-11-07 05:16:15,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-11-07 05:16:15,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:15,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-11-07 05:16:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 05:16:15,061 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 80 states. [2020-11-07 05:16:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:44,802 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2020-11-07 05:16:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2020-11-07 05:16:44,803 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 284 [2020-11-07 05:16:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:44,805 INFO L225 Difference]: With dead ends: 185 [2020-11-07 05:16:44,805 INFO L226 Difference]: Without dead ends: 179 [2020-11-07 05:16:44,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6517 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=731, Invalid=37099, Unknown=0, NotChecked=0, Total=37830 [2020-11-07 05:16:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-07 05:16:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-11-07 05:16:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-07 05:16:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2020-11-07 05:16:44,832 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 284 [2020-11-07 05:16:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:44,832 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2020-11-07 05:16:44,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-11-07 05:16:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2020-11-07 05:16:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-11-07 05:16:44,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:44,835 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:16:44,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-07 05:16:44,835 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:44,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:44,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1670110039, now seen corresponding path program 38 times [2020-11-07 05:16:44,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:44,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181541188] [2020-11-07 05:16:44,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:45,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:16:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:45,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:45,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:45,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:45,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:46,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:46,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:46,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:47,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:47,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:47,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:47,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:47,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:48,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:48,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:48,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:49,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:49,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:49,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:49,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:50,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:50,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:52,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:52,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:53,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-11-07 05:16:55,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181541188] [2020-11-07 05:16:55,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:16:55,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-11-07 05:16:55,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699601069] [2020-11-07 05:16:55,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-11-07 05:16:55,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:55,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-11-07 05:16:55,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2020-11-07 05:16:55,745 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 82 states. [2020-11-07 05:17:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:17:26,354 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2020-11-07 05:17:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-11-07 05:17:26,355 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 291 [2020-11-07 05:17:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:17:26,356 INFO L225 Difference]: With dead ends: 189 [2020-11-07 05:17:26,356 INFO L226 Difference]: Without dead ends: 183 [2020-11-07 05:17:26,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6864 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=750, Invalid=39050, Unknown=0, NotChecked=0, Total=39800 [2020-11-07 05:17:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-07 05:17:26,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-11-07 05:17:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-11-07 05:17:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2020-11-07 05:17:26,380 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 291 [2020-11-07 05:17:26,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:17:26,380 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2020-11-07 05:17:26,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-11-07 05:17:26,381 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2020-11-07 05:17:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-11-07 05:17:26,382 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:17:26,383 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:17:26,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-07 05:17:26,383 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:17:26,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:17:26,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2025018015, now seen corresponding path program 39 times [2020-11-07 05:17:26,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:17:26,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761034649] [2020-11-07 05:17:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:17:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:26,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:17:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:26,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:17:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:26,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:26,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:27,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:27,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:27,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:27,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:28,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:28,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:28,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:29,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:30,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:31,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:31,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:32,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:32,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:32,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:33,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:33,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:34,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:34,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:34,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:35,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:35,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:36,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:36,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-11-07 05:17:38,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761034649] [2020-11-07 05:17:38,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:17:38,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-11-07 05:17:38,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406544496] [2020-11-07 05:17:38,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-11-07 05:17:38,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:17:38,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-11-07 05:17:38,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2020-11-07 05:17:38,377 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 84 states. [2020-11-07 05:18:11,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:18:11,114 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2020-11-07 05:18:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2020-11-07 05:18:11,116 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 298 [2020-11-07 05:18:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:18:11,118 INFO L225 Difference]: With dead ends: 193 [2020-11-07 05:18:11,118 INFO L226 Difference]: Without dead ends: 187 [2020-11-07 05:18:11,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7220 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=769, Invalid=41051, Unknown=0, NotChecked=0, Total=41820 [2020-11-07 05:18:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-07 05:18:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-11-07 05:18:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-07 05:18:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2020-11-07 05:18:11,141 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 298 [2020-11-07 05:18:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:18:11,141 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2020-11-07 05:18:11,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-11-07 05:18:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2020-11-07 05:18:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-11-07 05:18:11,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:18:11,144 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:18:11,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-07 05:18:11,144 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:18:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:18:11,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1948804127, now seen corresponding path program 40 times [2020-11-07 05:18:11,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:18:11,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9176248] [2020-11-07 05:18:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:18:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:11,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:18:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:18:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:11,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:11,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:11,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:12,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:12,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:12,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:12,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:12,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:13,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:13,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:14,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:14,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:14,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:15,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:15,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:16,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:16,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:16,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:16,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:17,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:17,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:17,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:18,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:19,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:19,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:19,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:20,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:20,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:21,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:22,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-11-07 05:18:23,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9176248] [2020-11-07 05:18:23,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:18:23,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-11-07 05:18:23,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25643204] [2020-11-07 05:18:23,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-11-07 05:18:23,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:18:23,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-11-07 05:18:23,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2020-11-07 05:18:23,728 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 86 states. [2020-11-07 05:18:58,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:18:58,690 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2020-11-07 05:18:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-11-07 05:18:58,691 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 305 [2020-11-07 05:18:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:18:58,693 INFO L225 Difference]: With dead ends: 197 [2020-11-07 05:18:58,693 INFO L226 Difference]: Without dead ends: 191 [2020-11-07 05:18:58,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7585 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=788, Invalid=43102, Unknown=0, NotChecked=0, Total=43890 [2020-11-07 05:18:58,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-07 05:18:58,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2020-11-07 05:18:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-11-07 05:18:58,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2020-11-07 05:18:58,718 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 305 [2020-11-07 05:18:58,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:18:58,718 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2020-11-07 05:18:58,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-11-07 05:18:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2020-11-07 05:18:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-11-07 05:18:58,720 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:18:58,721 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:18:58,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-07 05:18:58,721 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:18:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:18:58,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1173530667, now seen corresponding path program 41 times [2020-11-07 05:18:58,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:18:58,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074049456] [2020-11-07 05:18:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:18:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:18:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:18:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:59,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:59,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:59,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:00,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:00,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:01,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:01,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:01,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:01,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:01,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:02,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:02,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:02,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:03,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:03,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:04,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:04,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:05,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:06,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:07,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:07,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:08,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:08,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:09,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:09,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-11-07 05:19:12,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074049456] [2020-11-07 05:19:12,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:19:12,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-11-07 05:19:12,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35288193] [2020-11-07 05:19:12,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-11-07 05:19:12,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:19:12,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-11-07 05:19:12,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2020-11-07 05:19:12,172 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 88 states. [2020-11-07 05:19:50,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:19:50,045 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2020-11-07 05:19:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-11-07 05:19:50,047 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 312 [2020-11-07 05:19:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:19:50,054 INFO L225 Difference]: With dead ends: 201 [2020-11-07 05:19:50,055 INFO L226 Difference]: Without dead ends: 195 [2020-11-07 05:19:50,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7959 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=807, Invalid=45203, Unknown=0, NotChecked=0, Total=46010 [2020-11-07 05:19:50,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-11-07 05:19:50,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-11-07 05:19:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-11-07 05:19:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2020-11-07 05:19:50,081 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 312 [2020-11-07 05:19:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:19:50,082 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2020-11-07 05:19:50,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-11-07 05:19:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2020-11-07 05:19:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-11-07 05:19:50,084 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:19:50,084 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:19:50,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-11-07 05:19:50,084 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:19:50,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:19:50,085 INFO L82 PathProgramCache]: Analyzing trace with hash -592844181, now seen corresponding path program 42 times [2020-11-07 05:19:50,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:19:50,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888174464] [2020-11-07 05:19:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:19:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:50,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:19:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:50,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:19:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:51,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:51,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:51,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:51,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:52,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:52,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:52,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:53,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:53,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:53,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:53,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:54,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:54,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:55,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:55,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:55,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:55,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:56,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:56,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:57,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:59,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:00,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:00,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:01,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:01,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:02,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:03,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-11-07 05:20:04,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888174464] [2020-11-07 05:20:04,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:20:04,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-11-07 05:20:04,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160551562] [2020-11-07 05:20:04,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-11-07 05:20:04,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:04,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-11-07 05:20:04,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2020-11-07 05:20:04,980 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 90 states. [2020-11-07 05:20:46,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:46,817 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2020-11-07 05:20:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2020-11-07 05:20:46,819 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 319 [2020-11-07 05:20:46,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:46,820 INFO L225 Difference]: With dead ends: 205 [2020-11-07 05:20:46,820 INFO L226 Difference]: Without dead ends: 199 [2020-11-07 05:20:46,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8342 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=826, Invalid=47354, Unknown=0, NotChecked=0, Total=48180 [2020-11-07 05:20:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-11-07 05:20:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-11-07 05:20:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-11-07 05:20:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2020-11-07 05:20:46,843 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 319 [2020-11-07 05:20:46,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:46,844 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2020-11-07 05:20:46,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-11-07 05:20:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2020-11-07 05:20:46,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-11-07 05:20:46,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:46,847 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:20:46,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-11-07 05:20:46,847 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:46,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1533247243, now seen corresponding path program 43 times [2020-11-07 05:20:46,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:46,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247359695] [2020-11-07 05:20:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:47,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:20:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:47,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:48,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:48,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:49,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:49,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:49,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:50,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:50,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:52,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:52,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:53,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:53,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:53,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:54,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:54,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:54,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:55,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:55,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:56,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:57,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:58,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat